#emc | Logs for 2010-09-17

[00:04:45] <JT-Hardinge> dang that carbide tipped band saw blade is something else, I just cut a piece of 1/2" x 8" crs in under 30 seconds
[00:04:57] <theorb> theorb is now known as theorbtwo
[00:05:55] <Valen> JT-Hardinge: how much was the blade?
[00:06:14] <JT-Hardinge> about $120
[00:06:21] <JT-Hardinge> well worth it in my time
[00:06:31] <Valen> i'd feel so cut if i snapped it though lol
[00:06:40] <Valen> I was thinking of getting bimetal ones next time
[00:06:45] <JT-Hardinge> it will pull big curls from steel and aluminum is so fast it ain't funny
[00:06:57] <Valen> they are ~$30, the regular ones are $15
[00:07:13] <JT-Hardinge> bimetal is 200% better than cheepo's
[00:07:23] <Valen> 's what i figured
[00:07:30] <JT-Hardinge> get a vari-tooth if you can
[00:07:34] <Valen> hopefully we will be cutting stainless and titanium soon
[00:07:42] <andypugh> Possible bargain, Denford Triac in need of reassembly: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=160481943903
[00:07:54] <Valen> any of you have any advice on working titanium
[00:08:39] <Valen> (of an unknown grade ;->)
[00:08:43] <JT-Hardinge> robh works it
[00:08:47] <morficmobile> JT-Hardinge: rest machining is one thing i wish Esprit was better on.
[00:09:07] <JT-Hardinge> I've never understood what rest machining is :?
[00:09:22] <JT-Hardinge> even though OneCNC does it
[00:09:52] <JT-Hardinge> * JT-Hardinge is off to dinner guys
[00:10:31] <tom3p> it cuts the 'rest' ( remaining )
[00:10:36] <morficmobile> JT-Hardinge: you say mill a pocket for a mold, say a joystick mold, you let it rough it out with a 3/4 ball end mill or even do some z plunge roughing, then you tell it to do a semi finish with a 1/2" BEM, and it looks where it has material left and machines only there, with Esprit i get a lot of passes where it already cut material
[00:11:17] <JT-Hardinge> ok, that makes sense you only machine the "rest" of the material left to be cut
[00:11:54] <morficmobile> i would like to use this for the lathe a lot too, but i have to create features at the shoulder myself, then find out where the Z starting point will be to start cutting the angle left at the shoulder from the previous 100deg. tool
[00:13:18] <morficmobile> i do recall using "rest machining" in Gibbs a lot, and here, not really, for the 3D "surfacing" ops, it's kind of there, but there are other uses it does not even offer, or does not always create a toolpath where it should
[00:15:50] <morficmobile> i would like to make use of the cut verification stuff, allowing comparison of stock i cut to target i wanted, but it requires, how do i put it...not this computer :)
[00:24:58] <Valen> lol
[00:25:28] <Valen> morficmobile: get a dual 6 core (intel) machine and hope the cam package is multi-threaded
[00:27:51] <morficmobile> Valen: that's some aweful lot of optimism, i'd need a 64bit OS and some more RAM too, not just have more cores, and who says that intel cores are better at it than AMD cores? (but budget wise, i think i'd shoot for bulldozer cores anyway, as in "they will be out by the time there will be upgrades")
[00:28:39] <morficmobile> side aside: my machine is the last of the engineering pcs to be upgraded, where upgraded means: hand me downs :)
[00:43:23] <morficmobile> Valen: last time i heard, i think the mention was ui thread + core thread at best
[00:53:01] <morficmobile> JT-Hardinge: what do you do with onecnc, type/scope of parts?
[01:08:57] <Jymmm> JT! JT! JT! JT! JT!
[01:11:24] <morficmobile> Rudy?
[01:58:28] <Valen> intel cores are better than amd
[01:58:33] <Valen> by quite a margin
[02:05:07] <morficmobile> Valen: are they worth the extra $700 is more my idea
[02:05:53] <Valen> you can put a quad core intel togther for~$700 all up
[02:06:10] <morficmobile> Valen: and Intel *is* ahead of amd right now, no discussion, i'd like to focus on Bulldozer cores though (even if i have 6 of the plain cores)
[02:06:34] <Valen> whats a bulldozer core?
[02:07:11] <morficmobile> Valen: i was still on the hex cores, and looked at one with the same clock speed, which may or may not work based on work :)
[02:07:14] <L84Supper> Jymmm: did that file help?
[02:07:17] <morficmobile> Valen: new amd core
[02:08:10] <Valen> $700 to go to a new core in the same everything else?
[02:08:16] <Valen> bit of a rip methinks lol
[02:10:03] <morficmobile> we make an awesome team of misunderstanding each other
[02:10:32] <Valen> we are pretty good at it
[02:12:33] <morficmobile> maybe we can teach the others?
[02:14:18] <Valen> nah, wouldn't inflict that on them ;->
[02:18:12] <morficmobile> Valen: for kicks, tell me what prices you find for a amd 1090T cpu and for a same clock same # cores intel cpu
[02:20:14] <Valen> that is going to be an expensive intel
[02:21:59] <Valen> AMD $370.23 Intel $1,174.10
[02:22:27] <Valen> though actually thats a quad core intel
[02:22:28] <morficmobile> and while i agree the intel is a better chip, not sure it's $700 better to me :)
[02:22:39] <Valen> so get the $370 intel chip
[02:22:58] <Valen> for everything other than video encoding and rendering it'll be faster
[02:23:03] <morficmobile> the amd goes as low as $275 :)
[02:23:22] <Valen> this is looking in australian dollars from the same retailer
[02:23:43] <Valen> ahh a 3.33ghz 6 core intel is $1456
[02:24:35] <morficmobile> i think i rather would ask them for the amd 6 core and a lot of ram than the intel with less ram than i want
[02:25:09] <Valen> if your app isn't heavily threaded (which is what you said) your better off getting a faster clock speed at the expense of cores
[02:26:41] <L84Supper> $700 will get you 16GB of DDR3 + an SSD
[02:27:20] <Valen> you probably want a decent video card
[02:27:34] <Valen> assuming your app runs openGL or directX at worst
[02:27:55] <Valen> solidworks works better with "pro" series cards
[02:29:46] <Jymmm> L84Supper: My ancient version doens't like the DXF files, oh well. TY though =)
[02:32:42] <Valen> 1 x Intel i5 680, 3.6GHz/4MB CACHE/LGA1156 | 1 x INTEL BOXDP55WB / BLKDP55WB, S1156, uATX, P55/DDR3/Glan/1394a | 2 x Corsair 4GB (1x4GB) DDR3 1333MHz Unbuffered CL 9 DIMM Memory for AMD and Intel Core i3, i5, i7 | 1 x Palit GT220 PCI-E 512MB 128-bit DDR2, DVI, VGA, Fan
[02:32:47] <Valen> $813
[02:33:27] <Valen> 3.6Ghz worth of dual core speed
[02:33:37] <Valen> thats australian dollars btw
[02:34:02] <Valen> so around 50 cents us
[02:34:40] <L84Supper> 1 Australian dollar = 0.9355 US dollar
[02:34:54] <Valen> today ;-P
[02:35:20] <Valen> somewhere like bestbuy is going to give you the same setup a fair bit cheaper
[03:04:56] <Connor2> Question, my screws and everything are metric... is there a way to run the G-Code in imperial? I know I can get it to show the values in it.. but.. the g-code still takes it in mm
[03:05:35] <Valen> you specify the units with a g code
[03:06:03] <Valen> keep in mind you will need to change all the dimensions in the code into imperial too
[03:06:24] <Valen> yeah G20 vs G21
[03:07:08] <Connor2> Which is which?
[03:07:17] <Valen> cant rember
[03:07:38] <Valen> lhttp://www.linuxcnc.org/docview/html/gcode.html
[03:08:00] <Connor2> G20 is imperial
[03:09:41] <Connor2> kick butt.. I did a test with the spiral code this afternoon... (using a pencil held to the Z with a clamp) came out really good for the very first time..
[03:17:15] <Connor2> how do you scale a axis if it says it's out of range?
[03:20:06] <Valen> you dont
[03:20:16] <Valen> you work out why its out of range and fix it
[03:20:39] <Connor2> It's out of range because my machine won't go that far.. (Z) I just want to make it shorter..
[03:20:46] <Connor2> one of the examples...
[03:22:43] <Valen> change the g code
[03:23:58] <Valen> EMC wont scale things
[03:24:17] <Valen> unless you change your distance per step or whatever
[05:22:11] <Jymmm> L84Supper: you still here?
[05:24:04] <L84Supper> almost
[05:24:28] <Jymmm> L84Supper: Easy one... where do you set the DEFAULT decimal precision?
[05:26:48] <L84Supper> in SW? It's changed so much over the years
[05:27:02] <Jymmm> oh, ok I'll keep looking =)
[05:27:05] <Jymmm> ty
[05:30:09] <L84Supper> try Document Properties
[05:31:06] <L84Supper> then Dimensions
[05:31:57] <L84Supper> this is after you open a new part
[05:32:34] <L84Supper> default is probably to 2 decimal places
[05:32:45] <Jymmm> it is, I need 4
[05:32:56] <Jymmm> just tored of changing it
[05:32:59] <Jymmm> tired
[05:34:07] <Jymmm> L84Supper: Ah, you have to create a new part template, then use it
[05:35:05] <L84Supper> yeah start a new part or create a template
[05:35:39] <Jymmm> I created a new template with .1234 then set it as the default template.
[05:35:55] <L84Supper> that should work
[05:35:57] <Jymmm> L84Supper: TY =)
[05:36:30] <L84Supper> yikes i have to be up in a few hours
[07:12:48] <PCW_> PCW_ is now known as PCW
[09:21:45] <IchGuckLive> Hi all from germany
[09:34:50] <alex_joni> hi
[09:38:36] <micges_work> hi
[10:37:06] <jthornton_> jthornton_ is now known as jthornton
[11:15:13] <skunkworks> http://www.cnczone.com/forums/showthread.php?t=112180
[11:16:27] <jthornton> sounds fuzzy to me :)
[11:18:02] <skunkworks> :)
[11:18:12] <skunkworks> Wow - it is too early
[11:18:59] <MattyMatt> good morning, machinators
[11:19:13] <jthornton> I hope it is dry enough to dig in the dirt today
[11:21:59] <MattyMatt> could be the last sunny day here. I should do a cementing job for a friend
[11:23:00] <MattyMatt> strong south wind last few days. today could be a lull before it all back from the north
[11:26:26] <MattyMatt> is there an alternative "fuzzy" approach to PID ? could that guy in fact insert his own filter in there?
[11:28:52] <MattyMatt> ah, if you can answer that, I'm too uninformed to understand the answer. I've never used servos
[11:31:56] <MattyMatt> fuzzy logic to me implies oversample averaging and outlier rejection
[11:32:34] <MattyMatt> fuzzy logic for fuzzy encoders
[11:32:42] <SWPadnos> and fuzzy parts
[11:43:47] <jthornton> will that make fuzzy dice that hang from the mirror?
[11:45:44] <SWPadnos> that may depend on cooling (or lack thereof)
[11:56:39] <MattyMatt> hmm if it does turn to winter next week, maybe I'll have more success milling this delrin with no coolant
[11:58:08] <MattyMatt> that'll give me a straw to cling to if todays attempt doesn't work
[12:00:47] <MattyMatt> circuit coolant spray would probably work here, that's a bit expensive these days tho :)
[12:13:28] <Valen> personally I'd like to see how a neural net would do at running the mill
[12:13:32] <jthornton> machining delrin = razor sharp tools and big chips
[12:14:49] <alex_joni> Valen: initially crappy :D
[12:15:29] <SWPadnos> a neural net trajectory planner would be interesting, but I'm not so sure it would be a win at the motor control side (ie, replacing PID)
[12:15:50] <Jymmm> UG! UG! UG!
[12:16:08] <SWPadnos> since the path to take is a little fuzzy (there are multiple variables, so the "best" solution is dependent on the situation)
[12:16:29] <Jymmm> Fuzzt Logic
[12:16:32] <Jymmm> y
[12:16:36] <SWPadnos> BZZZZT!! logic
[12:17:28] <Jymmm> Bumble Bee Logic?
[12:43:20] <jthornton> I asked a technical question at Maritools and Frank Mari answered that same evening after business hours!
[12:43:46] <Jymmm> jthornton: Maritools?
[12:44:04] <jthornton> I get my BT30 tool holders and ER collets from them
[12:44:13] <Jymmm> ah
[12:44:29] <jthornton> http://www.maritool.com/
[12:44:43] <Jymmm> jthornton: Are you trying to cut delrin?
[12:44:53] <jthornton> not today
[12:45:31] <Jymmm> jthornton: PM?
[12:45:37] <jthornton> ?
[12:56:02] <Jymmm> Hey SWPadnos, LTNS
[12:56:10] <SWPadnos> indeed
[12:56:21] <SWPadnos> (silly SeaMonkey updates)
[12:56:43] <Jymmm> they forced an update?
[12:57:04] <SWPadnos> no, but it had been downloaded already, so it was too easy to hit the "restart SeaMonkey now" button
[12:57:12] <Jymmm> lol
[12:58:56] <Jymmm> SWPadnos: Your suitcase unpacked for a while?
[12:59:03] <SWPadnos> ~24 hours
[12:59:25] <Jymmm> LOL, oh gawd
[12:59:25] <SWPadnos> I arrived home from Dallas last night, and I head to Germany tomorrow.
[12:59:45] <Jymmm> Octoberfest in September?
[12:59:48] <SWPadnos> but I (probably) get to stay home for a whole week once I get back
[12:59:50] <SWPadnos> nope
[13:00:16] <Jymmm> Bet the Mrs is envious
[13:00:25] <SWPadnos> (then it's off to Dallas again, then Toronto again, then probably New York again, and then maybe Bogota, then ...)
[13:00:33] <SWPadnos> um, that's not quite the adjective I'd use
[13:01:13] <Jymmm> Pissed? You have your name engraved in stop above the dog house, but don't have a dog?
[13:01:20] <Jymmm> s/stop/stone/
[13:01:40] <SWPadnos> as the guy I sat next to yesterday said, it's like I have an airplane strapped to my ass
[13:02:11] <Jymmm> lol
[13:03:22] <Jymmm> SWPadnos: So, whats in DE ?
[13:10:12] <SWPadnos> http://www.photokina-cologne.com/
[13:11:51] <Jymmm> For a "World of Imaging" based website, where are the images?!
[13:12:01] <Jymmm> FAIL!
[13:12:22] <SWPadnos> you have to attend to see the images :)
[13:12:48] <Jymmm> Even the video sucks... http://www.photokina-cologne.com/thefair/
[13:14:01] <SWPadnos> I go for the new technology, not the photo exhibit
[13:14:45] <Jymmm> Are you going to demo 360?
[13:14:58] <SWPadnos> nope, just attending - not exhibiting
[13:15:07] <SWPadnos> it's not the right show for a demo
[13:15:33] <Jymmm> SWPadnos: Really? Is there something specific your looking to see?
[13:15:43] <SWPadnos> we've got a list of things to look for
[13:15:52] <Jymmm> we?
[13:17:10] <SWPadnos> yeah, I'm going with the owner of the 360 rig
[13:17:37] <Jymmm> Oh, is he flipping the bill ?
[13:17:52] <Jymmm> Is he looking to expand into EU Market?
[13:18:02] <SWPadnos> most of it. I like to go to this show anyway to keep in touch with my photo industry friends
[13:18:18] <SWPadnos> plus my sister in Berlin just had a baby, so I'll be visiting her for a couple of days as well
[13:18:18] <Jymmm> Oh, you've been to that show before?
[13:18:32] <SWPadnos> yeah, every time since 2000 or so
[13:18:41] <SWPadnos> so I guess this will be number 6
[13:18:52] <Jymmm> Ah. Uncle SWPadnos
[13:18:55] <SWPadnos> or 7, maybe it was since '98
[13:19:04] <SWPadnos> yeah, only like the 20th time
[13:19:25] <Jymmm> Get em a TV
[13:19:28] <SWPadnos> heh, it is number 20
[13:19:31] <SWPadnos> too funny
[13:20:20] <SWPadnos> oh no, 17. I counted one set of 3 twice
[13:20:30] <Jymmm> LOL
[13:20:34] <SWPadnos> anyway, a lot of nieces and nephews
[13:20:55] <Jymmm> Yeah, no doubt, LOTS OF TV's to give away
[13:21:31] <SWPadnos> nah, most of them {don't,aren't allowed to} watch TV
[13:21:36] <Jymmm> Well, *FINALLY* found activated carbon locally, ordered it yesterday.
[13:21:41] <Jymmm> That's the problem! LOL
[13:22:48] <SWPadnos> oh - right. get the *adults* a TV ;)
[13:23:03] <Jymmm> EXACTLY!
[13:23:24] <SWPadnos> nah. it doesn't matter much. only one nephew lives close enough to be annoying ;)
[13:23:32] <Jymmm> LOL
[13:24:41] <Jymmm> Think these are right to mount a Dust Colletctor on to dampen noise? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250643818660&ssPageName=STRK:MEWAX:IT
[13:25:06] <SWPadnos> hey, have you looked into felt for the sound dampener thing?
[13:26:24] <Jymmm> SWPadnos: What I did is get one of these http://www.homedepot.com/h_d1/N-5yc1vZ1xgl/R-100342585/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053 and tossed the DC in a piece of carpet on the bottom of it as a test.
[13:27:00] <Jymmm> With the lid on it drowned it down to the level of a cheap 20" box fan on high.
[13:27:10] <SWPadnos> oh. not bad
[13:27:15] <Jymmm> Reasonable for a office
[13:27:25] <SWPadnos> I'm actually looking for felt sheets, so I was wondering if you had researched it at all
[13:27:32] <Jymmm> thickness?
[13:27:40] <Jymmm> for sound proofing?
[13:28:12] <SWPadnos> padding
[13:28:24] <Jymmm> So I figure that if a 1/8" HDPE trashcan can reduce the level, 3/4" MDF should be able to do a far better job.
[13:28:29] <Jymmm> padding for?
[13:28:33] <SWPadnos> cameras
[13:28:39] <Jymmm> transport?
[13:28:43] <SWPadnos> yep
[13:28:47] <Jymmm> why felt?
[13:28:54] <SWPadnos> felt or foam would work
[13:29:20] <SWPadnos> I just noticed a thick piece of felt on a chair when I got home, which had been used for shipping a brailling machine
[13:29:25] <SWPadnos> it looked like just the thing
[13:29:27] <Jymmm> foam I can get you. There is a special foam used specifically for cameras as the outgas will not harm the coating on the optics
[13:29:39] <SWPadnos> open cell or closed?
[13:29:51] <Jymmm> It looks closed cell
[13:29:59] <Jymmm> it's somewhat dense.
[13:30:05] <SWPadnos> ok. I'm thinking the thickness might be 1/2 - 1"
[13:30:08] <SWPadnos> cool
[13:30:11] <skunkworks> cradek: My coworker plugged the other end of the network cable into the wan port of a wireless router. Everything is working now :)
[13:30:58] <Jymmm> SWPadnos: http://www.bobsfoam.com/
[13:31:06] <Jymmm> SWPadnos: I love that place
[13:31:16] <SWPadnos> heh
[13:31:17] <Jymmm> SWPadnos: Mention it's for camera gear
[13:31:59] <Jymmm> SWPadnos: and yes, Bob does look like that too =)
[13:32:03] <SWPadnos> heh
[13:32:07] <SWPadnos> any prices?
[13:32:27] <Jymmm> very reasonable, unless you get into the "memory foam"
[13:32:36] <Jymmm> super nice
[13:32:38] <SWPadnos> that would be cool, but is probably unnecessarty
[13:32:40] <SWPadnos> -t
[13:32:59] <Jymmm> do you need to make inserts?
[13:33:21] <SWPadnos> the thing I'm concerned about is that we'll want to remove and replace the cameras a lot, so it has to be wear resistant
[13:33:45] <SWPadnos> I don't think so, flat foam on the wooden carriers we have would work fine
[13:34:06] <Jymmm> Talk to them, very knowledgable. they are the ones that told me about the coating outgassing
[13:34:15] <SWPadnos> yep
[13:34:56] <Jymmm> I think felt would leave a lot of particals
[13:35:03] <Jymmm> and not wear resistant
[13:35:51] <SWPadnos> it seems pretty tough
[13:35:51] <Jymmm> SWPadnos: 1/8" thick blade http://www.harborfreight.com/130-watt-heavy-duty-hot-knife-66182.html
[13:36:05] <SWPadnos> like the stuff they use in cars - firewall and under the carpet
[13:36:11] <Jymmm> SWPadnos: but cheap enough
[13:36:32] <Jymmm> The stuff that rarely ever gets handled or touched you mean? =)
[13:36:44] <SWPadnos> it gets stomped all the time
[13:36:54] <Jymmm> it's sandwiched
[13:37:42] <Jymmm> SWPadnos: you going to make pockets?
[13:38:32] <SWPadnos> nope, just stick it to the wooden sides/bottom
[13:39:36] <Jymmm> SWPadnos: You can get a can of their spray adhesive. Specifically designed for foam, slightly price but sticky as hell till it dries and can be used to adhere foam to itself or other substrates
[13:40:29] <Jymmm> I think I pait like $8 a few years ago, might be able to use Super 77, but not sure.
[13:40:48] <SWPadnos> I'll point them at Bob's. thanks for the link
[13:41:01] <Jymmm> yw
[13:41:56] <SWPadnos> ok, work time now. see you
[13:41:58] <Jymmm> SWPadnos: OH, check out what I found... http://www.homedepot.com/h_d1/N-5yc1vZ1xgl/R-100671772/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053
[13:42:31] <Jymmm> It's recycled rubber, so instead of solid, it has "pits" in it.
[13:43:01] <Jymmm> very heavy, and soft
[13:43:12] <Jymmm> 2x3 and 4x6 ft sizes
[13:43:49] <Jymmm> Even the cross hatch pattern is the same as acoustic material
[13:44:20] <Jymmm> You can even use it a grip material for hand routing
[13:44:45] <Jymmm> I couldn't get a thing I placed on it to slip
[13:45:20] <SWPadnos> cool
[13:46:04] <Jymmm> SWPadnos: I'm concerned about fire hazard in the air scrubber, thus not wanting felt or other easily ignited materials
[13:46:22] <Jymmm> SWPadnos: Figure I could cut and glue the rubber mat inside the chamber if needed
[13:47:39] <Jymmm> SWPadnos: "Acoustic foam can be used on the face of a wall or ceiling to reduce reverberation (echo), or inside a wall to damp cavity resinance. Such treatments must be fireproof to avoid disasters such as The Station nightclub fire which killed 100 in 2003."
[13:52:58] <skunkworks> Y axis adaptors... http://electronicsam.com/images/KandT/conversion/yaxis/adaptors.JPG
[13:53:20] <Jymmm> you used mastik?
[13:53:49] <Jymmm> I know it's stick y and all, but....
[13:54:39] <Jymmm> skunkworks: Dude, you need a blaster =)
[13:54:50] <skunkworks> and panduit?
[13:55:03] <skunkworks> we have both - we just don't use them. ;)
[13:55:06] <Jymmm> No panduit, just an abrasive blaster
[13:55:14] <Jymmm> goober!
[13:56:21] <skunkworks> dad bored out about 23lbs of cast from the adaptor. still heavy
[13:56:41] <Jymmm> ya think? =)
[13:58:29] <skunkworks> the thing sticking out of the left side is the hydralic brake so y stays up without power.
[14:24:50] <Jymmm> cool
[14:26:56] <skunkworks> *hydraulics disengages the brake - springs hold it with no power.
[14:27:17] <Jymmm> big ass springs =)
[14:27:44] <Jymmm> like drum brakes on a car?
[14:29:00] <skunkworks> na - it doesn't take much
[14:29:12] <skunkworks> valvespring size I suppose
[14:30:34] <Jymmm> ah
[14:34:46] <skunkworks> band brake
[14:57:46] <Jymmm> Whats a good way to run a power cord thru the wall of an air tight container without permanently (silicon/spray foam) sealing it?
[15:02:16] <Connor> hey, why doesn't the Jog Speed for deg/min work?
[15:02:25] <Connor> or, rather, what's the deal with it...
[15:11:33] <skunkworks> Jymmm: something like this - most hardware stores have them http://www.rppdist.com/fittings/romex.htm
[15:13:14] <Jymmm> I have some of those for round cable, but they ar not air tight, nor will they allow the plug to pass thru.
[16:26:46] <tom3p> \=][09\
[16:27:01] <tom3p> scusa :(
[16:34:38] <seb_kuzminsky> hey folks, how do you feel about reaming blind holes? am i asking for trouble?
[16:37:33] <tom3p> its common, but make sure you have a flat on the pin or a jack screw ( else hard to get dowel in or out )
[16:38:23] <seb_kuzminsky> because the pin will make an air lock with the hole, i understand
[16:38:24] <seb_kuzminsky> thanks!
[16:39:45] <tom3p> the reaming is no big problem, avoid bottoming the reamer, it'll screw up the bore
[16:39:54] <seb_kuzminsky> sure
[16:40:04] <seb_kuzminsky> i'll pre-drill a bit deeper than i need the reamer to go
[16:56:24] <cradek> seb_kuzminsky: making something fun?
[16:57:10] <seb_kuzminsky> http://garagegunsmithing.com/index.php?option=com_jfusion&Itemid=54&jfile=viewtopic.php&f=22&t=371
[16:57:14] <seb_kuzminsky> but with cnc ;-)
[16:58:37] <seb_kuzminsky> i put my gcode here: http://github.com/SebKuzminsky/ar15
[16:59:15] <cradek> wow that's a lot of complicated setups
[16:59:41] <seb_kuzminsky> it's an awkward shape for holding
[17:00:01] <seb_kuzminsky> i've modified the fixture plates so i can work in the vise more, we'll see how it goes...
[17:00:15] <cradek> how many are you making?
[17:00:33] <cradek> you have these same castings or are you cutting it from solid?
[17:00:36] <seb_kuzminsky> i'm making one, and i'm working with some friends who are also making one each
[17:00:51] <seb_kuzminsky> i'm starting with the castings from dsa: http://www.dsarms.com/AR15-Lower-Receiver-7075-T6-Alloy-Forging-Military-Spec---1001/productinfo/1001/
[17:01:29] <cradek> looks like an interesting and challenging machining project, but I don't know what I'd do with one...
[17:01:30] <seb_kuzminsky> hm, enco says to not use straight-flute reamers in blind holes
[17:01:59] <SWPadnos> there's nowhere for the swarf to go
[17:02:03] <atmega> make two, I'll take one.
[17:02:06] <seb_kuzminsky> yeah it's kind of a goofy gun
[17:02:34] <cradek> if you can make it plenty deep, it wouldn't matter
[17:03:03] <cradek> you should certainly experiment your reaming on scrap
[17:03:12] <seb_kuzminsky> yeah...
[17:03:34] <cradek> ouch, I just used experiment transitively
[17:03:57] <cradek> bbl, I better go have lunch before I get into trouble
[17:04:03] <seb_kuzminsky> enco only carries straight-flute reamers
[17:04:23] <atmega> cradek: I kind of liked it.
[17:04:32] <tom3p> nice work
[17:05:03] <cradek> you might try making a reamer by rounding off the corners of a decently on-sized drill
[17:05:38] <seb_kuzminsky> hmm, make a reamer, crazy talk
[17:05:43] <seb_kuzminsky> you better get some lunch! ;-)
[17:05:49] <cradek> ha
[17:06:44] <tom3p> anyone used orbital drilling? interested in the mechanisms inside this http://www.novator.eu/Video_Drilling_in_CFRP.asp
[17:17:56] <seb_kuzminsky> y'all know what's coming next
[17:18:24] <seb_kuzminsky> anyone have any coupon codes for enco and msc? i have the RetailMeNot ones
[17:20:02] <SWPadnos> MSC: WEB25 (save 25% on orders over $149)
[17:20:07] <SWPadnos> err, "up to 25%"
[17:20:25] <seb_kuzminsky> that's pretty good
[17:23:22] <seb_kuzminsky> yeah that makes msc cheaper than enco, and they have the rhc/rhs reamers for blind holes
[17:23:42] <SWPadnos> if it's actually 25% on that stuff, rather than "up to" ...
[17:23:56] <SWPadnos> argh. bbl
[17:24:43] <skunkworks> that didn't sound good...
[17:25:05] <SWPadnos> just too much stuff to do
[17:25:23] <seb_kuzminsky> yeah, that code at msc gave me 25% off the entire order :-)
[17:25:27] <seb_kuzminsky> thanks SWPadnos!
[17:25:29] <skunkworks> seb_kuzminsky: http://www.youtube.com/watch?v=QU_O_Z7Vv8c
[17:25:38] <skunkworks> (don't know if you saw that)
[17:25:50] <seb_kuzminsky> i saw it, super cool
[17:26:08] <seb_kuzminsky> that's a big machine :-)
[17:26:17] <seb_kuzminsky> when will you show us the first chips? :-)
[17:26:25] <skunkworks> few weeks - I think
[17:26:29] <skunkworks> vfd works
[17:26:47] <skunkworks> have to mount a encoder on the spindle motor for shifting.
[17:27:32] <seb_kuzminsky> nice, msc code mrff910 applied on top of web25 and gave me free shipping :-)
[17:29:13] <IchGuckLive> Hi all from Germany
[17:29:35] <seb_kuzminsky> hi IchGuckLive
[17:29:51] <IchGuckLive> B)
[17:31:02] <seb_kuzminsky> see y'all later
[17:31:42] <tom3p> skunkworks, are those roller box ways? nice work too.
[17:38:48] <skunkworks> tom3p: yes. little to no stiction. :)
[17:40:01] <skunkworks> tom3p: runs on something like this http://electronicsam.com/images/KandT/conversion/tikkoway.JPG
[17:45:29] <IchGuckLive> skunkworks: heavy equipment
[17:46:53] <tom3p> nice, big tractors, should run for another hundred years
[17:48:50] <skunkworks> tom3p: hope so ;)
[19:26:20] <JT-Hardinge> skunkworks: nice
[19:26:40] <JT-Hardinge> I just fried another coolant pump :/
[19:32:21] <skunkworks> JT-Hardinge: yeck - why?
[19:44:20] <JT-Hardinge> sump too shallow for a submersible pump, at least that is my theory for pump #2
[19:45:04] <JT-Hardinge> running submersible pump out of water for ANY length of time is my theory for pump #1
[19:45:16] <JT-Hardinge> #3 is a non-submersible :)
[19:50:09] <skunkworks> heh
[19:51:58] <JT-Hardinge> kida what I said
[19:52:29] <JT-Hardinge> you get the spindle on the K&T going?
[19:55:43] <skunkworks> I have the spindle vfd running - we have to re-route the wire to the spindle so it is out of the way.
[19:56:29] <skunkworks> The last bit to actually try the 16gearshift comp is to mount an encoder on the spindle motor
[19:56:37] <JT-Hardinge> what kind of tooling does that monster use?
[19:57:03] <skunkworks> it is their own. Strait shank (2.somehting in diameter)
[19:57:16] <skunkworks> we got a ton of it when we got the machine.
[19:59:26] <skunkworks> it looks similar to this (this is the newer smaller tooling)
[19:59:27] <skunkworks> http://cgi.ebay.com/Kerney-Trecker-Tap-Collet-Chuck-/230504753391?pt=BI_Tool_Work_Holding&hash=item35ab2768ef
[20:00:11] <robh__> anybody converted a old Fanuc machine with fanuc DC Servos yet? see alot of people talk of it but wundering what they did about a tacho feedback..
[20:00:39] <cradek> robh__: check the mailing list for my results regarding generated tach signal
[20:01:14] <robh__> motors have a 2500ppr encoder, how well do you think it would work with such a low encoder?
[20:01:18] <cradek> (assume you're talking about a machine where the control makes a tach signal for the amps and there are no real tachs)
[20:01:20] <robh__> motors are direct drive
[20:01:27] <robh__> cradek, correct
[20:02:11] <robh__> so i have 10000ppr in quad mode to play with, unless i changed the encoders
[20:02:12] <cradek> my experience says it'll work perfectly fine if you use mesa/hostmot2
[20:03:02] <robh__> i think amps take a 3v/1000rpm tacho so it should go down low on its tacho input will have to see how low i can get it
[20:03:25] <cradek> yeah if you can get it down to +-10 you'll be fine
[20:03:28] <cradek> mine had no trouble at all
[20:03:53] <cradek> but beware my amps are NOT fanuc
[20:03:55] <robh__> wish i had a drive manual
[20:04:30] <robh__> well i find yaskawa,fanuc,mitshi are all pritty much 1:1 around them times all copyed each other
[20:05:31] <robh__> 7I48 support in master
[20:07:02] <robh__> its just the fanuc motherboard powersupply died today, so its a case of what todo.. and we all know fanuc price
[20:10:27] <cradek> yes 7i48 is a really good deal
[20:11:39] <robh__> ill ask fanuc in morning see what amps will go down to.. thx cradek
[20:20:57] <skunkworks> cradek: because I aways ask - I think I may try the at_pid set for P,I and FF1 tuning. just for grins.
[20:22:00] <cradek> robh__: I was quite prepared to add/change a resistor to get mine to work if necessary - I have a rough schematic of the input section. turns out it was not necessary.
[20:22:26] <cradek> sadly for some reason I can't find my emails about that on gmane.
[20:22:42] <cradek> skunkworks: that's ... brave
[20:22:45] <skunkworks> heh
[20:24:28] <robh__> i rang fanuc the other day to ask about drive pinouts etc, they where very helpfull, so they should let me know what i can and cant do, will keep you all posted what i do..
[20:25:34] <robh__> not too sure if i will do the machine that has died, or change parts over and do the other VMC yet
[20:27:43] <skunkworks> robh__: what are they?
[20:29:35] <robh__> one is a Leadwell again, but a 750mm X table with carousel, bigger version that i already done
[20:30:16] <robh__> other is a dahlih with random changer, and two speed gearbox 750x again
[20:31:03] <robh__> which is the one that decided to not play ball today
[20:31:23] <skunkworks> yeck
[20:32:03] <robh__> we was going todo them both, just not yet lol
[20:33:17] <robh__> all fun and games i guess
[20:37:51] <skunkworks> This is the re-write of the spindle shift comp so far. http://pastebin.ca/1943091
[20:37:58] <skunkworks> pretty basic
[20:38:36] <robh__> well you should have no problem finding the right gear to use
[20:47:57] <skunkworks> other than our top limit will be about 3000rpm :)
[20:50:25] <MattyMatt> happy joy. stepconf does XYZA. that's a headache averted. If I don't change the kinetics or co-ord system, can I just rotate the A motor in G1 moves and keep XYZ in machine co-ords?
[20:50:56] <cradek> xyzu would be much more sane
[20:51:45] <MattyMatt> I agree, that was my first guess before I found out they're called abc
[20:53:07] <MattyMatt> being able to declare all the unused alphabet (& unicode?) would be neat for things like reprap emulation
[20:53:45] <cradek> not sure what you mean - you do know that U is another linear axis that emc supports?
[20:54:03] <skunkworks> there is xyzabcuvw
[20:54:08] <MattyMatt> o'rly? oh sorry I didn;t :)
[20:54:09] <cradek> xyzuvw are linear, abc are rotary
[20:55:01] <MattyMatt> A is actually rotary along X axis, but I'd rather not deal with the frame rotating with the motor
[20:56:30] <MattyMatt> I just intend to cut a tooth, rotate etc
[21:06:04] <MattyMatt> well, I'll find out tomorrow. if stepconf writes in the A ini I can hack it to U if necessary
[21:08:40] <MattyMatt> I got my delrin tubes made without meltage. I was a bit out of breath at the end being Mr Human Aircompressor
[21:10:29] <MattyMatt> the chips were welding where they landed if I left them 2 seconds
[21:12:48] <MattyMatt> I'm making these cogs in aluminium in future
[21:14:06] <JT-Hardinge> MattyMatt: no photos?
[21:15:24] <MattyMatt> I'll go take one now of the tubes, but I won't post it until tomorrow when I've got one of my 4th Axis lashup :)
[21:16:40] <MattyMatt> I'll probably just put the motor in the vice
[21:18:52] <MattyMatt> right, so I need longer wires on the motor and I'm set. it's a good job this cog has a factor of 200 teeth, all my proper 4th axis plans have high gear ratios
[21:35:58] <ries_> ries_ is now known as ries
[21:47:20] <alex2> alex2 is now known as Guest46533
[21:50:24] <Guest46533> Guest46533 is now known as alex_chally
[21:50:48] <alex_chally> I seem to be blowing fuses for some reason...
[21:54:56] <JT-Hardinge> there is always a reason...
[21:59:18] <alex_chally> JT-Hardinge, I am drawing out an actual circuit diagram before i ask any silly questions :D
[22:02:55] <JT-Hardinge> I always ask silly questions first just to get them out of the way :)
[22:15:58] <alex_chally> hmm
[22:16:06] <alex_chally> so I am pretty sure it is a grounding issue
[22:18:52] <alex_chally> the secondary of my transformer should use the same ground for ref as the primary, correct?
[22:19:46] <alex_chally> that is, if I measure the voltage between the live on the secondary coil and the neutral on the primary, it should read the same as measuring from the live on the secondary to the neutral on the secondary
[22:19:59] <alex_chally> errr
[22:20:03] <alex_chally> yeah
[22:38:58] <alex_chally> annnnnnd blew up a motor driver
[22:38:59] <alex_chally> -_-
[22:41:43] <JT-Hardinge> oh, your making a driver... what fun
[22:45:16] <alex_chally> no
[22:45:27] <alex_chally> but I did manage to make flames come out of it
[22:47:48] <JT-Hardinge> that's not good
[22:50:05] <alex_chally> no, not really. $115 up in smoke
[22:50:14] <alex_joni> any smoke?
[22:50:15] <alex_chally> also, remember to wear safety glasses when testing industrial electronics kids
[22:50:19] <alex_chally> alex_chally, oh yeah
[22:50:23] <alex_chally> and looots of fire
[22:50:28] <alex_chally> probably a 3" jet of flame
[22:50:32] <alex_joni> fire is not a big problem
[22:50:35] <alex_joni> smoke is..
[22:50:44] <alex_chally> looks like I accidentaly smoked out the mosfets
[22:50:47] <alex_joni> it's magic smoke.. once it's out, you can't put it back in there
[22:50:50] <alex_chally> blew the traces straught off
[22:51:03] <alex_chally> straight
[22:51:19] <JT-Hardinge> too much pressure!
[22:51:24] <alex_joni> had a similar thing happen to me the other day
[22:51:33] <alex_joni> on a 400A welding power source
[22:55:25] <alex_chally> http://www.flickr.com/photos/33383121@N04/4999327603/
[22:57:05] <JT-Hardinge> alex_chally: did you put the current limit resistor in?
[22:57:34] <alex_chally> JT-Hardinge, ?
[22:57:54] <JT-Hardinge> which gecko drive it is?
[22:58:12] <alex_chally> 320x
[22:58:13] <alex_chally> er
[22:58:14] <alex_chally> 320
[22:58:15] <alex_chally> no x
[22:58:32] <JT-Hardinge> oh, I don't know about them
[22:58:49] <JT-Hardinge> no heat sink?
[23:00:50] <alex_chally> there is a heat spreader that is attached to those mosfets, and when running I am going to have an old P4 cpu fan/heatsink on that spreader
[23:01:10] <alex_chally> you can obviously ssee the thermal paste on the mosfets
[23:01:16] <alex_chally> http://www.flickr.com/photos/33383121@N04/4999336963/
[23:24:32] <Jymmm> DXF is only a 2D format, correct? If so, what's the 3D format?
[23:27:54] <alex_chally> Jymmm, open or closed?>
[23:28:30] <alex_chally> I see lots of iges files around
[23:56:27] <danielfalck> Jymmm: STEP files (*.stp, *.step) are another open format