#linuxcnc | Logs for 2014-11-23

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[00:00:00] <zeeshan|2> jdh
[00:00:01] <zeeshan|2> how do you fix it?
[00:00:10] <zeeshan|2> do you need to sign up somewhere?
[00:00:16] <LeelooMinai> With sharpie on the screen
[00:03:07] <LeelooMinai> Hmm, I wonder which doc has those listed. I cannot see them in the manual PDF
[00:03:46] <LeelooMinai> Maybe the integrator manual
[00:05:01] <LeelooMinai> O, right, it's all there
[00:05:16] <LeelooMinai> I knew I was missing some docs
[00:05:46] <LeelooMinai> Has 2.5 in the title though
[00:08:47] <LeelooMinai> Maybe I should also change what is - and what is + on my table, as the spindle moves in the opposite direction - not sure what is the convention.
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[00:22:18] <zeeshan|2> yay
[00:22:25] <zeeshan|2> i spent 2 hours on this question im doing
[00:22:32] <zeeshan|2> just to draw a godddamn boob in the end??????
[00:22:45] <Tom_itx> coping saw
[00:23:01] <Tom_itx> woops ... readback buffer got me that time
[00:23:26] <LeelooMinai> coping saw is similar to scroll saw, just not powered
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[00:24:21] <zeeshan|2> NSFW
[00:24:22] <zeeshan|2> https://www.flickr.com/photos/128539016@N05/15853107031/
[00:24:29] <zeeshan|2> jk :)
[00:25:22] <LeelooMinai> If you work at WOlfram, it is NSFW:)
[00:25:28] <zeeshan|2> haha
[00:25:35] <zeeshan|2> im still laughing about this
[00:25:37] <zeeshan|2> i know im silly
[00:25:46] <zeeshan|2> but ive seriously been solving this partial differential equation for the last 2hours
[00:25:48] <zeeshan|2> and i go to plot it
[00:25:50] <zeeshan|2> and its a hump
[00:25:52] <zeeshan|2> ..
[00:26:05] <zeeshan|2> that is apparently what a flat plate looks like
[00:26:13] <zeeshan|2> when you distribute a triangular load on it
[00:26:45] <zeeshan|2> simply supported
[00:32:07] <LeelooMinai> "hit limit in home state 7" <- i wish it was written in english:)
[00:32:25] <LeelooMinai> instead of "state 7" that is
[00:34:54] <LeelooMinai> I think I need HOME_INGORE_LIMITS = YES
[00:35:25] <jdh> do you have shared home/limit?
[00:35:38] <LeelooMinai> Yes, I just have 2 limit switches per axis
[00:36:08] <jdh> see 3.4
[00:36:27] <LeelooMinai> Maybe in the future I should add some non-mechanicl home switches in the middle of each axis
[00:36:44] <LeelooMinai> So it homes faster (?)
[00:36:46] <jdh> you could, but it wouldn't home any better
[00:37:00] <LeelooMinai> Well, it would not have to travel to the end and back
[00:37:12] <jdh> what if it was starting on the 'wrong' side
[00:37:48] <LeelooMinai> Hmm, then two switches would be needed to see the direction
[00:38:28] <LeelooMinai> Ok, no, that would not help:)
[00:38:59] <LeelooMinai> Well, some sensor solution then - I am sure it can be made faster
[00:39:14] <jdh> absolute encoders
[00:39:35] <LeelooMinai> They can attach to stepper acix?
[00:39:39] <LeelooMinai> axis*
[00:40:04] <jdh> they could attach to anything
[00:40:15] <LeelooMinai> I am not sure that 7i76 could handle 3 of those
[00:40:34] <jdh> how often are you planning on homing?
[00:41:09] <LeelooMinai> No idea - I guess when I power on the thing?
[00:41:38] <LeelooMinai> On the other hand - I think those encoders just send digital pulses.. at least non-absolute ones, so maybe 7i76 can handle them
[00:42:03] <LeelooMinai> And absolute ones, I don't know what they do, would have to look into that
[00:42:38] <LeelooMinai> I guess they could be a nifty addition
[00:44:35] <LeelooMinai> Kin d of expensive $26 for 1024/rev one
[00:45:14] <_methods> don't succumb to the feature creep lol
[00:45:22] <LeelooMinai> http://www.aliexpress.com/item/Encoder-TRD-NA1024NW-1024P-R-Koyo-encoder-absolute-encoder/1889679357.html
[00:45:55] <LeelooMinai> Right, well, yes, but it's good to know what options are there
[00:45:59] <jdh> I haven't gotten around to putting limits/home on my new router. Only X on my mill
[00:48:41] <_methods> i've been "picking" the parts for my plasma table for like 5 years now lol
[00:49:14] <LeelooMinai> An idea for april the 1st and your fellow machinist - remove limit switches from his/her .ini file
[00:49:58] <_methods> grind a 1/16" off the end of all their scales
[00:50:39] <LeelooMinai> Or redefine basic unit in linuxcnc to be 3.14mm:)
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[00:51:31] <LeelooMinai> ok, maybe this time it will work with IGNORE instead of INGORE
[00:51:51] amnesic is now known as amnesic_away
[00:52:06] <zeeshan|2> LeelooMinai: you make it sound like a big deal
[00:52:06] <zeeshan|2> lol
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[00:52:12] <zeeshan|2> homing takes like 20 seconds
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[00:53:51] <LeelooMinai> Could tak 4 though:)
[00:54:19] <LeelooMinai> Hmm, that ignore worked too well:/
[00:54:32] <LeelooMinai> It just slamed into the end
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[00:56:08] <LeelooMinai> zeeshan|2: I took your advice and pressed the limit manually. Too bad it did nothing:)
[00:57:54] <zeeshan|2> haha
[00:58:26] <LeelooMinai> I have HOME_SEARCH_VEL = 20.0 and HOME_LATCH_VEL = -3.0
[00:58:53] <LeelooMinai> I thought it will move up (z-axis) then trip the switch and move back until the switch releases and be done, no?
[00:59:25] <LeelooMinai> I also have HOME_USE_INDEX = NO
[00:59:28] <zeeshan|2> gimme a sec.
[00:59:31] <LeelooMinai> And ignore limits
[00:59:31] <zeeshan|2> ill check it out on the lathe
[00:59:41] <zeeshan|2> i have the same setup
[00:59:48] <zeeshan|2> where im using limit and home switch as one switch
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[01:01:10] <LeelooMinai> If I had "oh shit" button already installed I would manage to stop it
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[01:03:38] <zee-Lathe> wow
[01:03:42] <LeelooMinai> Maybe I have HOME_OFFSET wrong - it's 73 and should be -73 (?)
[01:03:43] <zee-Lathe> this computers fan sounds like it wants to die
[01:03:48] <zee-Lathe> cause of freezing!
[01:04:41] <zee-Lathe> http://pastebin.com/KZ7p63eX
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[01:06:44] <LeelooMinai> "HOME_OFFSET = 0.0 - The axis position of the home switch or index pulse, in machine units. When the home point is found
[01:06:44] <LeelooMinai> during the homing process, this is the position that is assigned to that point."
[01:07:00] <LeelooMinai> That's unclear to me I guess
[01:08:00] <LeelooMinai> In particular "when the home is found" - what constitutes finding it?
[01:08:23] <zeeshan|2> back
[01:08:25] <zeeshan|2> so much warmer here
[01:08:29] <zeeshan|2> i had to back up my drivers from that machine too
[01:08:35] <zeeshan|2> about to start writing modbus drivers up here :D
[01:09:17] <zeeshan|2> that home_offset command is important!
[01:09:21] <zeeshan|2> thats what caused my shit to crash
[01:09:33] <LeelooMinai> I do not really understand the wording there
[01:09:49] <zeeshan|2> okay lets start from scratch
[01:09:53] <zeeshan|2> on my pastebin..
[01:09:58] <zeeshan|2> the first 3 things with _VEL at the end
[01:10:01] <zeeshan|2> are the velocities..
[01:10:10] <zeeshan|2> search velocity is when its at a random position
[01:10:14] <zeeshan|2> it'll go towards the switch at that speed
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[01:10:19] <LeelooMinai> What pastebin?
[01:10:27] <zeeshan|2> http://pastebin.com/KZ7p63eX
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[01:10:32] <LeelooMinai> A, you have two nicks now
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[01:11:17] <zeeshan|2> latch velocity is after it hits the siwtch after the first time..
[01:11:32] <zeeshan|2> and retracts... it''ll approach the switch at a much slower velocity
[01:12:04] <LeelooMinai> I need to understand HOME and HOME_OFFSET better I think
[01:12:07] <zeeshan|2> final velocity is after it touches the switch the final time (or in this example, the second time when it approached slowly)
[01:12:21] <zeeshan|2> it'll retract at a much faster speed to home_offset position.
[01:12:48] <zeeshan|2> LeelooMinai: those 2 terms are annoying
[01:12:57] <zeeshan|2> home is when it hits the switch.
[01:13:09] <zeeshan|2> home_offset is the amount it retracts to
[01:13:10] <LeelooMinai> I thought home is where it goes at the end:)
[01:13:13] <zeeshan|2> from that switch
[01:13:27] <LeelooMinai> "HOME = 0.0 - The position that the joint will go to upon completion of the homing sequence."
[01:14:13] <LeelooMinai> The question is what is HOME_OFFSET ... is it where the homing switch is on the axis?
[01:14:30] <zeeshan|2> dude im trying to explain it to you
[01:14:44] <zeeshan|2> unless im confused myself!
[01:14:45] <LeelooMinai> Yes, but you are giving conflicting definitions:)
[01:14:58] <LeelooMinai> I mean conflicting with the integrator manual pdf.
[01:15:11] <LeelooMinai> I just quoted a bit from there
[01:15:36] <zeeshan|2> http://linuxcnc.org/docs/html/config/ini_homing.html#_home
[01:15:39] <zeeshan|2> if you go to this page
[01:15:43] <zeeshan|2> iwas following the second image
[01:15:52] <zeeshan|2> i followed that exactly.
[01:15:55] <zeeshan|2> i set home to 1.00
[01:15:58] <zeeshan|2> and homoffset to 3
[01:16:00] <LeelooMinai> I am following the first one
[01:16:01] <zeeshan|2> and it smashed my limit switch
[01:16:21] <zeeshan|2> i think 2nd one is more accurate
[01:16:25] <zeeshan|2> =P
[01:16:44] <LeelooMinai> Yes, but the first one is simpler, so I thought I should get it working first
[01:17:09] <zeeshan|2> just use my settings :-(
[01:17:25] <zeeshan|2> lines 4 to lines 10
[01:17:28] <zeeshan|2> and line 20 and 21
[01:17:29] <LeelooMinai> I cannot just copy stuff - I need to understand it
[01:17:39] <LeelooMinai> Man, those explanations could be much better then.
[01:17:40] <zeeshan|2> learn it the trial and error way :P
[01:17:51] <zeeshan|2> those explanations are no good in my opinion
[01:17:56] <LeelooMinai> there*
[01:18:10] <zeeshan|2> im sure the person who wrote them understood em well
[01:18:11] <LeelooMinai> They are good if meant to confuse people:)
[01:18:19] <zeeshan|2> but they are confusing.
[01:18:39] <zeeshan|2> all i can tell you is my understanding of it
[01:18:43] <zeeshan|2> home is where the switch trips
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[01:18:52] <zeeshan|2> and home offset is the distance you move away from the switch
[01:19:58] <LeelooMinai> That does not make sense when you look at the images there - the home is at 1.000 and it's not at the switch for sure
[01:20:04] <zeeshan|2> i know
[01:20:08] <zeeshan|2> the images are wrong.
[01:20:13] <zeeshan|2> at least in my case they were wrong
[01:20:22] * LeelooMinai scratches the head
[01:20:23] <zeeshan|2> cause i did 1 and 3 before like in image 2
[01:20:29] <zeeshan|2> and it crashed into the switch
[01:20:32] <zeeshan|2> but when i did 3 and 1
[01:20:35] <zeeshan|2> everything was ok
[01:21:04] <zeeshan|2> so i can only vouch for image 2
[01:21:05] <zeeshan|2> :P
[01:21:07] <LeelooMinai> Now I don't know what to belive... you, the integrator manual, the drawings there or what:)
[01:21:17] <zeeshan|2> its simple
[01:21:20] <zeeshan|2> copy my config
[01:21:24] <zeeshan|2> trip the switch by hand
[01:21:29] <zeeshan|2> and see if it does what youre telling it to do
[01:21:33] <zeeshan|2> (in terms of home and home offset)
[01:21:53] <zeeshan|2> all the other commands are self explanatory
[01:21:54] <LeelooMinai> I need to figure it out logically first
[01:22:03] <zeeshan|2> velocities set velocities.
[01:22:08] <zeeshan|2> ignore limits is explaned well
[01:22:14] <zeeshan|2> sequence 0 means this is the axis that homes first
[01:22:24] <zeeshan|2> home_is_shared = 0 means limit + home are same
[01:22:41] <zeeshan|2> only thing left is home and home_offset
[01:23:39] <LeelooMinai> yes, and I have 0 and 73 there
[01:24:03] <LeelooMinai> So after hitting the top switch I thought it would go down by 73 to 0
[01:26:27] <zeeshan|2> what happens?
[01:26:34] <zeeshan|2> it hits the switch and goes up again? :D
[01:26:36] <LeelooMinai> It kept foing up
[01:26:42] <LeelooMinai> going*
[01:26:48] <zeeshan|2> thats cause the manual is wrong :P
[01:26:55] <zeeshan|2> try flipping the numbers around
[01:27:00] <LeelooMinai> ...
[01:27:10] <zeeshan|2> set 73 to 0..
[01:27:12] <zeeshan|2> and 0 to 73
[01:27:24] <zeeshan|2> what units are 73? :P
[01:27:28] <LeelooMinai> mm
[01:27:38] <LeelooMinai> half the z travel
[01:27:44] <zeeshan|2> set it a bit smaller
[01:27:58] <zeeshan|2> like 25 mm
[01:28:10] <zeeshan|2> if it moves down by 25mm, you know you have it set right
[01:28:26] <LeelooMinai> How can the manual be wrong on such basic thing in such late version?
[01:28:34] <zeeshan|2> i personally didnt raise a stink about this
[01:28:41] <zeeshan|2> because i thought maybe it had something to do with it being on a lathe
[01:28:50] <zeeshan|2> and direction of axis
[01:29:04] <zeeshan|2> but since youre having the exact same prob, i am pretty sure manual has issue :P
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[01:29:39] <LeelooMinai> Hmm, I better google around
[01:29:46] <zeeshan|2> i dont get you?
[01:29:49] <zeeshan|2> why dont you just try it?
[01:29:53] <zeeshan|2> and see for yourself
[01:30:01] <LeelooMinai> zeeshan|2: Try what?
[01:30:08] <zeeshan|2> flipping the numbers around?
[01:30:28] <LeelooMinai> I am not trying anything until I read exactly what is going on:)
[01:30:35] <zeeshan|2> whatever the numbers are, home should be larger than the home_offset value
[01:30:36] <zeeshan|2> ok
[01:30:37] <zeeshan|2> have fun
[01:30:43] * zeeshan|2 wasted time for no reason
[01:31:12] <LeelooMinai> You gave me some reference
[01:31:18] <zeeshan|2> "lets look at the internet"
[01:31:31] <zeeshan|2> "rather than try something someone is already using on his machine"
[01:31:36] <zeeshan|2> _real_ good logic! :p
[01:31:51] <LeelooMinai> Well, I am "research first, do later" person I guess
[01:32:55] <Connor> I need to take a bit off the OD on the shafts of my ballscrews to get the bearings to fit.. I have access to the following. A hand drill, a Drill press.. and a 7x10 mini lathe. Screws too large to go through the chuck on the lathe...
[01:33:14] <Connor> I'm thinking maybe chuck them up in the drill press so they hang down... and use sand paper...
[01:33:32] <zeeshan|2> how much?
[01:33:39] <zeeshan|2> material removal
[01:33:45] <Connor> Need to figure out how to keep the longer ball screw from whipping..
[01:34:13] <Connor> Very little.. It's a press fit now.. but.. Needs to be a tad looser so I can get them on without using a press.
[01:34:53] <zeeshan|2> since there isnt much force involved
[01:34:59] <_methods> can you get it between centers?
[01:35:00] <zeeshan|2> instead of putting it through the bore of your mini lathe
[01:35:04] <zeeshan|2> chuck it up
[01:35:08] <zeeshan|2> and use steady rest
[01:35:10] <zeeshan|2> and sand away
[01:35:18] <Connor> Don't have a steady rest.
[01:35:36] <zeeshan|2> chuck it up
[01:35:38] <zeeshan|2> spin at 20 rpm
[01:35:39] <Connor> _methods: and no.. too long for 7x10 lathe.
[01:35:43] <_methods> ahh
[01:35:44] <zeeshan|2> let it stick that far hahaa
[01:35:45] <zeeshan|2> :D
[01:35:49] <zeeshan|2> youre only sanding it
[01:36:07] <Connor> that's why I was thinking of drill press.. chuck it up and let it hang down..
[01:36:18] <_methods> do you have a live center you can put under it in the drill press?
[01:36:26] <zeeshan|2> id trust your lathe chuck vs a drill press chuck
[01:36:38] <Connor> I do have a live center.
[01:36:39] <zeeshan|2> _methods thats a great idea
[01:36:39] <zeeshan|2> hahaha
[01:36:50] <Connor> but, it's pointed.. ball screws are flat.
[01:37:03] <_methods> well center drill it
[01:37:14] <zeeshan|2> hows he gonna center drill it
[01:37:23] <Connor> _methods: If I could center drill it.. I wouldn't need to use the drill press. :(
[01:37:30] <_methods> he'll have to clamp it in the drill press someohw
[01:37:36] <zeeshan|2> connor how slow can you spin your mini lathe?
[01:37:43] <_methods> put a vise on its side
[01:37:49] <_methods> mark center and center drill
[01:38:02] <_methods> make sure you center punch it first
[01:38:07] <zeeshan|2> connor just fyi
[01:38:08] <Connor> zeeshan|2: I dunno.. haven't checked.. pretty slow... maybe 100-150 RPM
[01:38:11] <zeeshan|2> i had the same problem
[01:38:16] <zeeshan|2> i used 1000 grit sand paper
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[01:38:30] <zeeshan|2> wrapped it around the shaft and sanded with even pressure
[01:38:35] <Connor> I think I have 600 which is the best I can get short notice.
[01:38:45] <zeeshan|2> it didnt need much
[01:38:56] <Connor> by hand.. or turning it in something ?
[01:39:00] <zeeshan|2> by hand
[01:39:04] <zeeshan|2> use your plams
[01:39:16] <zeeshan|2> so you get even pressure on it
[01:39:36] <zeeshan|2> i think with 20 rotations with a 600 grit paper
[01:39:46] <zeeshan|2> you'll remvoe 0.0007~
[01:39:47] <Connor> I hate not having the right tools.
[01:40:02] <_methods> yeah it sux
[01:40:11] <_methods> makes for some interesting setups though lol
[01:40:14] <zeeshan|2> i learned this from a person i look upto:
[01:40:38] <jdh> me?
[01:40:42] <zeeshan|2> "you can never have enough tools. make use of what you have. that is what makes the difference between an excellent machinist and good machinist"
[01:40:43] <pcw_home> home offset is the distance from the switch point to machine home
[01:40:49] <zeeshan|2> jdh lol
[01:41:02] <Connor> jdh: Is your bearing pocket on the Z ballscreew larger than the bearing ?
[01:41:13] <zeeshan|2> pcw_home: if you look at the manual
[01:41:22] <zeeshan|2> it says home = 1
[01:41:25] <zeeshan|2> home_offset = 3
[01:41:32] <Connor> jdh: Suppose to use 35mm bearing.. my pocket is like 36.3mm
[01:41:32] <zeeshan|2> that caused an instant crash on my machine
[01:41:42] <jdh> Connor: I think I had to add a shim to one of them
[01:41:43] <pcw_home> home is only the same as the switchpoint if homeoffset=0
[01:42:05] <zeeshan|2> i have it currently setup as home=3.2 and home_offset = 3.41945
[01:42:06] <Connor> No pocket for the bottom one.. just the top one..
[01:42:08] <zeeshan|2> whats going on there?
[01:42:20] <zeeshan|2> where is the switch actuation point?
[01:42:23] <Connor> and shims between them to make clearance so the inner race doesn't rub..
[01:42:49] <Connor> let me go try to sand these down a bit..
[01:42:53] <Connor> switching to ipad.
[01:43:00] <LeelooMinai> pcw_home: The integrator manual has this: "HOME_OFFSET = 0.0 - The axis position of the home switch or index pulse, in machine units. When the home point is found during the homing process, this is the position that is assigned to that point."
[01:43:13] <jdh> I meant a shim around the OD of the bearing
[01:43:28] <pcw_home> thats correct
[01:43:38] <LeelooMinai> pcw_home: It crashed my axis...
[01:43:57] <zeeshan|2> ownt
[01:43:58] <zeeshan|2> :D
[01:44:03] <LeelooMinai> pcw_home: TO me it means that this specifies the limit/home switch position on the axis
[01:44:19] <LeelooMinai> And I have it set to 73mm and nome to 0
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[01:44:43] <zeeshan|2> pcw_home: this config works for me:
[01:44:44] <zeeshan|2> http://pastebin.com/KZ7p63eX
[01:44:45] <LeelooMinai> So I would expect that after hitting the switch it would retract 73mm to position 0
[01:44:50] <LeelooMinai> DId not happen
[01:44:54] <zeeshan|2> could you explain at what position the home switch trips?
[01:45:50] <LeelooMinai> I picture this as ----HOME(0)-------SWITCH(73), where HOME_OFFSET = 73
[01:46:04] <LeelooMinai> And I read that like 10 times so far:)
[01:46:42] <pcw_home> on the final switch /index trip machine coordinates are set to home_offset
[01:47:18] <zeeshan|2> i understand that
[01:47:25] <LeelooMinai> Yes, in my case it's 73
[01:47:34] <zeeshan|2> i just dont understand when you set home=3.2 and home_offset = 3.419 it works
[01:47:46] <LeelooMinai> But then, since home = 0, why would it not stop and go the other direction?
[01:47:49] <zeeshan|2> but if you set home = 3.419 and home=3.2
[01:47:51] <zeeshan|2> it crashes
[01:47:58] <zeeshan|2> actually wait
[01:48:06] <zeeshan|2> what youre saying explains it
[01:48:06] <zeeshan|2> nm
[01:48:56] * zeeshan|2 doesnt know anymore :{
[01:49:40] <LeelooMinai> pcw_home: Here's my z-axis ini and it crashed for me: http://i.imgur.com/qUZsL5p.png
[01:50:35] <jdh> are you homing on your left/- limit switch?
[01:50:46] <zeeshan|2> me?
[01:50:50] <zeeshan|2> mine was right most switch
[01:50:51] <LeelooMinai> I imagined that this will happen: the axis will move up witch vel of 20, then it will hit switch and move down with velocity of -3, then this point will be 73 on the axis, and it will go to home at 0, so move down 73
[01:50:53] <zeeshan|2> so +z direction
[01:50:53] <jdh> if so, home_offset should be -73
[01:51:11] <LeelooMinai> I am homing on top z switch
[01:51:18] <jdh> still -
[01:51:44] <zeeshan|2> so in my case i could do
[01:51:45] <LeelooMinai> That makes no sense...
[01:51:52] <zeeshan|2> home = 0 and home_offset = -3.419?
[01:52:01] <zeeshan|2> hm.
[01:52:39] <LeelooMinai> I mean what I just described follows this exactly: http://i.imgur.com/XSmLh1g.png
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[01:53:36] <zeeshan|2> okay so that makes sense
[01:53:49] <zeeshan|2> so home_offset is the position of the limit switch.
[01:53:56] <LeelooMinai> zeeshan|2: You change your mind every minute:p
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[01:54:11] <zeeshan|2> and home is the position you're moving to after youre done homing
[01:54:20] <jdh> 20:46 < pcw_home> on the final switch /index trip machine coordinates are set to home_offset
[01:54:28] <LeelooMinai> That's what written there, but that's not what happened
[01:54:30] <jdh> [6~[6~[6~
[01:54:51] <zeeshan|2> well for me it makes sense
[01:54:59] <zeeshan|2> my limit switch is at x=3.419
[01:55:05] <_methods> if you're not sure move your limit switches off any hard limits and shrink your table size i software and experiment
[01:55:08] <zeeshan|2> so thats that position it stores in its head.
[01:55:13] <LeelooMinai> There's nothing about machine coordinates in the description of those values
[01:55:18] <zeeshan|2> and if i set it to home = 0
[01:55:31] <zeeshan|2> it'd go to the center line of the spindle
[01:55:42] <zeeshan|2> sweet
[01:56:02] <LeelooMinai> It just used a concept of "axis position"
[01:56:46] <LeelooMinai> So in my case I wanted the z axis to be -73 to 73 with home at 0 in the center
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[01:57:10] <LeelooMinai> And using positive switch for homing
[01:57:24] <zeeshan|2> http://i.imgur.com/qUZsL5p.png
[01:57:26] <zeeshan|2> for that
[01:57:35] <zeeshan|2> can you try setting latch vel to +3
[01:57:37] <zeeshan|2> and see what happens?
[01:58:18] <LeelooMinai> The pictures on the wiki have first case with search positive and latch negative
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[01:58:36] <zeeshan|2> ok ill try it on my own machine then! :P
[01:58:37] <zeeshan|2> brb
[01:58:40] <jdh> I don't think I've ever cared where 0 was
[01:58:50] <LeelooMinai> http://i.imgur.com/n7e9eyZ.png
[01:59:26] <LeelooMinai> So I followed that too
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[02:00:48] <Computer_Barf> Connor: you around?
[02:03:40] <zeeshan|2> sweet
[02:03:41] <zeeshan|2> it works!
[02:03:42] <zeeshan|2> it goes to 0
[02:04:06] <PetefromTn_> just watched the newest X men movie...
[02:04:13] <zeeshan|2> how was it?
[02:04:14] <PetefromTn_> it was awesome
[02:04:17] <zeeshan|2> :D
[02:04:21] <PetefromTn_> but I got a problem with it.
[02:04:32] <PetefromTn_> in the last movie
[02:04:33] <Computer_Barf> I bought a g0704 recently. I'm thinking of buying a kit from a guy to cnc it, but i had it occur to me that It might be possible to 3d print temporary mounts
[02:04:40] <zeeshan|2> x-men: days of future past?
[02:04:48] <Computer_Barf> and that perhaps the community would benefit more from me doing that
[02:04:59] <PetefromTn_> jeane grey killed scott and disentigrated professor Xavier
[02:05:05] <PetefromTn_> yeah
[02:05:16] <zeeshan|2> movie is so awesome
[02:05:20] <zeeshan|2> cause you get to see their younger selves
[02:05:20] <zeeshan|2> haha
[02:05:29] <zeeshan|2> when the professor could walk!
[02:05:31] <PetefromTn_> but in this movie the premise is that he and magneto/eric
[02:05:47] <PetefromTn_> help wolverine go back in time
[02:05:52] <PetefromTn_> to change the future
[02:06:12] <PetefromTn_> but how the hell can they do that if Professor Xavier is already dead?
[02:06:19] <Computer_Barf> do you guys think that 3d printed mounts could work temporarily on a g0704?
[02:06:31] <PetefromTn_> yeah I like the younger versions of them
[02:06:57] <LeelooMinai> Hmm, crashes with this: http://i.imgur.com/FPD1fDr.png
[02:07:04] <PetefromTn_> I mean I thought Prof X was already dead?
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[02:07:43] <PetefromTn_> its a great movie tho
[02:07:59] <PetefromTn_> maybe I am misunderstanding some of the time travel paradoxes in the movie or something.
[02:08:00] <zeeshan|2> i think there is a time delay or something?
[02:08:10] <PetefromTn_> I dunno
[02:08:12] <zeeshan|2> thats what i remember understanding about it
[02:08:34] <zeeshan|2> just enjoy it for what it is!! :P
[02:08:36] <zeeshan|2> dont over think it!! :D
[02:08:44] <zeeshan|2> ha ha ha. i can't believe im saying that to someone else.
[02:09:46] <PetefromTn_> http://www.denofgeek.com/movies/x-men-days-of-future-past/30636/11-questions-about-x-men-days-of-future-past-answered
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[02:11:10] <zeeshan|2> :/
[02:11:14] <zeeshan|2> PROFESSOR X cant die!!
[02:11:14] <zeeshan|2> :[
[02:11:39] <PetefromTn_> thats nutz
[02:11:58] <PetefromTn_> he can't die but that link has a fairly unbelievable explaination of it.
[02:12:26] <PetefromTn_> Apparently there are post credits information from X men the last stand that talks about it.
[02:12:34] <jdh> barf: I made temp mounts out of delrin
[02:12:38] <renesis> in xtitles anything can happen if they want it to
[02:12:44] <PetefromTn_> I don't have that DVD I don't think
[02:12:46] <renesis> theyve spun whole alt universes to make shit happen
[02:12:58] <PetefromTn_> true enough
[02:13:04] <PetefromTn_> Gotta love it...
[02:13:07] <renesis> i kind of want to get those books
[02:13:14] <PetefromTn_> it's like comic books come alive
[02:13:32] <renesis> i has the crossover intro/outro books, dunno what happened to all my xtitles =(
[02:13:34] <PetefromTn_> I gotta say that Wolverine was even more beliveable in this movie than the lsat one.
[02:13:39] <PetefromTn_> last
[02:14:14] <PetefromTn_> he looks to have bulked up quite a bit or they did some rather impressive CG on him.
[02:14:31] <PetefromTn_> Eric is chilling and better than ever as Magneto
[02:15:00] <PetefromTn_> the ending was really cool I won't spoil it for you guys who have not seen it yet.
[02:15:40] <PetefromTn_> Of course it leaves a TON open to speculation as to what they will do next with the movies
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[02:23:42] <Computer_Barf> jdh: thats great! I would think if you could make temp mounts from delrin it would be plausible that you could print some and use them long enough to cut out some aluminum ones.
[02:24:40] <Computer_Barf> jdh: did you follow hoss's plans or did you just come up with your own design?
[02:24:52] <jdh> hoss
[02:25:30] <Computer_Barf> Is it plausible I could simply take measurements and draw it up myself?
[02:25:44] <jdh> I doubt printed abs would hold for the ball screw mounts
[02:26:08] <jdh> probably fine for motor mounts though
[02:26:27] <jdh> I paid for the plans. It was well worth it for the time invested.
[02:26:45] <Computer_Barf> ball screw mounts? do you mean the couplers?
[02:26:56] <jdh> no.
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[02:27:01] <jdh> you want to use your normal screws?
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[02:27:26] <Computer_Barf> well the kit I was thinking of getting comes with c7 ballscrews
[02:27:46] <jdh> if you have tons of free time and like to tinker, do it yourself.
[02:27:47] <Computer_Barf> he has a nice kit but is taking his time with replies lately
[02:28:01] <jdh> if you just want a converted machine, buy the kit
[02:28:06] <_methods> i bought some chinese ball screws for mine
[02:28:15] <jdh> me too. $199 shipped
[02:28:26] <_methods> for your ball screws?
[02:28:30] <jdh> yes
[02:28:32] <_methods> i think that's about what i paid
[02:28:35] <Computer_Barf> what specifically is the function of the ball screw mounts?
[02:28:54] <jdh> they hold the nut to the mill
[02:29:16] <Computer_Barf> ahh yes I could see how that might not hold up.
[02:29:17] <_methods> oh i got mine for $100
[02:29:20] <_methods> shipped
[02:29:32] <_methods> aliexpress
[02:29:32] <Computer_Barf> jdh: are their round parts on them?
[02:29:43] <_methods> http://www.aliexpress.com/item/SFU1605-Ball-screw-L450mm-Ballscrew-With-Single-ballnut-for-CNC/2044380318.html
[02:30:29] <jdh> yes
[02:31:08] <_methods> i just got 3 450mm sticks
[02:31:19] <_methods> i think that was the longest ballscrew
[02:31:19] <jdh> and machined htem yourslef?
[02:31:32] <_methods> i'm going to
[02:31:41] <_methods> i'm waiting for some carbide inserts
[02:31:47] <_methods> and carbide cutoff tool
[02:32:06] <_methods> i still need to cut out all the mounting plates and order all the bearings and stuff too
[02:32:11] <jdh> lmb2008 will machine them, grind the one ballnut, ship them, for $200
[02:32:36] <_methods> hah damn i should have done that lol
[02:33:06] <jdh> a little more for teh double-ball-nuts
[02:33:32] <_methods> meh whatever it gives me a chance to play with the lathe i just bought
[02:33:55] <_methods> and an excuse to buy some tooling lol
[02:33:59] <jdh> I don't have anything tha tcan cut/thread them at the omment.
[02:34:04] <jdh> moment
[02:34:16] <_methods> yeah that would be a problem lol
[02:35:00] <Computer_Barf> any of you making anything cool on your machines?
[02:35:36] <LeelooMinai> Yes, I am making nice axis crashes today
[02:35:51] <jdh> to be expected
[02:36:25] <LeelooMinai> Maybe I have gotten too old and cannot read...
[02:36:41] <_methods> no you learn to read as you get older
[02:36:47] <_methods> you can't read when you are young
[02:38:18] <LeelooMinai> I almost thought I found my mistake. Found that axis.2.home-sw-in was not wired
[02:38:38] <LeelooMinai> Aside, I think that linuxcnc should detect this and do not home...
[02:38:47] <LeelooMinai> But it just went ahead
[02:38:57] <LeelooMinai> But even afeter I fixed it, same deal
[02:41:36] <pcw_home> Not a bad idea to check all the home switches with watch before trying to home
[02:42:06] <LeelooMinai> They work fine. I just watched the sw-in signal too and I pressed the switch manualy
[02:42:19] <LeelooMinai> I mean home-sw-in
[02:42:43] <Computer_Barf> I there such thing as water/oil proof endstops?
[02:42:58] <LeelooMinai> Yes
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[02:51:44] <zeeshan|2> lol i dont know why eaton loves to use rj11 jacks
[02:51:49] <zeeshan|2> for their communication port.
[02:52:04] <zeeshan|2> i just wanna hook up 2 wires!!
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[03:20:13] <LeelooMinai> I think I figured it out - scary stuff though
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[03:34:31] <jdh> and?
[03:36:54] <LeelooMinai> ok, so what I think happens is that my config and docs are both fine
[03:37:33] <LeelooMinai> But, I think when the switch was hit, the axis would not stop imediatelly, but trying to decelerate
[03:38:08] <jdh> don't mount th switch so it can be smashed
[03:38:14] <LeelooMinai> And the lever on the limit switch would bow and eventually it would release the switch and linux cnc would start the homing sequence again and keep going...
[03:39:08] <jdh> why would it start homing again
[03:39:20] <LeelooMinai> Well, ok, I think I need to understand what's going on with this deceleration - I thought that stepper can stop almost in-place if right breaking scheme is applied
[03:39:43] <LeelooMinai> Because the home switch was off at that point?
[03:40:30] <LeelooMinai> Well, I don't know if it was homing, but it kept going
[03:41:45] <LeelooMinai> I had to slow homing to a crawl for it not to happen
[03:41:53] <LeelooMinai> 1mm per second
[03:42:12] <LeelooMinai> Not sure if I need to adjust some deceleration parameters or if there are any
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[03:45:53] <jdh> or move you switch to compensate.
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[03:59:59] <LeelooMinai> Hmm, my Y stepper moves the table in the reverse direction now. Can I reverse it without rewiring it?
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[04:02:09] <LeelooMinai> Maybe flipping dir outputs will do it
[04:02:48] <LeelooMinai> Or not
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[04:08:28] <LeelooMinai> Maybe some parameter for hostmot
[04:12:23] <Connor> The lower 15x35x11 bearing on my Z had issues.. I'm not sure WTF happened, but the ball cage looks deformed and the bearing no longer runs smooth.. In fact it acts as a one way bearing at times.. :(
[04:12:32] <Connor> So, I'm dead in the water.
[04:12:58] <Tom_itx> welcome
[04:13:00] <Tom_itx> so am i
[04:13:20] <Connor> I don't understand HOW the heck the ball cage got damaged..
[04:14:08] <LeelooMinai> Hmm, there's something in the hostmot about inverting IO pins - maybe if I invert one for the dir on the drivers it would flip the rotation
[04:14:42] <Connor> Tom_itx: What happened with your stuff?
[04:15:04] <Tom_itx> http://tom-itx.ddns01.com:81/~webpage/rue/7I47.jpg
[04:15:18] <Tom_itx> upper right, left and lower right
[04:15:33] <Connor> Yea.. I see 3 chips toasted.. WTF did you do ?
[04:15:41] <Tom_itx> really no idea
[04:16:02] <LeelooMinai> You could potentially replace them
[04:16:04] <Tom_itx> http://tom-itx.ddns01.com:81/~webpage/rue/7I43.jpg
[04:16:10] <Tom_itx> just above the header on the right too
[04:16:30] <Tom_itx> the plans are to replace them yes
[04:16:42] <renesis> rev voltage
[04:16:46] <zeeshan|2> wow
[04:16:48] <zeeshan|2> i love putty
[04:16:49] <zeeshan|2> and pico
[04:16:53] <Connor> Can pcw_home fix them? or you going to try to ?
[04:16:55] <zeeshan|2> it transmits color to my terminal in windows
[04:16:55] <zeeshan|2> :D
[04:16:59] <renesis> putty tray ftw
[04:17:01] <Tom_itx> i'll try
[04:17:18] <Tom_itx> hardly worth his time to fix em
[04:18:07] <Connor> I'm really aggravated at the bearing getting damaged.. I have NO idea how it could have happened.
[04:19:10] <Tom_itx> pcw_home you still around?
[04:19:21] <Tom_itx> are there bit files available for the 7i90?
[04:22:37] <LeelooMinai> O, it worked: setp hm2_5i25.0.gpio.002.invert_output 1
[04:22:55] <Tom_itx> ahh there might be one... 7i90_epp_sv4_7i47.bit
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[04:49:53] * LeelooMinai renames HOME_OFFSET to HOME_SWITCH_HOME_OFFSET
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[04:51:02] <zeeshan|2> ..
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[04:51:06] <zeeshan|2> finally figured it out? :D
[04:51:13] * zeeshan|2 trolls
[04:52:00] <LeelooMinai> No, that's was a side-note only:)
[04:52:17] <zeeshan|2> man im looking at some C code
[04:52:21] <zeeshan|2> i've never seen "static USHORT"
[04:52:22] <zeeshan|2> in my life before
[04:52:41] <zeeshan|2> "unsigned 16 bit integer"
[04:52:42] <zeeshan|2> hmm
[04:53:17] <zeeshan|2> ah the static ensures the variable remembers its value
[04:53:19] <LeelooMinai> Yes, one of the basic types...
[04:53:26] <zeeshan|2> ive never used that before
[04:53:31] <zeeshan|2> int char float
[04:53:34] <zeeshan|2> were the main ones :P
[04:54:22] <LeelooMinai> short and double are the others
[04:55:11] <zeeshan|2> double i remember too
[04:55:15] <zeeshan|2> short i dont remember at all
[04:55:24] <LeelooMinai> ok, now I shall try homing all axis at once and if it works I will finally deem it reasonable for now
[04:56:09] <zeeshan|2> LeelooMinai: ms programmer
[04:56:37] <zeeshan|2> #define REG_INPUT_START 1000 static USHORT usRegInputStart = REG_INPUT_START
[04:56:44] <zeeshan|2> whats going on there
[04:56:53] <zeeshan|2> what was the point of the define
[04:57:10] <zeeshan|2> if you're going to store that value in another variable anyway :P
[04:57:28] <LeelooMinai> That does not really make sense...
[04:57:39] <LeelooMinai> Or was it supposed to be two lines?
[04:57:43] <zeeshan|2> yes
[04:57:44] <zeeshan|2> my bad :P
[04:58:20] <LeelooMinai> It's probably so you can change the 1000 cakue in just ne place.
[04:58:29] <LeelooMinai> Maybe they indented to use it in other places later
[04:58:44] <LeelooMinai> cakue=value
[04:59:03] <LeelooMinai> Finally, homed
[04:59:23] <LeelooMinai> Took me only half a day to figure it out
[04:59:31] <zeeshan|2> nice
[04:59:45] <LeelooMinai> That was sarcastic
[04:59:47] <zeeshan|2> i think your idea of HOME_SWITCH_HOME_OFFSET
[04:59:54] <zeeshan|2> was a good suggestion
[04:59:58] <zeeshan|2> cause it gets rid of the confusion :)
[05:00:06] <LeelooMinai> Well, the other name is just misleading
[05:00:24] <LeelooMinai> Because it's not the offest of the home at all:)
[05:03:17] <LeelooMinai> Now, I have this idea for the table that is a bit risky, but if works it would be super cheap
[05:06:24] <LeelooMinai> Because proper alu one will be at least $300
[05:08:39] <XXCoder> table?
[05:08:54] <LeelooMinai> I mean x-y table for my cnc
[05:09:04] <XXCoder> ahh yea
[05:09:11] <XXCoder> mdf?
[05:09:30] <LeelooMinai> I have a narrow bed only now for 4 blocks and ballscrew block
[05:09:50] <LeelooMinai> No mdf... that wpuld be unworthy:)
[05:09:57] <LeelooMinai> I thought of using concrete
[05:10:08] <LeelooMinai> And embedding in it t-slots
[05:10:32] <LeelooMinai> And probably tubing for negative air pressure
[05:10:56] <LeelooMinai> I would have to do some test and practice it at smaller scale, but concrete is super-cheap
[05:11:09] <LeelooMinai> I would also need something flat on both sides
[05:11:41] <LeelooMinai> Not sure what would be flat-enough yet. I could use surface plate even possibly, if I bought one
[05:11:47] <XXCoder> yeah. theres plans for expoxy grinite
[05:12:00] <LeelooMinai> Don't really know how flat for example glass pane is
[05:12:01] <XXCoder> stronger and more stable than even alum, but might cost slightly more than alum
[05:12:30] <XXCoder> you can always use cnc itself to make flat surface
[05:12:32] <LeelooMinai> More?
[05:12:38] <zeeshan|2> dopes your table move?
[05:12:44] <zeeshan|2> *does your
[05:12:49] <XXCoder> concerete surface then grind it flat using cnc
[05:12:56] <LeelooMinai> I calculated alu plate to $300 and the concrete, the simple kind is few $
[05:13:05] <LeelooMinai> Yes, the table moves
[05:13:14] <zeeshan|2> can your machine handle the extra weight?
[05:13:19] <LeelooMinai> So it cannot be too heavy and thick - maybe 1-2 inches
[05:14:03] <LeelooMinai> I think if I made it 1 inch it would not be too heavy. I kn ow surface plate that is 3-4 inches would be 50kg - that's too brutal:)
[05:14:08] <XXCoder> ok
[05:14:20] <zeeshan|2> what size steppers?
[05:14:22] <LeelooMinai> I would have to put some rebar-like something inside so it does not break
[05:14:25] <XXCoder> what is its requirements
[05:14:41] <zeeshan|2> what torque steppers not size :)
[05:14:44] <LeelooMinai> alu milling is the target
[05:15:00] <LeelooMinai> But the size of the table is not too huge - 21 by 21 imches
[05:15:11] <XXCoder> hmm thin alum backed mdf?
[05:15:19] <LeelooMinai> Steppers are 450oz I think
[05:15:50] <XXCoder> or you can add metal structure below mdf to make it strong. then use cnc to make top flat
[05:16:26] <LeelooMinai> how will I clamp anything to mdf? :)
[05:16:40] <XXCoder> drill it full of holes
[05:16:49] <XXCoder> then you can add screws as needed to clamp
[05:17:12] <XXCoder> or buy few 8020 groove alum and insert it between strips of mdf
[05:17:17] <LeelooMinai> I don't know... sounds like the clamping would just tear off
[05:18:24] <XXCoder> http://www.ebay.com/itm/8020-T-Slot-Aluminum-Extrusion-10-S-1050-x-48-N-/370227288701?pt=LH_DefaultDomain_0&hash=item5633441a7d
[05:19:23] <LeelooMinai> Yes, I thought of something like this
[05:19:31] <XXCoder> http://www.makermasters.com/wp-content/uploads/2012/05/IMG_5084.jpg
[05:19:36] <XXCoder> finally found
[05:19:39] <LeelooMinai> But maybe not with mdf:)
[05:20:20] <LeelooMinai> Since my bed moves I cannot easily support it on the edges
[05:20:34] <XXCoder> hmm
[05:20:34] <LeelooMinai> So I need something very stiff for the whole area
[05:20:38] <XXCoder> yeah
[05:21:05] <XXCoder> structured bottom would work. even if you plan to put concerete slab for top
[05:21:21] <LeelooMinai> I loled when metalsupermarket quoted me $888 for the mic6 plate for it
[05:21:33] <XXCoder> hell you can even build such structure in concerete
[05:21:35] <XXCoder> why not?
[05:21:47] <XXCoder> leave some parts outside so it can be mounted
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[05:22:07] <LeelooMinai> What do you mean "structured bottom"?
[05:22:19] <XXCoder> well hmm
[05:22:33] <XXCoder> basically like array of strips of steel u beams or something
[05:22:44] <XXCoder> right design would be very rigid
[05:23:21] <LeelooMinai> Yes, although it would add to the height of the table
[05:23:55] <XXCoder> not nesscarly if mount point is on bottom of concerete. just check so it does not hit anything when moving around lol
[05:23:56] <LeelooMinai> My cnc platform is pretty tall though, since I prediceted I may need extra height
[05:24:14] <zeeshan|2> eMBInit( MB_RTU, 0x0A, 0, 38400, MB_PAR_EVEN
[05:24:16] <zeeshan|2> er3
[05:24:17] <zeeshan|2> sorry
[05:24:25] <LeelooMinai> hacker
[05:24:46] <zeeshan|2> tryying to communicate through modbus protocol :/
[05:24:51] <zeeshan|2> just a simple "data request"!
[05:24:56] * XXCoder not found; Error 404
[05:25:20] <XXCoder> LeelooMinai: anyway concerete probably would work
[05:25:28] <LeelooMinai> Hmm, I wonder what the density of concrete is
[05:25:30] <XXCoder> you probably will have to use cnc to flatten it and add stuff
[05:25:50] <XXCoder> you could even insert stuff so you can clamp stuff
[05:26:12] <zeeshan|2> LeelooMinai: varies a lot.
[05:26:16] <XXCoder> not sure if theres way to add screw holes to concerete. no idea
[05:26:31] <zeeshan|2> but to answer your question
[05:26:33] <LeelooMinai> I would jsut embedd inserts
[05:26:36] <LeelooMinai> and t-slots
[05:26:38] <zeeshan|2> civil engineers use 150lb/cu*ft
[05:26:43] <zeeshan|2> cu ft
[05:26:46] <zeeshan|2> not *
[05:26:51] <zeeshan|2> how i know this a bit scary.
[05:26:56] <LeelooMinai> What are those barbarian units
[05:27:03] * zeeshan|2 is taking a grad level civ eng course :(
[05:27:08] <zeeshan|2> only thing that was avaiable.
[05:27:23] <zeeshan|2> LeelooMinai: 150lb/ft^3
[05:27:29] <zeeshan|2> <- measures his fat ass in lb
[05:27:37] <zeeshan|2> i have no clue how heavy kg feels :)
[05:28:12] <LeelooMinai> About 2 lbs +
[05:28:21] <zeeshan|2> so your table will weigh around 0.51*150
[05:28:27] <zeeshan|2> 21"x21"x2"
[05:28:37] <XXCoder> zee rebars included?
[05:29:00] <LeelooMinai> Ok, it's 1600-2400kg/m^3
[05:29:00] <zeeshan|2> no that'll make it heavyer
[05:29:07] <LeelooMinai> And granite is 2.6
[05:29:23] <LeelooMinai> So it can be quite heavy
[05:29:30] <zeeshan|2> i persume itll be around 100lb
[05:29:32] <zeeshan|2> if you rebar it
[05:29:48] <zeeshan|2> since you already know concrete performs like crap in tension
[05:29:54] <zeeshan|2> you'll need to do something about the t-slots :p
[05:30:14] <LeelooMinai> 100lbs is too much
[05:30:27] <LeelooMinai> imho
[05:30:34] <zeeshan|2> why do you think your 21x21x.5" 6061 plate will cost you 300 bux
[05:30:50] <LeelooMinai> Because it costs that much from metalsupermatkets
[05:30:58] <LeelooMinai> 0.75 one
[05:31:03] <zeeshan|2> sounds like a ri
[05:31:05] <zeeshan|2> rip =/
[05:31:09] <LeelooMinai> 0.5 is to thin imho
[05:31:17] <zeeshan|2> i agree :P
[05:31:36] <XXCoder> lee you in usa?
[05:31:37] <zeeshan|2> did you call them?
[05:31:42] <zeeshan|2> or are you using their website
[05:31:58] <LeelooMinai> I wonder if 1 imch concrete could survive if I puts something underneath it - like steel-something
[05:32:05] <LeelooMinai> No, Canada
[05:32:10] <XXCoder> lee yeah
[05:32:28] <LeelooMinai> Yes, I know their prices and I got quotes from them few times for other parts of my frame
[05:32:29] <XXCoder> hmm best would be this "bent outwards u" beams
[05:32:35] <XXCoder> cant really explain
[05:32:52] <XXCoder> picture this, long legged u with tops bent outwards to flat again
[05:32:54] <LeelooMinai> I could pour concrete over them so the bends would become part of it
[05:33:02] <XXCoder> -u- basically
[05:33:42] <LeelooMinai> Or just u-shaped with bottom part being bottom part and the sides embedded in the concrete
[05:34:02] <zeeshan|2> http://www.kijiji.ca/v-business-industrial/barrie/aluminum-6061-t6/526343689?enableSearchNavigationFlag=true
[05:34:03] <zeeshan|2> lol
[05:34:07] <zeeshan|2> that would be sweet!
[05:34:12] <zeeshan|2> what a random shape though
[05:34:27] <XXCoder> wow random
[05:34:35] <XXCoder> lee well there may be cheap way
[05:34:35] <zeeshan|2> for 50bux
[05:34:44] <zeeshan|2> i'd join two of thsoe together!
[05:34:44] <XXCoder> buy large pile of alum swarf and kiln em
[05:34:50] <zeeshan|2> rofl XXCoder!
[05:35:05] <LeelooMinai> Is tath 38x of those?
[05:35:08] <LeelooMinai> 48
[05:35:16] <XXCoder> 48x
[05:35:17] <LeelooMinai> There's no even size
[05:35:34] <XXCoder> zeeshan|2: not sure whats funny about my idea
[05:36:07] <zeeshan|2> you really expert her to start a home foundry
[05:36:12] <zeeshan|2> *expect
[05:36:26] <LeelooMinai> I don't want a furnace in my room, no
[05:36:50] <XXCoder> you just need 3 plant pots and some stuff
[05:36:54] <XXCoder> lemme find that video
[05:37:19] <XXCoder> https://www.youtube.com/watch?v=0va8wDM6Z44
[05:37:26] <zeeshan|2> LeelooMinai: do you really need t-slots?
[05:37:54] <zeeshan|2> do you really think you can melt 60 lb of aluminum
[05:37:55] <LeelooMinai> zeeshan|2: Well, I saw those cheap sets for t-slots - machinist clamps. Aren't those nice to use?
[05:37:56] <zeeshan|2> in a clay pot? :P
[05:38:00] <XXCoder> yeah
[05:38:05] <XXCoder> clay pot is quite strong
[05:38:11] <XXCoder> strong enough for one use anyway
[05:38:18] <zeeshan|2> LeelooMinai: they are nice but honestly you could just drill whatever material you have
[05:38:26] <zeeshan|2> with threaded holes
[05:38:34] <zeeshan|2> like the mini pallet oxtoolco has
[05:39:10] <LeelooMinai> I will see. I think first I will just buy some concrete and do some experiments on smaller scale:)
[05:39:12] <zeeshan|2> https://www.youtube.com/watch?v=b2qKy43tJcY
[05:39:29] <zeeshan|2> if you do that, maybe you can get away wwith thinner aluminum
[05:39:31] <zeeshan|2> 3/8"?
[05:39:44] <zeeshan|2> but i guess youll have deflection problems then
[05:40:00] <XXCoder> omg home hobbyist video that does not make me want to vomit
[05:40:08] <zeeshan|2> thats not a hobbyist
[05:40:14] <zeeshan|2> :P
[05:40:19] <XXCoder> theres bad shop videos too
[05:41:21] <LeelooMinai> That's not a hobbyist - it's a dedicated pro who even cut all the hair so it does not go into power tools
[05:41:41] <XXCoder> funny thing I do same thing by accient
[05:41:43] <zeeshan|2> rofl
[05:41:45] <XXCoder> my hair grows so slowly
[05:42:31] <XXCoder> https://www.youtube.com/watch?v=HalUbo8e-F0
[05:42:56] <XXCoder> oh rheres microwave smelting too lemme get link when done watch that lol
[05:43:17] <XXCoder> more like "watch stills" as I cant watch handheld videos
[05:43:26] <LeelooMinai> XXCoder: Ok, I want it to be cheap, but melting coke cans is crossing the line
[05:43:34] <XXCoder> why?
[05:43:48] <LeelooMinai> ...
[05:43:58] <XXCoder> too much coke in life already? ;)
[05:44:06] <XXCoder> https://www.youtube.com/watch?v=GwQ4C2dNkp4
[05:44:39] <XXCoder> guys nuts eh
[05:45:11] <LeelooMinai> I wonder if that is 6061 grade - probably not:p
[05:45:18] <XXCoder> way off im sure
[05:45:53] <XXCoder> man
[05:45:55] <XXCoder> my brain sucks
[05:46:01] <XXCoder> I wish I can watch handheld videos
[05:46:29] <XXCoder> interesting https://www.youtube.com/watch?v=O_TU-PCudoE
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[05:49:26] <XXCoder> wow thats so high quality lol
[05:49:56] <XXCoder> all exposed to air like that is probably why theres so much crud on top of melted alum.
[05:50:05] <XXCoder> he should have used lid or something
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[06:04:05] <XXCoder> LeelooMinai: good luck though :)
[06:04:10] <XXCoder> with that concerete test
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[11:18:40] <archivist> rob_h, what diameter does your sliding head handle? and can it face and side mill
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[11:33:06] <rob_h> 20mm
[11:33:14] <rob_h> yea 2 power holders on cross slide
[11:34:55] <rob_h> it only has indexing no C axis so can not contour mill
[11:41:06] <archivist> I just made a part for someone fits a standard 1/4 drive screw driver but is for a ring nut with 4 pegs on the face 19mm dia
[11:42:17] <archivist> rather surprised I cannot find the right ring nut spanner/driver, just contemplated
[11:42:29] <archivist> contemplating
[11:44:29] <rob_h> kinda thing you use a C spanner on
[11:44:57] <archivist> these are in a panel recess
[11:45:14] <rob_h> yea kinda makes it hard to get onto, you want like a socket that fits it
[11:45:36] <archivist> a tube with pegs
[11:45:52] <rob_h> http://www.toolstop.co.uk/sealey-cv008-axle-hub-nut-socket-for-scania-420-3-4sq-drive-p65154
[11:46:29] <archivist> sort of yes but fits CB microphone sockets
[11:47:32] <archivist> I did have fun failing to undo a scania crankshaft nut once
[11:47:58] <archivist> it laughed at my torque multiplier
[11:48:40] <rob_h> take you need a few of these or just 1?
[11:50:24] <archivist> I made the one :) was thinking is there a market and I know who can make them
[11:50:42] <rob_h> we have the tech haha
[11:51:20] <rob_h> have to show us a pic of what it fits too and what is is ur making prob understand abit better then
[11:51:23] <archivist> I made this one part lathe part 5 axis,
[11:52:35] <archivist> but I can see it can either be made on a sliding head or piss about with 2" lengths on the 5 axis
[11:53:50] <rob_h> yea only thing is dont have face milling but might be something you can do other ways instead of milling
[11:54:36] <rob_h> i need to get the other superlsant retrored as that has Z and X milling on top turret
[11:55:25] <rob_h> poping out for abit back later
[11:55:53] <archivist> cya
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[15:56:04] <Tom_itx> pcw_home, what's the difference between the pin_svst2_4_7i47_72.vhd and pin_svst2_4_7i47d_72.vhd ?
[15:57:14] <pcw_home> D probably means it has the DPLL module
[15:59:40] <Tom_itx> which would i use for the 7i90?
[15:59:43] <Tom_itx> either?
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[16:01:52] <Tom_itx> oh.. i see
[16:02:21] <Tom_itx> what's teh dpll function for?
[16:05:05] <pcw_home> retiming the input sampling time on absolute encoders and stepgens (so far, quadrature encoder still left to do)
[16:07:29] <pcw_home> makes position feedback much more tolerant of jitter (200 jitter usec is liveable at 2400 IPM with DPLL for example)
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[16:14:04] <ssi> is that just a firmware difference, or is there a hardware difference required as well?
[16:14:08] <pcw_home> (without DPLL, 200 usec delay spikes show up as a 8 mill noise spikes in the control loop at 2400 IPM )
[16:14:30] <ssi> dpll is on the fpgas I'd think?
[16:14:42] <Tom_itx> yes
[16:14:48] <Tom_itx> a hm2 function
[16:14:54] <pcw_home> This is a DPLL in normal FPGA fabric
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[16:15:30] <pcw_home> not the FPGA specific clock manager DPLL
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[16:15:58] <ssi> gotcha
[16:16:16] <Tom_itx> probably wouldn't matter on my setup then
[16:16:26] <Tom_itx> i'll never reach 2400 ipm
[16:16:41] <ssi> try harder! :D
[16:16:45] <pcw_home> no, its mainly forPreemt-RT/ Ethernet
[16:17:20] <Tom_itx> i assume the 7i90 would work as a drop in replacement for the 7i43
[16:17:30] <pcw_home> Pretty much
[16:17:35] <Tom_itx> if i'm unable to fix this thing
[16:17:42] <Tom_itx> except more io
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[16:17:59] <Tom_itx> use the _72 bit files instead of the _48 ones
[16:18:34] <pcw_home> more I/O, faster clocks, SPI, Serial, Sserial remote modes)
[16:19:37] <Tom_itx> don't forget cheaper :D
[16:20:10] <pcw_home> Well its build cheaper (linear supplies etc)
[16:21:18] <pcw_home> Whee! Xilinx finally came out with a small Artix chip. will start using that on new designs
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[16:21:43] <Tom_itx> what's it got that makes it nicer??
[16:21:45] <ssi> whats the part num?
[16:22:13] <ssi> XC7A15T? or smaller than that
[16:22:56] <pcw_home> Yea the -35 was the smallest until a week or so ago
[16:23:48] <pcw_home> so you can get a pin compatible chip from -15 to -100 in the same 256 BGA
[16:23:58] <ssi> looks like the 15 isn't available at digikey yet
[16:24:15] <pcw_home> it wont be available for a while
[16:24:36] <ssi> do you have an idea what the price is gonna be like relative to the s6 lx9?
[16:25:06] <ssi> also I wonder if it'll be supported by the free tools
[16:25:16] <pcw_home> my guess is the -15 will be like $18 (the -35 is $30)
[16:25:36] <pcw_home> yes its supported by the free tools
[16:25:56] <Tom_itx> webpack?
[16:26:06] <pcw_home> vivado
[16:26:11] <Tom_itx> or it's replacement..
[16:26:13] <Tom_itx> yeah that
[16:26:17] <ssi> cool
[16:26:23] <Tom_itx> have you started using that yet?
[16:26:41] <pcw_home> avago vivado avacodo
[16:26:44] <ssi> hahah
[16:27:08] <pcw_home> Not yet just played a bit
[16:27:22] <Tom_itx> similar to webpack or a whole different animal?
[16:27:49] <pcw_home> looked similar (basically just different front end)
[16:28:09] <pcw_home> so scripts should be similar
[16:28:29] <awallin> will the artix7 eventually replace the spartan6?
[16:29:03] <pcw_home> probably but Xilinx supports stuff for a looong time
[16:29:45] <pcw_home> our little embedded processors run at 200MHz in Artix (vs ~120 MHz in SP6)
[16:30:23] -!- moorbo has quit []
[16:30:36] <pcw_home> plus the built in dual 12 bit 1 ms/sec A-Ds are nice
[16:33:49] * JT-Shop wonders if he want's try and learn c or c++ again...
[16:34:05] <pcw_home> again?
[16:34:23] <ssi> it's like riding a bike! :D
[16:34:48] <_methods> or a bull
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[16:38:16] <JT-Shop> well trying again to learn one or the other
[16:38:33] <ssi> I'd definitely go C
[16:39:01] <Tom_itx> agree
[16:39:20] <Tom_itx> JT-Shop do you have the K&R book?
[16:40:49] <archivist> C for raw power :)
[16:41:59] <_methods> you should learn ruby that's the best language of ALL
[16:42:13] <_methods> you'll unlock the power of skinny jeans
[16:42:15] <ssi> hahahah
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[16:42:35] <_methods> and the frappucino
[16:44:02] <JT-Shop> Tom_itx, no
[16:44:14] <Tom_itx> pm
[16:44:34] <archivist> you need the 2nd ed for the joke in K&R
[16:44:44] <JT-Shop> got it thanks
[16:45:20] <TekniQue> what is the joke?
[16:45:38] <archivist> look up recursion in the index
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[16:47:18] <TekniQue> haha
[16:47:27] <TekniQue> the last entry refers to itself
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[16:59:45] <shaun413> hi
[16:59:48] <shaun413> anyone hve a flir?
[17:03:54] * JT-Shop has worked through the first example, compiled and ran
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[17:14:33] <Tom_itx> JT-Shop what compiler are you using?
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[17:14:55] <JT-Shop> gcc
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[17:15:54] <Tom_itx> pcw_home does IoPortTag have 2 instances on the _48 and 3 on the _72 because of the extra header?
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[17:46:48] <Tom_itx> pcw_home, i'm guessing so since _96 has 4
[18:02:22] <Tom_itx> also, do you load the bit files to the 7i90 the same as you do on the 5i25 with mesaflash?
[18:02:31] <Tom_itx> instead of in the ini file?
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[20:31:05] <renesis> http://www.penn-elcom.com/Part-IMG/MED/Hardware/Dishes/D0604-01.jpg
[20:31:33] <renesis> heh, im not sure but i think thats it as far as penn elcom mech drawings
[20:32:13] <LeelooMinai> Any ideas what would be acceptable weight for XY table of 21" by 21" sitting on 3 blocks on 20mm rails? I am trying to get sense of what would be too heavy and cause problems, but not sure how to go about it...
[20:32:21] <LeelooMinai> 4 blocks*
[20:33:23] <LeelooMinai> The rails/blocks are typical Chinese 20mm ones, that look like this: http://www.aliexpress.com/item/2-pcs-SBR20-L-600mm-Linear-Rails-4-pcs-SBR20UU-straight-line-motion-block-for-SFU2005/838174537.html
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[20:34:08] <LeelooMinai> I would not like to make a table that would be too heavy and wore them off or something
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[21:36:43] <zeeshan> LeelooMinai: how much deflection
[21:37:11] <zeeshan> youre going to hit your deflection limit a lot more before your contact stress limit
[21:37:22] <zeeshan> contact stress limit being what will cause wear issues
[21:39:05] <zeeshan> how many mounts will you use to attach the table to the rails?
[21:39:53] <LeelooMinai> it will be attached to aluminum bed that already sits on 4 blocks
[21:40:02] <zeeshan> on each corner of the table?
[21:40:33] <zeeshan> take the weight of the table divide it by 4 and
[21:40:39] <CaptHindsight> you can run the numbers and determine ~how much deflection you'll have
[21:40:44] <LeelooMinai> No, the bed is narrower than 21" - 8.5"
[21:40:47] <zeeshan> treat the rail as a simple supported beam
[21:41:07] <zeeshan> http://www.efunda.com/formulae/solid_mechanics/beams/casestudy_display.cfm?case=simple_2symload
[21:41:11] <zeeshan> you can use that
[21:41:31] <CaptHindsight> IF we knew what the material is
[21:41:36] <zeeshan> rail is steel
[21:41:51] <zeeshan> e= 200GPa
[21:41:52] <zeeshan> or 30kpsi
[21:41:53] <LeelooMinai> The rails are supported
[21:41:53] <zeeshan> ksi
[21:41:54] <CaptHindsight> but Chinese mystery bearing shiny stuff
[21:42:21] <CaptHindsight> you're better off just measuring the deflection
[21:42:24] <LeelooMinai> And sit on rather big aluminum rectangular tubes
[21:42:30] <zeeshan> shes designing :P
[21:42:35] <CaptHindsight> models will just be a ballpark
[21:42:53] <zeeshan> LeelooMinai: assume the big tubes to be fixed
[21:42:58] <zeeshan> your 20mmshafts will bend first
[21:43:02] <LeelooMinai> Well, I just need some more or less sane numbers
[21:43:17] <zeeshan> youll get results wiuthin +/-10%
[21:43:20] <zeeshan> using that calculator
[21:43:33] <zeeshan> as long as you give it the right dimensions!
[21:43:37] <LeelooMinai> They will bend even if they are supported on the whole length?
[21:43:45] <zeeshan> OH
[21:43:52] <zeeshan> i thought they were floating
[21:43:53] <zeeshan> :P
[21:44:15] <CaptHindsight> ask for a drawing or model vs 1000 questions
[21:44:17] <zeeshan> that is a statically indeterminate problem :P
[21:44:28] <LeelooMinai> Yes, I don't really worry about those bending - more like wearing off the bearings
[21:44:56] <zeeshan> http://www.amesweb.info/HertzianContact/HertzianContact.aspx#.VHJVU8kf6_0
[21:45:00] <CaptHindsight> it depends on how cruchy they are when they arrive
[21:45:05] <zeeshan> then youre looking at hertzian stresse.
[21:45:05] <LeelooMinai> 4 blocks - say if I put 7kg on each block - will it be a problem?
[21:45:11] <zeeshan> no
[21:45:36] <LeelooMinai> Where would the problems start?
[21:45:43] <LeelooMinai> At what weights?
[21:45:48] <zeeshan> without knowing the ball size in your bearing
[21:46:01] <CaptHindsight> when they dropped the rails and bearing into the dirt before assembly
[21:46:08] <zeeshan> but ball park around 700lb
[21:46:11] <zeeshan> in that range
[21:46:32] <zeeshan> lol capt
[21:46:36] <LeelooMinai> That would suggest I should just stop worrying about the weight of the table.
[21:46:57] <zeeshan> weight of the table just means more mass to move
[21:47:02] <zeeshan> which loads up your steppers :P
[21:47:19] <CaptHindsight> LeelooMinai: contamination is your greatest concern, clean and repack when you get them
[21:47:20] <LeelooMinai> Yes, but I am not going for some super-fast setup
[21:47:21] <SpeedEvil> or unloads them if the inertia of the table ishelping
[21:47:37] <zeeshan> SpeedEvil: there is still friction
[21:47:41] <zeeshan> even though theyre ball screws
[21:47:51] <SpeedEvil> zeeshan: not if you use maglev
[21:47:54] <zeeshan> haha
[21:47:54] <zeeshan> :D
[21:48:17] <LeelooMinai> There would still be friction:)
[21:48:22] <zeeshan> yea air
[21:48:27] <CaptHindsight> first of all did you convert everything to newtons?
[21:48:28] <zeeshan> =P
[21:48:32] <LeelooMinai> No, magnetic forces + metal
[21:48:39] <zeeshan> o
[21:48:46] <LeelooMinai> Just not very big one
[21:50:21] <SpeedEvil> LeelooMinai: vacuum
[21:50:29] <LeelooMinai> As to my concrete table - I think I should not embed aluminum t-slots in them
[21:50:43] * SpeedEvil has been whittling on graniterecently
[21:50:54] <LeelooMinai> Since aluminum expands at higher rate then concrete
[21:51:05] <zeeshan> what are you designing a space shuttle
[21:51:05] <SpeedEvil> Cutting a 10*10*14.1cm*10m slice off my house
[21:51:06] <LeelooMinai> But where I will get steel t-slots inserts...
[21:51:10] <zeeshan> that is gonna see massive thermal gradients?
[21:51:10] <zeeshan> lol
[21:51:22] <SpeedEvil> LeelooMinai: ebay
[21:51:24] <zeeshan> SpeedEvil: using what tool?
[21:51:31] <SpeedEvil> zeeshan: 10" angle grinder
[21:51:36] <zeeshan> diamond disc?
[21:51:38] <SpeedEvil> yes
[21:51:40] <zeeshan> nice
[21:51:42] <LeelooMinai> ebay is not that great for ordering heavy stuff made from steel
[21:51:44] <CaptHindsight> LeelooMinai: what size table do you want?
[21:51:50] <LeelooMinai> 21x21
[21:52:07] <LeelooMinai> I thought of mixing steel and concrete to make it
[21:52:18] <LeelooMinai> With t-slots
[21:52:23] <CaptHindsight> epoxy + granite
[21:52:30] <LeelooMinai> That's too expensive
[21:52:42] <CaptHindsight> epoxy + polyester
[21:52:43] <zeeshan> http://nicoyektai.com/blog/wordpress/wp-content/uploads/2013/09/concrete-dining-table.jpg
[21:52:48] <zeeshan> this is what LeelooMinai is imagining
[21:52:53] <CaptHindsight> <$50
[21:53:08] <LeelooMinai> Yes, well, they make kitchen countertops from concrete
[21:53:16] <LeelooMinai> I think it could work for my table
[21:53:25] <CaptHindsight> it won't hold up well
[21:53:31] <zeeshan> CaptHindsight: let her do it
[21:53:33] <zeeshan> :D
[21:53:38] <CaptHindsight> unless you acrylate the concrete
[21:53:54] <LeelooMinai> Not bare concrete - bottom from steel probably and with some mesh inside to reinforce it
[21:53:56] <SpeedEvil> CaptHindsight: or apply granite tiles to thetop
[21:53:58] <CaptHindsight> I'm not stopping anyone
[21:54:41] <LeelooMinai> What can happpen in the worst - it could crack, but unlikely if done right
[21:54:48] <zeeshan> http://www.google.ca/imgres?imgurl=http%3A%2F%2F3.bp.blogspot.com%2F-X-tOKguaD7U%2FUKhQCR-YaRI%2FAAAAAAAAAco%2FcpEjw900HuU%2Fs1600%2FDSCF1056.JPG&imgrefurl=http%3A%2F%2Fcnc-build.blogspot.com%2F&h=1200&w=1600&tbnid=Zm8vRjBevPLEhM%3A&zoom=1&docid=pZzuteBizRJnWM&ei=g1dyVMu2IJKVyATekIDoCQ&tbm=isch&client=firefox-a&ved=0CBwQMygBMAE&iact=rc&uact=3&dur=146&page=1&start=0&ndsp=45
[21:54:50] <zeeshan> er
[21:54:53] <LeelooMinai> It withstands winters and hot supper
[21:54:55] <zeeshan> http://3.bp.blogspot.com/-X-tOKguaD7U/UKhQCR-YaRI/AAAAAAAAAco/cpEjw900HuU/s1600/DSCF1056.JPG
[21:54:55] <zeeshan> :D
[21:54:57] <LeelooMinai> summers*
[21:55:00] <LeelooMinai> supper, lol
[21:55:29] <LeelooMinai> red oeak cnc ftw?
[21:55:36] <zeeshan> http://02c9c5d.netsolhost.com/images/Precision_Router/Precision_CNC_Router.jpg
[21:55:39] <zeeshan> how much is a table like that
[21:55:44] <zeeshan> in 21"x21"
[21:55:53] <LeelooMinai> Too much from ebay
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[21:56:02] <zeeshan> how much
[21:56:04] <LeelooMinai> Maybe if I was not in Canada
[21:56:05] <zeeshan> im curious for self knowledge
[21:56:21] <CaptHindsight> t-slot in epoxy granite
[21:56:39] <LeelooMinai> CaptHindsight: I cannot get that epoxy granite for reasonable price here
[21:56:39] <CaptHindsight> and don't keep the router by the door
[21:56:58] <CaptHindsight> it's <15% epoxy
[21:57:06] <LeelooMinai> At least so far I did not find eny reasonable source for it
[21:57:18] <LeelooMinai> Right, and I cannot even buy epoxy easily
[21:57:25] <zeeshan> \??
[21:57:27] <jdh> c'mon, everyone has epoxy
[21:57:27] <zeeshan> home depot has it
[21:57:28] <CaptHindsight> a quart of fibergalss resin and granite pebbles
[21:57:35] <renesis> heh nice
[21:57:43] <LeelooMinai> zeeshan: Then show me (the Canadian one that is)
[21:57:48] <Deejay> gn8
[21:57:52] <renesis> would make an awesome looking countertop
[21:58:10] <jdh> every boat store has great epoxy
[21:58:33] <CaptHindsight> http://www.homedepot.ca/product/bondo-fiberglass-resin/924724 whole gallon
[21:58:34] <renesis> also check 3d art supply places
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[21:59:00] <LeelooMinai> CaptHindsight: "unavailable in your area" for me
[21:59:07] <zeeshan> lol
[21:59:10] <zeeshan> you can buy that at ct
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[21:59:21] <renesis> bodywork is illegal in .ca
[21:59:25] <zeeshan> yea!
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[21:59:31] <zeeshan> i got all my supplies illegally :D
[21:59:34] <_methods> find a used surface plate
[21:59:38] <zeeshan> actually one thing is hard to get in canada
[21:59:39] <_methods> they go for cheap
[21:59:42] <zeeshan> ppg paints
[21:59:47] <zeeshan> in solvent form
[21:59:51] <zeeshan> you can get waterborne..
[22:00:02] <renesis> new surface plates from enco not too much
[22:00:07] <zeeshan> i ended up spraying the car with house of kolors
[22:00:09] <CaptHindsight> why do you want solvent urethanes?
[22:00:20] <zeeshan> CaptHindsight: my paint equipment is meant for it
[22:00:32] <zeeshan> and you dont need crazy air circulation either
[22:00:33] <roycroft> if you live in nevada surface plates from enco are not too expensive
[22:00:41] <zeeshan> considering i was painting one car
[22:00:45] <CaptHindsight> I use a roller
[22:00:45] <zeeshan> it was easier/cheaper
[22:00:45] <roycroft> if you live elsewhere triple the price
[22:00:50] <renesis> i guess shipping is fucked
[22:01:12] <CaptHindsight> House of Kolor is nice
[22:01:21] <zeeshan> a bit expensive though :/
[22:01:30] <zeeshan> metallic black was like 500 for a gallon
[22:01:37] <zeeshan> another 500 for clearcoat
[22:01:38] <CaptHindsight> now I make my own
[22:01:45] <roycroft> there was an 8" thick 24"x36" starrett surface plate with a starrett stand on cl here for $300 recently
[22:01:49] <roycroft> i wish i had room for it
[22:01:56] <CaptHindsight> ouch, I need to sell in Canada
[22:01:57] <renesis> neat
[22:02:00] <roycroft> and a way to unload it off my truck
[22:02:10] <roycroft> i have an 18"x24" surface plate
[22:02:11] <zeeshan> capt some of house of kolors candy colors
[22:02:17] <zeeshan> are easily 3000 bux a gallon!!
[22:02:20] <zeeshan> its CRAZY
[22:02:22] <roycroft> i have a 12"x18" one as well
[22:02:27] <zeeshan> even in the US.
[22:02:37] <CaptHindsight> why I make my own
[22:03:10] <LeelooMinai> Hmm, but seriously - is there something weird in Canada when it comes to that fiberglass resin or you were joking? :)
[22:03:49] <zeeshan> LeelooMinai: .. google!
[22:03:49] <zeeshan> http://www.canadiantire.ca/en/automotive/auto-repair-tools/auto-tools-accessories/bondo-resin-repair-kit-1-l-0475824p.html?utm_campaign=bazaarvoice&utm_medium=Default&utm_source=AskAndAnswer&utm_content=Default
[22:03:54] <renesis> it might be controlled for health reasons
[22:04:00] <zeeshan> renesis: no
[22:04:05] <zeeshan> its available everywhere
[22:04:09] <CaptHindsight> http://www.marineoutfitters.ca/index.cfm?category=10060|10075|10699&product=27189131&code=811343012595
[22:04:23] <roycroft> just do what every other canadian does
[22:04:26] <CaptHindsight> marineoutfitters.ca
[22:04:29] <LeelooMinai> Thats' 1L for $33
[22:04:37] <roycroft> pop across the border, go to a discount auto parts store, buy some bondo and smear it on your car in the parking lot
[22:04:54] * roycroft lived in a border town for too many years
[22:04:56] <zeeshan> lol roycroft
[22:04:59] <renesis> so like, why are we using granite and resin as machine tables?
[22:05:07] <renesis> i missed that part
[22:05:17] <CaptHindsight> I need to make a video howto
[22:05:17] <roycroft> i actually like the canadians i have met in canadia
[22:05:36] <CaptHindsight> Canadia lol
[22:05:40] <roycroft> it's only the trailer park crowd who came down across the border to shop every weekend
[22:06:00] <renesis> <3 canadian border guard
[22:06:13] <roycroft> and head to the all-you-can-eat buffet
[22:06:18] <LeelooMinai> 21" x 21" x 1.5" is about 10 litres
[22:06:40] <LeelooMinai> I guess most of it will be the granite (not sure where I would get it either)
[22:06:41] <jdh> mostly gravel
[22:06:45] <jdh> home depot
[22:06:55] <jdh> yes, gravel is legal in .ca
[22:07:01] <zeeshan> no its not
[22:07:06] <roycroft> it has to be
[22:07:11] <zeeshan> they have a ban for it
[22:07:14] <LeelooMinai> It may not be - due to possibility of infants swollowing it and chocking
[22:07:15] <roycroft> once you get 150km away from the border that's all the roads are made of
[22:07:15] <zeeshan> theyre using it on the roads
[22:07:18] <zeeshan> we have too little of it
[22:07:20] <renesis> gravel can put your eye out
[22:07:21] <CaptHindsight> so figure 1.5L for resin the rest is aggregate
[22:07:24] <SpeedEvil> I've wondered about a CNC gravel packer
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[22:07:43] <LeelooMinai> cnc gravel packer?
[22:07:51] <SpeedEvil> spread out a layer of gravel over say a 10m square surface.
[22:08:08] <SpeedEvil> then the thing goes over and 3d scans every bit - picking itup and turning it over
[22:08:12] <renesis> so would be more of a robot
[22:08:29] <SpeedEvil> It then does a 3d jigsaw to arbitrary shapes
[22:08:33] <renesis> or itd be huge and portable?
[22:08:42] <LeelooMinai> SpeedEvil: If you thought about it, you have far too much time on your hands:)
[22:08:51] <SpeedEvil> I was thinking of something lightweight and tiny
[22:09:01] <SpeedEvil> It's the step on from the gravel sorter
[22:09:13] <LeelooMinai> OK, so that granite filler - what would they name it?
[22:09:21] <SpeedEvil> which takes assorted gravel on a drive, and makes pictures with it according to colour.
[22:09:30] <CaptHindsight> vision guided robotic pebble picker
[22:09:56] <renesis> you want to make gravel and resin mandelas?
[22:09:59] <renesis> thats pretty cool
[22:10:31] <LeelooMinai> I tried to find something with "granite" in it, but all I get are some coutertops
[22:10:41] <renesis> def sell that to bars
[22:10:55] <LeelooMinai> Should I grind one of those into pebbles? :)
[22:10:57] <renesis> why cant you use countertop
[22:11:15] <zeeshan> thats what i was thinking
[22:11:22] <zeeshan> and instead of t-slots just use threaded inserts
[22:11:25] <renesis> they make resin + pebble counters
[22:11:27] <zeeshan> would be easier and cheaper and less handle
[22:11:30] <zeeshan> *hassle
[22:11:31] <renesis> they make resin + random counters
[22:11:39] <zeeshan> you can go buy an offcut for like $20
[22:11:40] <CaptHindsight> http://www.homedepot.ca/product/crushed-stone-dust-25kg/958152 similar
[22:11:41] <renesis> ive seen resin filled with coiled metal chips
[22:11:46] <zeeshan> and use your cnc to drill holes in it
[22:11:52] <zeeshan> and hammer in some inserts
[22:11:52] <SpeedEvil> I've wondered about a composite maker
[22:11:53] <zeeshan> done
[22:12:12] <LeelooMinai> Crashed stone dust - lol, that sounds pretty ub-specifric
[22:12:18] <LeelooMinai> un*
[22:12:25] <SpeedEvil> LeelooMinai: talk to your builders merchant
[22:12:32] <roycroft> i think you should build a rock crusher, and smash the granite up with that
[22:12:37] <renesis> http://www.portolavalley.net/Home/ShowImage?id=94&t=635393271701670000
[22:12:39] <renesis> so sexy
[22:12:50] <roycroft> you get some nice granite pebbles/dust, plus another big machine
[22:12:51] <LeelooMinai> Or just visit local cementary with a happer and a bucket
[22:12:53] <roycroft> it's a win-win
[22:12:57] <LeelooMinai> hammer*
[22:12:57] <SpeedEvil> http://www.ebuildingsupplies.co.uk/category/granite-granite-chippings-granite-to-dust-not-decorative---see-landscape--gardening-for-/584/;jsessionid=2752A691E49781EE49F58C0001F648DE.ebs2
[22:13:07] <SpeedEvil> http://www.ebuildingsupplies.co.uk/product/6mm-to-dust-granite---bulk--jumbo-bag/1003640/
[22:13:25] <renesis> so it this to mold in t slots or something?
[22:13:38] <CaptHindsight> http://www.homedepot.ca/product/king-pea-gravel-30-kg/984853 look for a smaller version of this
[22:13:41] <renesis> why does this need to be fabbed from scratch
[22:13:41] <LeelooMinai> Yes, to make a table
[22:13:44] <SpeedEvil> you take that, and larger aggregate - say up to 50mm - and mix it in
[22:13:47] <CaptHindsight> or this with a hammer
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[22:14:15] <LeelooMinai> SpeedEvil: 50mm is a rock you can throw at someone and kill them
[22:14:30] <renesis> so youre going to make a mold with tslot profiles and pour around it?
[22:14:45] <LeelooMinai> renesis: That's a working plan for now
[22:14:53] <renesis> hardcore
[22:14:53] <LeelooMinai> With some mesh inside probably
[22:15:02] <renesis> you have ideas for getting the profiles out?
[22:15:08] <LeelooMinai> Well, this is the cheapest possibility I came up with
[22:15:21] <LeelooMinai> Yes, pneumatic hammer? :)
[22:15:24] <renesis> seems cool but i would worry about getting the profiles stuck in it
[22:15:45] <LeelooMinai> Wait, why would I want to remove them?
[22:15:49] <renesis> 2ft is a lot of surface area, the profiles prob wont be perfectly flat
[22:15:53] <renesis> oh
[22:16:10] <renesis> so youre putting in metal tslot channels and leaving them
[22:16:11] <LeelooMinai> I just want t-slots inside the table for fixing stuff
[22:16:15] <LeelooMinai> yes
[22:16:20] <renesis> okay
[22:16:22] <Nick001-shop> any info on cutting a tapered thread with G76?
[22:16:30] <CaptHindsight> http://www.planetnatural.com/product/sul-po-mag-50-lb/ look for pebble this size
[22:16:36] <renesis> hardcore, gl
[22:16:38] <jdh> I think JT had stuff to do tapered threads
[22:16:57] <Nick001-shop> link?
[22:17:04] <LeelooMinai> Hmm
[22:17:31] <LeelooMinai> http://www.homedepot.ca/product/all-purpose-gravel-30kg/958163
[22:17:37] <LeelooMinai> What exactly is "grave" made of?
[22:17:41] <LeelooMinai> gravel*
[22:17:52] <Tom_itx> depends
[22:17:56] <SpeedEvil> gravel is small crushed rock
[22:18:09] <SpeedEvil> sand is smaller crushed (or dredged) rock
[22:18:10] <LeelooMinai> Would it work too instead of granite specifically?
[22:18:19] <LeelooMinai> Or I want granite
[22:18:23] <SpeedEvil> you get gravel and sand made of all rocks
[22:18:26] <CaptHindsight> same as granite only granite has been compacted by the earths mantle over millions of years
[22:18:28] <SpeedEvil> including granite
[22:18:38] <SpeedEvil> CaptHindsight: no, it's exaclty thesame
[22:18:46] <SpeedEvil> it's just small bits of granite
[22:18:52] <CaptHindsight> oh yes it is the same
[22:18:55] <jdh> can't find anything. he should be around sometime though.
[22:19:26] <LeelooMinai> CaptHindsight: So you think that thet resin + gravel would be superior to concrete?
[22:19:35] <LeelooMinai> In waht way?
[22:19:45] <LeelooMinai> MOre crack-proof?
[22:19:55] <Nick001-shop> Thanks - I'll wait for him to appear
[22:19:58] <LeelooMinai> Less shrinkage over time?
[22:20:10] <jdh> concrete is nasty stuff
[22:20:15] <pcw_home> Tom_itx: ioport instances= number of connectors on most FPGA cards, and yes 7I90 is programmed like 5I25
[22:20:17] <pcw_home> (both have local flash storage, not dynamically downloaded bitfile from host)
[22:20:21] <SpeedEvil> Concrete is often poorly specified stuff.
[22:20:23] <jdh> it will eat your bearings eventually
[22:20:33] <CaptHindsight> yes, there is a few year long thread on cnczone if you're interested
[22:20:33] <SpeedEvil> It can- done right - be an awesome material
[22:20:38] <LeelooMinai> It will not have contact with bearings
[22:20:43] <jdh> the dust will
[22:20:48] <SpeedEvil> jdh: not if sealed
[22:20:58] <Tom_itx> pcw_home thanks, that's kinda what i thought.. just wanted to verify it
[22:21:03] <CaptHindsight> http://www.cnczone.com/forums/epoxy-granite/30155-epoxy-granite-machine-bases-polymer-concrete-frame.html?s=f36e3e1805d9dcc6ec0643ecb1e8822e
[22:21:04] <LeelooMinai> Hmm... ok, I guess I will try to find that resing for cheap... womewhere
[22:21:41] <Tom_itx> pcw_home do you still list the bit file in the ini or does it just load on startup from eeprom?
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[22:22:03] <LeelooMinai> CaptHindsight: I think I read parts of it, but then I thought it's unobtanium for me and too expensive (that epoxy granite)
[22:22:10] <CaptHindsight> http://www.users.on.net/~toby.jarrett/degas.JPG
[22:22:28] <CaptHindsight> http://www.users.on.net/~toby.jarrett/polymer_concrete.JPG
[22:22:51] <SpeedEvil> Isuspect to do it ideally, you want to vacuum mix the aggregates
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[22:23:18] <pcw_home> no bitfile specified in ini
[22:23:24] <SpeedEvil> so you can have epoxy with a large 'dust' fraction filling the spaces
[22:24:07] <Tom_itx> pcw_home i assume all the new cards will be that way
[22:24:44] <Tom_itx> what's the latest mesaflash utility?
[22:24:56] <CaptHindsight> "a single kilogram of epoxy, cost $20 or so, will give you 33kg/72lbs of epoxy concrete. In volume that's about 15 liters/4 gallons."
[22:25:09] <pcw_home> Probably mostly (excluding USB3 cards)
[22:25:11] <Tom_itx> has it made it to the zips on your site yet?
[22:25:16] <Tom_itx> probably not
[22:25:40] <LeelooMinai> CaptHindsight: Right, I just need to source it
[22:25:56] <Tom_itx> oh, also if there are multiple ucf files in the directory how to you pick which one you need?
[22:25:57] <pcw_home> The zips are ancient and unfortunately there a bug in the wheezy dist version, I would build from source
[22:26:02] <Tom_itx> from the project file?
[22:26:25] <CaptHindsight> LeelooMinai: kind of off season but check landscape supply for the pebbles/aggregates
[22:26:34] <Tom_itx> well the bit files haven't changed much..
[22:26:54] <pcw_home> yeah the 7I90 is a bit special since there are EPP,SPI,Serial/SSerial versions
[22:27:04] <Tom_itx> right
[22:27:14] <Tom_itx> can you download from the epp port?
[22:27:20] <pcw_home> so there are 4 .ucf files but there are also 4 project files
[22:27:20] <CaptHindsight> used headstones and steam hammer if you like DIY and loud noises
[22:27:30] <Tom_itx> depending on the interface
[22:27:41] <Tom_itx> sserial?
[22:27:45] <Tom_itx> can it be a slave?
[22:27:55] <pcw_home> you can re-flash via the EPP port
[22:27:55] <LeelooMinai> O, right, that reminds my of my problem with squashed limit/home switches yesterday. Somehow the axis was not able to stop fast - how is this deceleration controlled in linuccnc or hostmot or whatever? I thought the steppers could stop the exis almost in-place, no?
[22:28:00] <Tom_itx> ok
[22:28:39] <pcw_home> the sserial option is a 72 bit I/O sserial slave
[22:29:06] <CaptHindsight> LeelooMinai: also depends on how strong your motors are, screw pitch and loads
[22:29:10] <Tom_itx> the rs422 port... can it support sserial slave?
[22:29:20] <Tom_itx> or do you need to use the header io for that
[22:29:39] <LeelooMinai> I have 450oz steppers and not much load there, 5mm per rev ballscrews
[22:30:02] <Tom_itx> i've about got my bit file done for one...
[22:30:06] <LeelooMinai> But could not the stepper have some reverse power applied by the driver to stop fast?
[22:30:08] <Tom_itx> had to leave for a while
[22:30:13] <pcw_home> the RS-422 port is pinned out like a slave so would need a crossover cable to connect to a slave
[22:30:19] <Tom_itx> ok
[22:30:43] <pcw_home> ist mainly for using the 7I90 as a sserial or serial slave
[22:30:49] <LeelooMinai> Hmm, 3.72L of resin $99
[22:31:00] <LeelooMinai> PLus shipping
[22:31:11] <SpeedEvil> you want '100% solids' resin
[22:31:13] <SpeedEvil> not thinned
[22:31:36] <pcw_home> the sserial slave is built on hostmot2 so hostmot2 can grow hostmot2 appendages :-)
[22:31:46] <SpeedEvil> the cost of the resin is related of course to the fill fraction of the composite
[22:32:34] * SpeedEvil ponders a press which can press to ~30% yield strength of granite, then vacuum impregnate
[22:32:53] <CaptHindsight> how about thinned with an active solvent?
[22:33:01] <CaptHindsight> just kidding they all are
[22:33:02] <SpeedEvil> CaptHindsight: you can't get the solvent out
[22:33:06] <LeelooMinai> SpeedEvil: So they would write it's "all solids" type on the can, or do I have to find that out somehow?
[22:33:21] <SpeedEvil> LeelooMinai: I dunno the proper term
[22:33:52] <CaptHindsight> LeelooMinai: just ask me when when you find it, I make resins
[22:34:15] <SpeedEvil> CaptHindsight: neat
[22:34:21] <CaptHindsight> fiberglass boat resins are thinned with styrene
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[22:34:36] <LeelooMinai> Are there other types of resins than "fiberglass"?
[22:34:38] <JT-Shop> LeelooMinai, if your design allows the limit switches to squashed you need to change it
[22:34:55] <LeelooMinai> JT-Shop: E, no, I just needed to tune the homing speed
[22:35:05] <CaptHindsight> we refer to the 100% solids thinners as active solvents since they actively take part in polymerization
[22:35:22] <JT-Shop> yes you need to change the design so they can't be damaged
[22:35:40] <LeelooMinai> I will not smash into them on purpose:)
[22:35:49] <jdh> heh
[22:35:55] <_methods> lol
[22:35:58] <JT-Shop> it's a poor design if you can smash them
[22:36:02] <jdh> you smash them though
[22:36:04] <_methods> no one smashes into them on purpose lol
[22:36:08] <JT-Shop> lol
[22:36:13] <jdh> which is why they are made to be mounted so they don't get smashed
[22:36:19] <LeelooMinai> Well, but that was first time and me figuring linuxcnc out
[22:36:21] <JT-Shop> exactly
[22:36:27] <jdh> you are missing the point
[22:36:28] <SpeedEvil> CaptHindsight: yeah - it really depends - what's the actual property of theset resin - and is the 'thinner' free or not
[22:36:54] <LeelooMinai> jdh: No, I just don't think it's worth redesigning them.
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[22:37:20] <jdh> because you are missing the point
[22:37:37] <jdh> you can do that later though. have some spares
[22:37:59] <LeelooMinai> jdh: You are missing the point - look at all your sentences:p
[22:39:43] <JT-Shop> I have a shop full of CNC machines and none of them can smash the limit switches...
[22:40:08] <jdh> JT: that's because you tuned your homing accel :)
[22:40:22] <SpeedEvil> http://www.alibaba.com/product-detail/Epoxy-resin-CYD-128-LE-828_1628733961.html
[22:41:03] <CaptHindsight> LeelooMinai: the other problem with using concrete is that it's alkaline and doesn't play well with aluminum
[22:41:24] <LeelooMinai> RIght, that's the other reason I wanted to use steel instead
[22:41:44] <tjtr33> LeelooMinai, re concrete and machine tools http://makezine.com/projects/the-multimachine-150-12-swing-metal-lathemilldrill/
[22:41:44] <CaptHindsight> but I'be used really high strength concrete with acrylics
[22:41:45] <tjtr33> based on some very old good ideas (cast oversize holes, then fill with 'babbit' like material to exact size and allignment ( google Lucien Yeoman)
[22:42:04] <CaptHindsight> but it will cost more than epoxy and granite/stone dust
[22:42:23] <JT-Shop> LeelooMinai, use pykrete
[22:42:28] <SpeedEvil> :)
[22:42:40] <LeelooMinai> Right, will ask Mythbusters to help me
[22:42:45] <SpeedEvil> JT-Shop: at -50C it has somewhat decent properties
[22:43:04] <JT-Shop> very good material actually
[22:43:16] <LeelooMinai> I will heave seasonal table - only for winter
[22:43:16] <SpeedEvil> though I suspect it'd work better with glass fiber reinforcement for a machine
[22:43:19] <CaptHindsight> we put aluminum plugs into granite and them machine threads into them for connections
[22:45:53] <CaptHindsight> http://www.q-sys.eu/images/mechanical%20bearing%206.jpg
[22:45:57] <Tom_itx> pcw_home, can hostmot2 address sserial slaves with functions like pwmgen etc?
[22:46:18] <tjtr33> some machine base ideas http://goo.gl/OUuy44
[22:46:38] <CaptHindsight> http://i1186.photobucket.com/albums/z361/thewho33/IMG_20110917_163359.jpg
[22:46:54] <Nick001-shop> JT_Shop - got any detailed info on g33 to cut a 1/8-28 BTP pipe tread - Internal
[22:47:37] <LeelooMinai> CaptHindsight: But that was by drilling holes in granite, right? Or is it also exposy granite?
[22:48:25] <CaptHindsight> LeelooMinai: that was drilling but if you mold your own you can leave blocks in the material before it sets. then machine later after cure
[22:49:01] <CaptHindsight> either can be drilled and plugs epoxied in later
[22:49:13] <JT-Shop> Nick001-shop, just what is in the manual
[22:50:02] <Tom_itx> wind shifted out of the north and it's getting colder now
[22:50:03] <Tom_itx> rain.
[22:50:04] <LeelooMinai> CaptHindsight: Would this work? http://www.walmart.ca/en/ip/polyester-resin-1993/6000079183847
[22:50:35] <JT-Shop> Nick001-shop, you need to program X to be the correct angle from the start point
[22:50:43] <pcw_home> Tom_itx yes
[22:50:51] <JT-Shop> rain here till morning
[22:51:06] <Tom_itx> pcw_home that has the possibility to get confusing :)
[22:51:19] <Tom_itx> or are they pretty much transparrent?
[22:51:41] <CaptHindsight> LeelooMinai: yes, that's a polyester resin with some fillers, it will come with a small tube of MEKP to harden it
[22:51:58] <Nick001-shop> JT_Shop what changes the x finish point
[22:52:02] <LeelooMinai> CaptHindsight: How is it different from fiberglass resin or epoxy resin?
[22:52:30] <jdh> it smells good too
[22:53:03] <JT-Shop> you need to program a move to the start point then G33 X Z K defines the end points and pitch
[22:53:39] <CaptHindsight> LeelooMinai: that is an unsaturated polyester resin, epoxies just have more and tighter bonds than polyester
[22:53:52] <JT-Shop> beware that the pitch will be off by a millionth of an inch because K follows the drive line described by XZ
[22:54:10] <CaptHindsight> jdh: the odor is mostly from the styrene used to thin it
[22:55:00] <pcw_home> Tom_itx: currently code needs to be written by hand to export the sserial functions Eventually it might get automated
[22:55:41] <CaptHindsight> http://www1.mscdirect.com/MSDS/MSDS00001/00001941-20110811.PDF section 3 has the ingredients
[22:55:42] <Nick001-shop> JT_Shop - I see some info on NPT in the forum but it's confusing me for now. The taper is the same as BPT but its also a 55deg thread. Does g33 put the tool in the tread the same each passwithout the Q as in g76?
[22:56:22] <CaptHindsight> UNSATURATED POLYESTER, SILICA, STYRENE MONOMER
[22:56:29] <Nick001-shop> tread/thread
[22:56:31] <JT-Shop> G33 uses the index to start so yea it always starts in the same place
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[22:57:51] <JT-Shop> G76 the Q is the start and end angle
[22:57:52] <Nick001-shop> I assume I have to trig out the taper move for the Z distance also?
[22:58:00] <CaptHindsight> LeelooMinai: beware that you only have limited working time, once it it gets too thick to mix there's nothing you can do
[22:58:03] <JT-Shop> yea
[22:58:12] <CaptHindsight> except watch
[22:58:25] <LeelooMinai> CaptHindsight: MInutes?
[22:58:33] <SpeedEvil> LeelooMinai: depends on grade and temperature
[22:58:47] <SpeedEvil> up to an hour is typical for slow setting stuff
[22:59:26] <CaptHindsight> the Bondo polyester is 8 to 12 minutes
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[22:59:40] <Nick001-shop> I thought Q was a compound offset to put the cutting load mostly on one side of the tool
[23:00:02] <CaptHindsight> http://bondo.com/bondo-fiberglass-resin-401.html
[23:00:16] <JT-Shop> opps yea
[23:00:28] <LeelooMinai> I will have to make some cast - maybe from melamine like they make for concrete? Or would that bond to the resin?
[23:01:06] <SpeedEvil> somewhat
[23:01:10] <SpeedEvil> wax it and itwont
[23:01:33] <LeelooMinai> THey used olive oil:)
[23:01:39] <LeelooMinai> But that was for concrete
[23:01:44] * JT-Shop heads inside now
[23:01:45] <CaptHindsight> LeelooMinai: yes wax it
[23:02:10] <LeelooMinai> Using what? A candle? :)
[23:02:42] <SpeedEvil> that works
[23:02:48] <LeelooMinai> I have candles and skiwax
[23:02:58] <LeelooMinai> But maybe I need something more specialized
[23:03:03] <CaptHindsight> try what you have on a small area
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[23:03:14] <Nick001-shop> Is L0 effective in g33 or there's no call for it? Do I need an undercut at the end of the thread and how do I get x in a distance off the thread at the end?
[23:03:43] <LeelooMinai> Right, I should maybe make micro-table first - like 10 by 10 cm with piece of t-slot embedded
[23:05:16] <CaptHindsight> LeelooMinai: to get the hang of working with it
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[23:05:36] <LeelooMinai> Yes, sounds like a plan - what can go wrong:)
[23:06:43] <CaptHindsight> well you made all that other stuff using only a fingernail file, dull screw driver and the jawbone of a goat for tools :)
[23:07:05] <PetefromTn_> Macguymina?!
[23:07:07] <CaptHindsight> I think you're handy enough
[23:07:21] <LeelooMinai> I will make it work, yes
[23:08:25] <CaptHindsight> sometimes I start with a granite surface plate, diamond core drill holes for plugs, epoxy in plugs and the cnc the mounting holes
[23:10:34] <LeelooMinai> I considered that too, but surfacew plates are usually 3-4 inches and they weight 100lbs + with that side
[23:10:43] <LeelooMinai> size*
[23:10:49] <CaptHindsight> yes, too big for what you're doing
[23:11:38] <CaptHindsight> check craiglist for people getting rid of their old granite countertops
[23:12:00] -!- pfred1 [pfred1!~pfred1@unaffiliated/pfred1] has joined #linuxcnc
[23:12:37] <CaptHindsight> but then you'll need a wet saw to cut to size
[23:13:54] <CaptHindsight> http://www.avsforum.com/photopost/data/2202021/6/6a/6aa028b4_IMG_20130325_122811.jpeg are there any fabricators with remnants like these?
[23:15:56] <tjtr33> hmmm bondo epoxy & fiberglass roll, now THAT'd fix the damn leaky cast iron pipe i got in basement, and its available at ACE hdwr thx!
[23:17:08] <LeelooMinai> Probably the people who make grave stones:)
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[23:17:48] <CaptHindsight> tjtr33: they fix large sewer pipes like that
[23:17:50] <tjtr33> gravestones too thick, find countertop mistake
[23:18:17] <tjtr33> well i tried a few of the interweb fixes so far, this sounds better
[23:18:35] <CaptHindsight> prepreg epoxy fiberglass rolls expanded into place and then cured with UV
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[23:18:47] <CaptHindsight> cast in place pipe
[23:18:47] <tjtr33> hey a countertop sink cutout sounds good
[23:18:57] <LeelooMinai> I could engrave on the back of my granite table "At least I used it for something useful before I died" and tell them to use it on my grave after I die.
[23:19:17] <tjtr33> there ya go, re-purosed
[23:19:25] <tjtr33> +p
[23:20:02] <pfred1> why wouldn't you use concrete to fix a concrete pipe?
[23:20:09] <CaptHindsight> no rush :)
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[23:20:27] <pfred1> we'd put a rock on the lift holes
[23:20:35] <CaptHindsight> pfred1: it's done without any digging http://www.youtube.com/watch?v=Swp81X4jSDk
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[23:20:42] <pfred1> those big concrete pipes always have a hole in them so you can run a cable through them
[23:21:30] <pfred1> a pretty frigging big hole in fact
[23:22:24] <pfred1> so when we laid those we'd put a stone on the hole before we bured them
[23:22:51] <pfred1> I donno what they do here we have no stones
[23:23:12] <pfred1> but where i used to live stones in the ground was no problem
[23:23:26] <SpeedEvil> https://www.youtube.com/watch?v=2mrPwXwchSc
[23:23:41] <pfred1> heck I was on one job you could dig all day and not get a bucket of dirt for all of the stones
[23:23:55] <SpeedEvil> For when you need a really large amount of force on your axis
[23:24:08] <pfred1> that job you could walk across it and not touch the ground for all of the blasting wire we used
[23:25:05] <pfred1> every day we'd blow a ram out
[23:25:30] <pfred1> I never saw nothing like that place
[23:25:44] <CaptHindsight> pfred1: where was this?
[23:25:49] <pfred1> one whole part of the job was a solid piece of blue stone
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[23:25:54] <pfred1> oh let me find it
[23:26:29] <pfred1> http://www.vanderweil.com/resources/proj_Overlook_Hospital.jpeg
[23:26:39] <pfred1> that place is sitting on one gigantic rock
[23:27:19] <CaptHindsight> and you had to bore under it?
[23:27:29] <pfred1> well dig for the sub floor
[23:27:50] <pfred1> there is a level below the "ground" level
[23:28:00] <pfred1> we blasted it out of the side of the mountain
[23:28:43] <pfred1> it was freaking unreal I was working for an electrician there and he said dig me a trench across the floor
[23:28:55] <CaptHindsight> at least the foundation is sturdy
[23:28:59] <pfred1> I got 3 feet off the wall and i hit a rock, it went all the way across the entire ground
[23:29:16] <pfred1> so I carved a notch in it for him
[23:29:29] <pfred1> one day going like hell I got 11 feet
[23:29:39] <pfred1> that was all I could do
[23:29:56] <pfred1> solid virgin blue stone
[23:30:07] <CaptHindsight> good thing it was an hourly paid job :)
[23:30:08] <pfred1> not so much as a hairline fracture in it
[23:30:27] <tjtr33> this is black cast iron 6" diameter 100yr old house, developed pinholes. Capt's liner is good idea but really expensive despite This Old House reccomendation
[23:30:32] <pfred1> by the end of week I could bust out like these perfect cubes of blue stone
[23:30:43] <pfred1> it was pretty funny
[23:30:58] <pfred1> you get good at anything after a while I guess
[23:31:21] <CaptHindsight> you learn all the ways that don't work first :)
[23:31:39] <pfred1> yeah like that Bosch Brute he gave me to use
[23:31:49] <pfred1> all it could do was make a little puff of dust when I ran it
[23:32:00] <pfred1> whenever i wanted to take a break I'd break it out
[23:32:09] <pfred1> let it puff away
[23:32:47] <CaptHindsight> tjtr33: I'm making little robots that drive down the pipe and cure it with light
[23:32:53] <SpeedEvil> how were you actually doing itthen?
[23:32:55] <SpeedEvil> CaptHindsight: neat
[23:33:24] <SpeedEvil> CaptHindsight: filliment wound '3d' printed pipe seems an obvious next step
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[23:33:57] <pfred1> yeah I've seen that
[23:34:00] <pfred1> pipe liners
[23:34:13] <pfred1> I think they had to do it in Paris
[23:34:25] <pfred1> all of their pipes were rotten
[23:34:44] <CaptHindsight> more cost effective than digging
[23:34:59] <pfred1> meh I've dug up all kinds of stuf
[23:35:16] <pfred1> buried more i suppose though
[23:35:26] <tjtr33> CaptHindsight, make 'em look like ET with a lit up finger :)
[23:35:26] <CaptHindsight> or under roads or buildings
[23:35:33] <CaptHindsight> hah
[23:35:42] <pfred1> once i saw a hole they dug in NYC
[23:35:58] <pfred1> to this day I can't get that out of my mind it was like Mario Bros
[23:36:09] <pfred1> all of the pipes it was unreal!
[23:36:37] <pfred1> they were deep way down I donno what they had to dig up but it must have been awfully important to have goen through that kind of trouble
[23:36:54] <pfred1> all hand work digging around all of thosep ipes
[23:37:23] <pfred1> one thing I wish I had a picture of today
[23:37:45] <pfred1> but back then no one had cameras they just carried around
[23:38:17] <pfred1> today I'm plumbing my CNC machine over here
[23:38:34] <pfred1> when I made it I made sure the carraige moved real easy
[23:38:46] <pfred1> unfortunately I didn't pay much mind to things being plumb, or square
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[23:39:12] <pfred1> now it still moves really easy but one axis binds up
[23:39:21] <pfred1> go figure?
[23:41:11] <pfred1> so I'm going back and squaring it, and leveling it, and trying to make sure it still moves real easy
[23:41:31] <pfred1> if it still binds up after that I donno
[23:42:58] * pfred1 sings two out of three to himself, two out of three ain't bad...
[23:43:10] <_methods> what kind of machine?
[23:43:14] <pfred1> router
[23:43:21] <pfred1> cartesian I guess
[23:43:25] <pfred1> 3 axis
[23:43:29] <_methods> what'd you use for axes?
[23:44:00] <pfred1> skate bearings and steel angles
[23:44:08] <_methods> ouch
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[23:44:14] <pfred1> what's the problem?
[23:44:14] <_methods> GL with that one lol
[23:44:22] <pfred1> yeah GL yourself
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[23:45:53] <pfred1> I should add it binds up when I I run 180 IPM
[23:46:31] <pfred1> which with half 10 TPI threaded rod is about all I can expect to do
[23:47:44] <jdh> how does it do at 120IPM?
[23:48:18] <pfred1> hit or miss, it got worse after it bound up
[23:48:27] <pfred1> because that racked it I think
[23:48:39] <pfred1> thing twisted like a diamond
[23:49:00] <pfred1> it is dual drive and one side caught and the other didn't
[23:49:25] <pfred1> after that it was never the same
[23:49:48] <pfred1> that is why I'm tearing into it now
[23:50:14] <pfred1> I am going to have to beef up the ends now that I've seen it in action it is all still early on with it
[23:51:14] <pfred1> this whole racking issue is something I did not anticipate
[23:51:38] <pfred1> I figured it would just stall and sit there
[23:51:46] <pfred1> it has other ideas
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[23:58:15] <pfred1> wow I don't have any pictures of my machine sisnce i redid it
[23:58:28] <pfred1> I can't take any now because it is half apart
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