#linuxcnc | Logs for 2013-12-03

[00:00:40] <andypugh> The 12mm screw had a 6mm / 8mm differential screw, I think with the 16mm I can use 8mm / 12mm http://imagebin.org/280271
[00:01:39] <andypugh> cradek: I machined it before fitting. In-place machining would have been too hard even for a man who likes a challenge
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[00:03:23] <andypugh> My question is, should the differential screw be shorter than in the picture, or longer? Both options beat the arrangement shown, I feel sure.
[00:04:05] <andypugh> So, screw into the body of the ballscrew, or body of the ballscrew into the taper?
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[00:08:45] <PCW> preemt_rt seems to have about 44 usec latency on my desktop at home so may be OK for Ethernet
[00:09:19] <skunkworks> PCW: are you testing micges stuff?
[00:09:28] <PCW> Yes
[00:09:32] <skunkworks> I was hoping to today.. but maybe tomorrow
[00:09:47] <andypugh> Does anyone need me to explain differential screws? They are really fun things
[00:09:57] <PCW> well i will when i figure out the magic ip and mac incantations
[00:10:06] <skunkworks> so - it is realtime? even though using normal ethernet drivers?
[00:10:11] <PCW> Yes
[00:10:17] <skunkworks> wow - pretty cool
[00:10:40] <PCW> looks pretty good just pinging around
[00:11:21] <PCW> (the config line needs the mac address so a static arp entry can be entered)
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[00:14:28] <PCW> micges is not around or I would ask him the config format
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[00:15:46] <andypugh> cradek: Please, opinionate, I am curious about how folk vsualise the situation. As a reference point the area of the 8mm screw is about 64, and the annular ring is about 80
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[00:16:51] <andypugh> I think that a screw all the way into the meat of the ballscrew feels stronger.
[00:17:33] <andypugh> (Maybe make the taper shorter).
[00:17:58] <andypugh> But the screw will stretch, so how well is the load transferred?
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[00:21:08] <andypugh> (OT: <giggle> http://motocorsa.com/media/site/manigale-ducati-1199-wallpaper-12-comp.jpg
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[00:27:01] <Tom_itx> PCW could you explain why linuxcnc report i have a 200k gate chip when i've got a 400k one when loading the bit file?
[00:27:37] <andypugh> Possibly because you have no comms at all
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[00:27:51] <andypugh> (We should fix that)
[00:27:53] <PCW> 2 possibilities if the error is early it like any says no coms
[00:27:58] <Tom_itx> when i load a 200k gate compiled one it worked
[00:28:22] <PCW> chip selected is 200K?
[00:29:03] <Tom_itx> in xilinx yes
[00:29:11] <Tom_itx> i tried the 400k one first
[00:29:25] <andypugh> Yeah, but that checks the comms return against the (known) bitfile size. It's a really badly thought-out diagnistic, actuallly.
[00:29:25] <Tom_itx> i had to reload the zip file because of a problem then i started getting that
[00:29:40] <Tom_itx> it synthesized ok
[00:29:43] <Tom_itx> both
[00:29:58] <PCW> There are 2 things that need to be set: the GUI chip selection and the card type
[00:30:04] <Tom_itx> yes
[00:30:11] <Tom_itx> lemme fire that pc up
[00:30:26] <Tom_itx> and i'll tell you what's selected currently
[00:31:34] <PCW> a 200K bitfile for the 7I43 will be about 131K bytes a 400K bitfile will be about 212K bytes
[00:31:51] <Tom_itx> yeah it was around 209 iirc
[00:32:08] <PCW> you cannot program a 400K FPGA with a 200K bitfile or vice versa
[00:32:36] <Tom_itx> i just couldn't figure out why i got that error though since i was using a 400k seting
[00:33:04] <Tom_itx> hm2/hm2_7i43.0: board has FPGA '3s200tq144' but the firmware in hm2/7i43/SVST2_4_7I47SSS.BIT is for FPGA '3s400tq144'
[00:33:08] <Tom_itx> was the error
[00:33:10] <andypugh> Because a return value of zero can mean both 200k and no card at all. It's a bug
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[00:33:54] <atom1> use work.i43_200card.all;
[00:33:58] <atom1> is currently selected
[00:34:13] <atom1> use work.PIN_SVST2_4_7I47SSS_48.all;
[00:34:16] <atom1> and the card
[00:34:16] <PCW> OK so thats wrong
[00:34:23] <atom1> yes
[00:34:56] <atom1> but i had this selected when i got the error: use work.i43_400card.all;
[00:34:57] <PCW> so the complaint is not surprising
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[00:35:20] <atom1> so i switched _to_ the 200 to correct it
[00:35:24] <atom1> which seems wrong
[00:35:56] <atom1> i got the above error with the 400k setting
[00:36:52] <PCW> whatever is wrong it will not help to select the wrong card
[00:36:53] <PCW> if you have a 400K FPGA card you must select "use work.i43_400card.all;"
[00:37:08] <atom1> i agree
[00:37:14] <atom1> but why would i get that error?
[00:37:45] <atom1> those are the only 2 lines i changed in the file
[00:37:48] <PCW> no comms?
[00:38:10] <atom1> well i got the lcnc error screen
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[00:38:37] <atom1> i will go thru it once more to triple check what i did
[00:38:41] <PCW> you can get that error if there's no EPP comms
[00:39:15] <atom1> i'll try again and see what happens with the 400 setting
[00:39:32] <PCW> a bad bifile can do this also (a bad bitfile that loads but doesnt work)
[00:39:47] <atom1> i'm gonna test it with a known good file
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[00:40:19] <PCW> if you loaded a bad bitfile you may need to power cycle the 7I43
[00:40:29] <atom1> yeah i was each time
[00:40:43] <atom1> takes a while to churn on this pc
[00:41:05] <PCW> (since a bad bitfile will not respond to the "reset thyself" command)
[00:41:08] <atom1> i'm using the standard 7i47_48 vhd
[00:41:15] <atom1> yep
[00:42:04] <atom1> i'm not sure it likes remapping those pins like i was trying to do
[00:42:31] <atom1> using the spare B & index pins from the encoder for sserial
[00:43:08] <PCW> that cannot cause any problem
[00:43:16] <atom1> i did get sserial working, just trying to maximize pin use
[00:44:05] <atom1> if i don't use the full encoder function, i still count that as an instance in the header right?
[00:44:14] <atom1> even if it's just using channel A?
[00:44:51] <atom1> splitting the other 2 pins as an instance under sserial
[00:45:58] <atom1> i did notice while it was compiling it mentioned something about assigning zero to the unused pin functions
[00:46:09] <atom1> or such
[00:47:37] <PCW> Sure any part of an encoder still needs the whole encoder to be instantiated (but some unused logic will be trimmed)
[00:48:15] <PCW> none of these things can cause trouble at the interface level
[00:51:11] <atom1> ok
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[00:56:58] <andypugh> Back to my screw, I thing this definitely looks better torsionally, though actually I am very much more concernerd about axial forces: http://imagebin.org/280273
[00:57:16] <uw> whats that for
[00:58:00] <cradek> how do you tighten the screw?
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[01:00:15] <andypugh> I screw the screw all the way into the ballscrew, then screw on the extension piece. Then backing out the screw (with a key through the axial bore) draws the taper up, because the two sections of the screw have a different pitch.
[01:02:33] <cradek> oh now I see the green part is hollow, of course
[01:02:48] <cradek> it's very clever
[01:02:50] <andypugh> This is not my invention, Wohlhaupter have been attaching the shanks to their boring heads this way for decades. It is _very_ clever,.
[01:03:48] <cradek> and you can unmount them!
[01:04:01] <cradek> without destroying everything with jacobs wedges...
[01:04:26] <cradek> those things suck
[01:04:34] <andypugh> Because the effective pitch of the screw is 0.25mm, but the actual teeth are 1.5mm, so the clamping force is huge, but the teeth are strong.
[01:05:49] <PCW> Dont micrometers use differential screws sometimes?
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[01:06:15] <andypugh> Sometimes, yes. It's clever there too.
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[01:07:37] <PCW> Thats very slick way to get a high pull-in/push out tapered connection
[01:07:39] <andypugh> What I like about the version I am using is that you sort of end up with a bolt with a very big virtual head, that could not possibly fit down the hole you have
[01:08:30] <andypugh> (And it also has an unfeasibly small effective pitch)
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[01:10:02] <andypugh> The only drawback is that you have to remember what you did. Because it is clockwise to release :-)
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[01:10:47] <cradek> fiendish
[01:10:49] <PCW> Yes you have so much leverage you could probably bust things
[01:11:18] <andypugh> Anyway... Shorter screw or longer screw? Equal length screw clearly combines the worst of all worlds.
[01:11:27] <cradek> in watches left-hand screws are usually but not always marked
[01:12:49] <andypugh> Nicks on the corners of the nuts are usual in welding (etc) gasses.
[01:13:44] <andypugh> In this case the screw is a whole allen-key length down a hole, you rather have to know it is there to even look for ir.
[01:15:07] <andypugh> I am not sure of the exact convention, but Oxygen regulators are right-hand thread and Acetylene are left-hand.
[01:15:26] <NickParker> hey PCI slots aren't supposed to take much pressure right?
[01:15:50] <andypugh> I am not sure if the convention is combustion safety or toxicity if inhaled.
[01:15:58] <NickParker> I've got a PCI wifi adaptor for my linuxcnc box here and it's ridiculously hard to get in. The profiles look like they match and nothing else is hitting though, so i don't get it.
[01:16:48] <andypugh> There are a lot of springy pins. Perhaps start at one end?
[01:16:49] <cradek> andypugh: isn't it the other way around?
[01:17:23] <NickParker> andypugh: wow that made a world of difference. Thanks
[01:17:35] <andypugh> Also make sure that there are no foreign objects in the slot.
[01:18:00] <PCW> like folded in pins :-(
[01:18:07] <andypugh> cradek: Could be, I am not a welder
[01:19:15] <andypugh> cradek: I could also believe that it differs horrribly from country to country.
[01:19:32] <cradek> oops google says you're right
[01:20:10] <cradek> but sure, could be different here, coriolis effect
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[01:46:50] <andypugh> Goodnight all
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[02:01:42] <Tom_itx> ok the bit file is working now
[02:01:53] <Tom_itx> not quite sure what i did wrong
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[02:20:07] <Tom_itx> ok now with one channel the encoder velocity is inverted
[02:20:11] <Tom_itx> counting negative
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[02:21:35] <pcw_home> Yes thats a consequence of unused pins being tried to logic '0'
[02:22:08] <pcw_home> so in up down mode with B at '0' the count is negative
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[02:23:59] <Tom_itx> i tried inverting it by setting scale gain negative but that didn't work
[02:24:51] <pcw_home> setting the encoder scale negative should invert the count
[02:25:57] <Tom_itx> yep that did it
[02:25:58] <Tom_itx> thanks
[02:26:24] <Tom_itx> seems to all be working now
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[02:27:07] <Tom_itx> funny mistakes happen when it's late and one's tired
[02:28:36] <pcw_home> Lots of weird things are possible with the Xilinx tools as well...
[02:29:29] <Tom_itx> kinda fun messin with these bit files
[02:30:31] <pcw_home> Ive been meaning to have the module ID part autogenerated but I haven't go to it yet
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[02:31:01] <Tom_itx> it's not so bad once you know the rules
[02:31:23] <pcw_home> A tool to make the pin files would help as well
[02:31:25] <Tom_itx> i'm still not real sure about the sserial in's n outs
[02:31:56] <pcw_home> other then the resolver interface its probably the most complex module
[02:32:34] <Tom_itx> you've only implemented a single device per channel though right?
[02:32:42] <Tom_itx> up to 8 is allowed
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[02:33:28] <pcw_home> no, 1 per channel 8 per port
[02:33:38] <Tom_itx> err that's what i meant
[02:33:48] <pcw_home> 4 ports max so 32 channels max
[02:34:35] <Tom_itx> but not 2 cards on the same pins
[02:35:16] <pcw_home> No, RS-485 mode is not supported (it may eventually be but not too likely)
[02:35:30] <Tom_itx> i'm not real sure what would need it
[02:36:07] <pcw_home> Yeah and it a fair bit more complicated (especially timeout calculations)
[02:36:15] <Tom_itx> i'm gonna wire up the 2nd channel in a bit to test it
[02:36:59] <pcw_home> in some cases there may be an advantage to more ports with fewer channels/port
[02:37:10] <pcw_home> (if you have the space)
[02:37:45] <pcw_home> (a bit faster)
[02:38:43] <pcw_home> But the CPU is fairly fast (75 MHz in the 7I43) so the per channel overhead is not much
[02:43:57] <skunkworks> http://www.youtube.com/watch?v=Hm3QlWTTcjo
[02:44:15] <Tom_itx> here's the .vhd file i ended up with: http://tom-itx.dyndns.org:81/~webpage/cnc/configs/sherline/bitfiles/PIN_SVST2_4_7I47SSS_48.vhd
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[02:45:26] <Tom_itx> sss.. sserial special
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[02:47:08] <pcw_home> Nothing on the second connector?
[02:49:08] <Tom_itx> gonna try it now
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[03:22:18] <Tom_itx> pcw_home, do i need 2 instances of sserial in the bit file to run cables on 2 pairs of tx rx pins?
[03:23:21] <Tom_itx> IO 12 & 20 are 1 and IO 14 & 21 are the other pair
[03:23:43] <Tom_itx> i think you told me only one
[03:26:20] <pcw_home> just one (up to 8 channels per sserial instance)
[03:27:36] <Tom_itx> i'm not getting anything from the 2nd one yet
[03:29:20] <pcw_home> config line correct?
[03:29:54] <Tom_itx> umm
[03:29:58] <Tom_itx> i bet not
[03:29:59] <Tom_itx> :)
[03:31:02] <Tom_itx> duh
[03:34:36] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/cnc/configs/sherline/bitfiles/showpin.txt
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[03:52:20] <pcw_home> Probably a bit more I/O than you need
[03:52:56] <Tom_itx> it was a good exercise
[03:53:09] <Tom_itx> but yeah probably so
[03:54:01] <pcw_home> but you still haven't enabled the analog inputs and MPG encoders...
[03:54:29] <Tom_itx> i tried mode 2 for encoders but didn't see them show up in the list
[03:54:48] <Tom_itx> i need to read the docs more
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[05:42:19] <Jymmm> This is awesome https://www.youtube.com/watch?v=-RWzd3Q-Qtg
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[06:51:39] <RyanS> archivist could it be possible that motor manufacturer went cheap inside the junction box and just used a generic terminal block. Perhaps it's just a matter of changing the terminal block for one with straps?
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[07:38:17] <xxoxx> hi
[07:38:40] <xxoxx> can feed rate be tied to spindle encoder reading ?
[07:39:02] <xxoxx> manually control spindle speed, and thereby control the feed rate of the entire program ?
[07:39:32] <xxoxx> much like how old manual lathe works, except the XY axis is cutting a pattern
[07:40:12] <Jymmm> for knurling?
[07:40:40] <xxoxx> not just knurling
[07:40:49] <xxoxx> for general cutting, lathe and mill
[07:41:34] <xxoxx> basically could slow down even stop the program, just by manually dialing down the spindle
[07:41:55] <xxoxx> for retrofit lathes and mills
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[08:13:03] <_DJ_> moin
[08:13:50] <Jymmm> Ug
[08:23:16] <_DJ_> hoi Jymmm :)
[08:24:15] <Jymmm> =)
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[09:08:15] <archivist> RyanS, no, cheap means not extending the wires to the terminals
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[09:26:25] <zoni1983> hi
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[09:27:33] <zoni1983> anybody experience with pid tuning
[09:28:22] <zoni1983> i have 5i20 with 7i33
[09:30:38] <zoni1983> is any one there
[09:34:23] <kengu> hello. no.
[09:35:02] <zoni1983> need help with pid tuning
[09:44:44] <archivist> have you seen http://gnipsel.com/linuxcnc/tuning/index.html
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[10:47:24] <archivist> xxoxx, you have g33 for when you want geared behaviour
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[10:48:22] <archivist> or what are you really trying to do, because you can tie axes together in hal
[10:51:10] <xxoxx> archivist, thanks. I think that's what I wanted.
[10:51:15] <xxoxx> thanks for the pointer
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[10:54:19] <archivist> I do some strange stuff where arbitory gearing of axes by equation would be nice
[10:57:37] <xxoxx> yep... in my case e.g. hobbing, semi-manual patterns etc...
[11:00:08] <archivist> did you see the wiki page for hobbing
[11:00:57] <archivist> in that case it has been done with hal gearing and a pyvcp spin box to poke it into hal
[11:01:47] <archivist> I do patterns in gcode (calling subroutines)
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[11:09:41] <archivist> xxoxx, http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Hobbing
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[13:44:40] <Jymmm> Any suggestions on a mens digital waterproof sports watch? solar and atomic would be nice
[13:44:59] <jdh> G-Shock
[13:45:08] <Jymmm> that too
[13:46:09] <jdh> http://www.gshock.com/watches
[13:47:10] <jdh> timex iron-man also
[13:48:07] <Jymmm> I'm on amazon atm, 300+ casio (gshicks)
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[13:50:45] <Jymmm> http://www.amazon.com/Casio-GW7900B-1-G-Shock-Atomic-Digital/dp/B00309HQPK/ref=pd_rhf_ee_p_d_3
[13:51:02] <archivist> get cheap watches, you dont worry when they get damaged
[13:51:11] <Jymmm> archivist: =)
[13:51:41] <Jymmm> 3/4 in thick. lol
[13:51:45] <jdh> I've taken G-Shocks 250+ft deep with no problems.
[13:52:13] <Jymmm> jdh: But have you truned a corner and smacked it into something really hard?
[13:52:47] <jdh> nope, I haven't worn a watch in years in real life.
[13:52:56] <Jymmm> like a forklift
[13:53:50] <Jymmm> Yeah, me neither, but timer/stopwatch have been coming in handy lately
[13:54:14] <jdh> I have a bunch of those on my phone.
[13:54:46] <Jymmm> me too, but it doens't like my shower too much
[13:55:21] <jdh> I don't guess I need to know what you are timing in the shower.
[13:55:42] <Jymmm> and I dont carry my phone around the house. no no, just waterproof
[13:55:43] <jdh> get a Samsung Galaxy S4-Active, it is showerproof
[13:56:01] <Jymmm> is it? looking...
[13:58:40] <Jymmm> jdh: I don't think so, heh... http://reviews.cnet.com/smartphones/samsung-galaxy-s4-active/4505-6452_7-35783536.html
[14:00:19] <jdh> ?
[14:00:29] <Jymmm> 1m
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[14:00:39] <jdh> you have a shower deeper than 1m?
[14:01:14] <Jymmm> If I'm gonna pay $700, it's going smiwwing too!
[14:01:35] <Jymmm> underwater photography
[14:01:38] <jdh> they are 'free' with 2yr contract
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[14:02:31] <Jymmm> Yeah, no thanks. I'd get an otter box instead
[14:02:56] <jdh> me too, but that all seems like a lot of hassle for just wanting a stopwatch in teh shower.
[14:03:13] <Jymmm> *sigh*
[14:03:29] <Jymmm> I want a watch that I can wear all the time.
[14:03:47] <Jymmm> not that I'm timing something in the shower itself.
[14:03:52] <archivist> who needs a stopwatch ,just count to 10 and change hands
[14:04:02] <jdh> ironman is a little lower profile.
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[14:11:05] <Jymmm> DickTracy watch http://dx.com/p/1-3-touch-screen-wrist-watch-style-quadband-gsm-cell-phone-black-71488
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[14:22:49] <Jymmm> jdh: oh gawd... A watch to compliment the galaxy phone http://www.amazon.com/Samsung-Galaxy-Smartwatch--Retail-Packaging/dp/B00FH9I0FQ/ref=lp_6358540011_1_2?s=watches&ie=UTF8&qid=1386080415&sr=1-2
[14:23:24] <Jymmm> jdh: ...with facebook notification *rolls eyes*
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[14:40:35] <MacGalempsy> morning
[14:41:50] <MacGalempsy> anyone fixin to hunker down for the snowstorm?
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[14:59:28] <MacGalempsy> everyone have a nice thanksgiving holiday?
[15:03:05] <skunkworks_> Yes - no real issues
[15:03:12] <skunkworks_> how about you
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[15:06:54] <MacGalempsy> was smooth sailing, not too cold in CA
[15:07:19] <MacGalempsy> but we returned and tomorrow or the next days is the beginning of a 4+ day cold streak
[15:08:28] <MacGalempsy> skunkworks_: no family knife fights this year?
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[15:08:52] <skunkworks_> heh - no
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[15:09:32] <MacGalempsy> thats always good
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[15:43:29] <Jymmm> skunkworks_ just has family equipment fights
[15:44:23] <archivist> too heavy to throw
[15:45:10] <Jymmm> Nah, he just spins the tool changer up to 2000rpm then uses it like a sling
[15:45:36] <Jymmm> and on the K&T.... that's gotta hurt!
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[15:48:11] <Jymmm> http://electronicsam.com/images/KandT/conversion/toolchangerspindle.JPG
[15:51:59] <Jymmm> skunkworks_: How did this happen? http://electronicsam.com/images/KandT/conversion/testing/oops.JPG
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[15:53:49] <dep> bonjour tout le monde
[15:54:39] * archivist passes a link to google translate
[15:54:59] <skunkworks_> Jymmm, actually - it was caused by the HD getting redirected sectors and the var file was coruped so the tool change position was wronge.
[15:55:01] <dep> hello
[15:55:15] <dep> i need help to configure my lathe
[15:55:31] <dep> i have a tool changer, I'm newbee
[15:55:39] <Jymmm> skunkworks_: Nice.... you should now sell it as "art" =)
[15:55:45] <Jymmm> ...digital art =)
[15:56:06] <archivist> dep just ask the actual questions
[15:56:45] <dep> sorry It's my first time on IRC
[15:57:12] <archivist> welcome to IRC
[15:57:31] <dep> TKS
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[15:58:26] <dep> I retrofited an EMCO TURN PC 50
[15:58:51] <dep> i've changed all of elecronical parts ...
[15:58:57] <jthornton> you posted on the forum right?
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[15:59:25] <dep> Yes, on linuxcnc.org forum
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[16:00:39] <MacGalempsy> dep: have you made anything yet?
[16:01:31] <dep> for the tool changer, I have 3 pins, one output on N6, and two input on N10 and N11
[16:02:09] <dep> the output give at the lathe the information to go to the next position tool
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[16:02:45] <dep> and the input N10 return that the tool changed
[16:03:10] <dep> and the input N11 return just the position of tool N1
[16:04:01] <archivist> dep you probably need to use classicladder to control the tool changer
[16:04:13] <dep> first: I don't understand how I can do the relation between G-code M6 T1 and the hard commande ....
[16:04:25] <dep> what is classic loader
[16:04:39] <dep> sorry Classicladder
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[16:05:00] <jthornton> http://linuxcnc.org/docs/html/ladder/classic_ladder.html
[16:05:11] <jthornton> http://linuxcnc.org/docs/html/ladder/ladder_examples.html
[16:05:18] <archivist> often used to control tool changers
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[16:05:53] <jthornton> and a lathe tool changer example http://gnipsel.com/shop/hardinge/hardinge.xhtml
[16:06:22] <jthornton> and a lathe tool changer sim http://gnipsel.com/linuxcnc/index.html
[16:06:29] <jthornton> scroll down on that page a bit
[16:06:49] <jthornton> dep got all that?
[16:08:33] <dep> Yes i'am reading this page and download zipfiles turretchanger
[16:08:53] <jthornton> that will keep you busy for a while I'm sure
[16:08:54] <dep> I never use some programm language
[16:09:20] <dep> i'm french mechanical man ;-)
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[16:14:40] <dep> I think for the moment, i have put a push button on a front panel for manuel command to rotate the turret ... I'm so newbee to understand EMC2 programmation ...
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[16:15:49] <dep> thanks you for your help, but I think I'm not competent for this job :-(
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[16:16:57] <jthornton> well it will take some time to understand it all, but try the sample sim and open the ladder up and observe it while you press the tool change buttons
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[16:18:25] <dep> how I can open the ladder in linuxcnc
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[16:18:48] <jthornton> from the menu
[16:19:01] <dep> Ladder is like a grafcet no ?
[16:20:18] <jthornton> Classicladder can do grafcet but the examples use ladder logic
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[16:21:14] <dep> I need to tick an option at the beginning of EMC2 congiguration to have ladder in menu no ?
[16:23:26] <jthornton> not in the example
[16:23:37] <jthornton> are you talking about the Stepconf Wizard?
[16:25:01] <Jymmm> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Sample_HAL_And_ClassicLadder
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[16:26:27] <dep> yes stepconf wizard
[16:27:06] <jthornton> yes, I think there is an option to add Classicladder there IIRC
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[16:28:43] <dep> Tks guys, I must to try that in my home...
[16:28:44] * jthornton goes back to work now
[16:29:06] <dep> I must to leave now, tks so much
[16:29:22] <dep> I hope I can do somethinks ...
[16:29:33] <dep> sorry for my poor english
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[16:30:17] <archivist> our french would be much much worse :)
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[16:30:47] <dep> ;-)
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[17:33:03] <flughafen> I understand there are some german people in this channel?
[17:34:01] <cradek> sure, probably so
[17:34:58] <Spida> flughafen: ja
[17:35:12] <flughafen> are there any decent cnc kits in germany?
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[17:39:39] <kengu> flughafen: you need to give a bit more information
[17:39:54] <kengu> but off if go..
[17:40:19] <flughafen> inexpensive kits < 3000€
[17:52:15] <mrsun> hmm getting joint 1 limit error when trying to use a microswitch for home+limits :/
[17:52:47] <mrsun> need to update the linuxcnc also i think, its like 4 years old now .. if there has come any updates that is :P
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[17:55:34] <IchGuckLive> hi all B)
[17:55:57] <flughafen> morgen!
[17:55:59] <flughafen> oder abend
[17:56:11] <flughafen> ich kann nie mich errinern
[17:56:11] <IchGuckLive> hi that sounds German !!
[17:56:18] <IchGuckLive> ich sitz in kaiserslautern
[17:56:27] <flughafen> Nürnberg in ze haus
[17:56:43] <IchGuckLive> language here in english
[17:56:54] <IchGuckLive> whats up
[17:57:00] <flughafen> Nothing, whats up with you?
[17:57:05] <IchGuckLive> mill or turn or ?
[17:57:28] <IchGuckLive> im in good shape awaitning snow tomorrow
[17:57:30] <flughafen> I am fräs-less
[17:57:41] <IchGuckLive> so why you are hre
[17:58:02] <flughafen> was interested in some info on cnc kits in my heimatlands
[17:58:21] <IchGuckLive> oh there are alot of
[17:58:29] <IchGuckLive> from laser to plasma
[17:58:46] <IchGuckLive> from 3D printing to scuptunrn
[17:59:02] <IchGuckLive> lots of german do CAD CAM
[17:59:03] <flughafen> I'm not really into 3d printing, (at least not for 20+ years)
[18:00:24] <IchGuckLive> hard to tell if ther is no way to the goalline
[18:00:31] <archivist> kit to make what, often a lot of us retrofit something
[18:00:49] <IchGuckLive> PCB milling sculpt ...
[18:00:52] <flughafen> a cnc kit, not to retrofit, the whole frame/electronics/everythign
[18:01:06] <IchGuckLive> protos
[18:01:15] <IchGuckLive> or cnc-shop
[18:01:18] <archivist> flughafen, to make what though
[18:01:29] <IchGuckLive> querry in german
[18:01:39] <flughafen> ha
[18:01:46] <flughafen> i'd actually prefer to speak in english
[18:01:48] <IchGuckLive> hit my name
[18:01:54] <flughafen> ich bin deutscher aber in den usa aufgewachsen
[18:02:06] <flughafen> und mein deutsch ist sehr komisch
[18:02:31] <Loetmichel> flughafen: we germans dont mind
[18:02:44] <flughafen> so, I think it would be awesome if i could build a small engine , like a 2 stroke r/c engine
[18:02:46] <Loetmichel> our english is "strange", also ;-)
[18:02:49] <flughafen> ha
[18:03:19] <flughafen> whenever a german says "my english is terrible," it ends up being much better/nicer than listening to americans speak
[18:03:24] <archivist> flughafen, so you want a milling machine and a lathe
[18:03:51] <jdh> or at least a lathe.
[18:03:56] <Loetmichel> flughafen: tell me about it, my wife was english/german teacher (hischool) once
[18:03:58] <flughafen> why not a 4 axis?
[18:04:10] <flughafen> or is this what you mean?
[18:04:29] <IchGuckLive> flughafen: look into the querry given adresses
[18:04:35] <archivist> lathe for turning round stuff
[18:04:47] <Loetmichel> ... every time i am at hom and talking on the phone with some american/english suppliers i hear "WRONG!" yelled across the flat all five sentences ;-)
[18:05:21] <Loetmichel> s/all/every
[18:05:32] <archivist> usually german speakers english is very good except for one in here :)
[18:05:37] <flughafen> well, i know what a lathe is, but when you say lathe, do you mean, a 4th axis to a cnc? or a separate lathe?
[18:06:05] <IchGuckLive> flughafen: Drehbank
[18:06:08] <flughafen> ok, thanks
[18:06:11] <Loetmichel> flughafen: depends. i have a lathe that could fit as 4th axis on my mill ;-)
[18:06:15] <jdh> you could build it with just a lathe
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[18:06:57] <archivist> lathe make better circular parts usually
[18:07:18] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=520 <- REALLY tiny ;-)
[18:07:38] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=14058 <- thats me working on it ;-)
[18:07:55] <jdh> is that a sieg c1?
[18:08:03] <Loetmichel> c0
[18:08:12] <jdh> heh
[18:08:15] <flughafen> your beard and the material look the same
[18:08:23] <archivist> cant tell beard from swarf
[18:08:30] <jdh> acrylic?
[18:08:38] <Loetmichel> acrylics
[18:08:45] <Loetmichel> -s
[18:09:02] <Loetmichel> Plexiglas (r) to be precise
[18:09:10] <jdh> I turned a canister lid out of acrylic, it looked much the same.
[18:09:49] <jdh> I like that finger over the e-stop
[18:09:53] <Loetmichel> i milled a whole 5,25" USB-port insert from it
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[18:10:40] <Loetmichel> jdh: better safe than sorry ... especially after having removed the shhield over the collet ;-)
[18:11:31] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=12843 <- thats the end result
[18:11:32] <flughafen> ~does anybody here mill in their apartment?
[18:11:45] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=10886
[18:11:52] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=10883
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[18:11:59] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=10880
[18:12:06] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=10877
[18:12:11] <Loetmichel> flughafen: here, i do
[18:12:14] <archivist> flughafen, does kitchen and small bedroom count :)
[18:12:20] <Loetmichel> much to the dislike of my wife ;-)
[18:12:37] <archivist> old free and single here to nagging
[18:12:43] <archivist> to/no
[18:13:55] <archivist> small lathe is in the kitchen, baby 5 axis mill in the small bedroom
[18:13:56] <flughafen> haha
[18:14:15] <Loetmichel> archivist: i really cant complain: my wife earns the big bucks over here, so she pays the rent and everything, and i have my owb room in the flat for working
[18:14:20] <flughafen> I have a garage, but it has no power(is this common in germany?) and the garage is too far away for an extension chord
[18:14:25] <flughafen> archivist: what 5axis do you have?
[18:14:26] <Loetmichel> and MY income is completle for myself ;-)
[18:14:42] <flughafen> I am married but we have separate bank accounts
[18:14:46] <archivist> flughafen, a fugly homebrew
[18:14:51] <Loetmichel> flughafen: my garage(s) have also no power
[18:15:04] <flughafen> i find this no power in the garage _VERY_ annoying
[18:15:10] <archivist> wire it
[18:15:29] <flughafen> by tapping into what?
[18:15:30] <Loetmichel> but they are just across the yard, so that will be remedied soon, as i get permission from the landlord to dig a bit ;-)
[18:16:10] <archivist> the garage here had no power, we extended off the house ring main
[18:16:31] <flughafen> archivist: the house must be 150m away?
[18:16:57] <Loetmichel> this is a 4 flat house over here, and three garages across the yard. And rented
[18:17:16] <Loetmichel> so i better ask the landlord before i start digging.
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[18:18:07] <flughafen> I might consider moving, but that will ofcourse cost money too
[18:18:37] <flughafen> http://www.kronosrobotics.com/krmx02/index.shtml <- i was also consdering building this
[18:18:55] <archivist> machine tools dont like cold garages, best kept in the warm
[18:18:57] <flughafen> for the size and weight it's reasonably priced, like 1800$ for all the parts
[18:19:18] <Loetmichel> flughafen: looks a bit weak to me
[18:19:21] <flughafen> archivist: I sleep with my werkzeug every night
[18:19:26] <archivist> wrong machine for engine making
[18:20:02] <archivist> that is a router for wood and plastic work
[18:20:13] <Loetmichel> especially the "linear ways"...(shudder)
[18:20:51] <Loetmichel> i think even my construction of "linear ways" will be more rigid than that... ;-)
[18:21:16] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=8884
[18:21:17] <archivist> that makes my machine almost pretty
[18:22:01] <archivist> out of date picture http://www.collection.archivist.info/archive/DJCPD/PD/2013/2013_08_11_bevel/IMG_1633.JPG
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[18:24:38] <Loetmichel> archivist: thats a nice half ton of steel ;-)
[18:24:59] <Loetmichel> ok, quarter ton )
[18:25:00] <Loetmichel> :-)
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[18:25:20] <uw> what do people use here to make square holes
[18:25:28] <archivist> file
[18:25:42] <archivist> or broach
[18:25:50] <uw> i need to make a tool that uses a square hole for 1/2" ratchet
[18:26:03] <uw> file sounds like it would take forever
[18:26:10] <uw> broach eh
[18:26:18] <archivist> for a one off a file can be the easiest
[18:26:24] <sirdancealo2> a square drill bit, obviously
[18:26:48] <uw> hurhrurhru
[18:26:56] <archivist> they do exist
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[18:27:14] <archivist> horrid but do exist
[18:27:22] <flughafen> uw: http://www.youtube.com/watch?v=ALiqAXiTQBg
[18:28:09] <uw> flughafen, i've watched like 1000 videos with this tool / principal but cant find where to buy one
[18:28:25] <uw> it's a triangle thing that rides in a square guide
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[18:28:54] <archivist> by the time you get one you could have filed the hole
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[18:29:18] <uw> filing sucks and would take me 10hrs with the file i have
[18:29:43] <archivist> you could also use your mill/lathe as a shaper
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[18:30:06] <uw> is that what you mean by broach method?
[18:30:12] <archivist> no
[18:30:33] <Loetmichel> uw: i mill it and file the corners with a triangle file ;-)
[18:30:36] <archivist> broach requires a high force press
[18:30:59] <Loetmichel> or drill into the corners beforehand and mill out the rest, depending on the "sharpness" of the edge needed
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[18:33:44] <archivist> uw how many items are you going to be making
[18:34:03] <uw> probably 20
[18:34:21] <uw> maybe more
[18:34:33] <uw> i know i need 5 right now
[18:34:51] <IchGuckLive> @ all the new Kinect is best voted for cheep 3D full scanner
[18:35:55] <uw> i wish i had the device that cuts square holes like in the video above
[18:36:26] <uw> I was going to just weld cheap sockets on to the tool and use the square end from them, but thats kind cheesy
[18:36:26] <archivist> uw http://www.ebay.com/bhp/square-broach
[18:37:04] <archivist> some require pulling some require pushing
[18:37:07] <flughafen> are there any MEs in here?
[18:37:23] <archivist> for what definition of me
[18:37:30] <flughafen> mechanical engineer
[18:37:38] <archivist> doing what
[18:37:44] <flughafen> anything
[18:37:48] <uw> thanks archivist can i hammer this?
[18:37:51] <uw> i dont have press
[18:38:00] <flughafen> only with mjolnir
[18:38:05] <archivist> uw I use a drill press
[18:38:13] <uw> oh...thats a good idea
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[18:38:19] <uw> thanks
[18:38:23] <archivist> but that is ver bad on the drill press
[18:38:28] <Loetmichel> flughafen: no power?
[18:38:28] <archivist> very
[18:38:51] <uw> yea thats true
[18:38:58] <uw> well now i know where too look anyway
[18:39:01] <Loetmichel> these broaches CAN be hammered with a small 1kg hammer... but they thend to "dont like that misuse"
[18:39:12] <archivist> they break
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[18:40:02] <archivist> I had made one for a special job and snapped it
[18:40:03] <uw> i should watch some broaching videos on youtube
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[18:40:33] <uw> i dont want to spend $150 and break the thing 10secs into it
[18:41:20] <archivist> no hammering then
[18:41:41] <Loetmichel> uw: you CAN do the setup i did when making a "pipe spanner" out of brass tube fort M3 nuts
[18:42:01] <archivist> I have keyway broaches and they are very good for the job
[18:42:03] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=11795
[18:42:05] <FinboySlick> uw: you can probably get a decent little press for less than the price of those broaches.
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[18:43:21] <Loetmichel> just use a piece of mild steel pipe with a fitting diameter, press a hard square piece in it , hammer it out... weld the resulting "square drive" to your tool... harden, done ;-)
[18:43:53] <Loetmichel> i just used a steel nut for the wrench pictured ;-)
[18:44:15] <archivist> forge the square hole
[18:44:23] <archivist> when red hot
[18:44:38] <Loetmichel> would be an option also, right
[18:44:47] <uw> i thought about that Loetmichel but idk if it will be strong enough for the application
[18:45:13] <uw> i have like 10 spark plug wrenches that look just like the one in your picture
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[18:45:57] <Loetmichel> uw: eat more black bread ;-)
[18:45:58] <uw> also is that a quad rotor
[18:46:06] <Loetmichel> uw: it is
[18:46:17] <Loetmichel> hexa actually
[18:46:30] <uw> LOL whats black bread?
[18:46:34] <Gabriel_56> uw: I have not followed the topic, but there is the possibility of milling two L-shaped blocks and bolting or welding them together, maybe with a matching profile if precision is important.
[18:46:39] <uw> and wheres DJAY
[18:46:54] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=12997 <- full view
[18:47:07] <Loetmichel> uw: "schwarzbrot"
[18:47:34] <uw> Gabriel_56, that's not a bad idea. it is for putting a custom tool on a 1/2" rachet
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[18:48:03] <Loetmichel> http://www.duden.de/rechtschreibung/Schwarzbrot
[18:48:43] <uw> Wer nicht gerne Brot zum Frhstck? ;)
[18:49:06] <uw> it looks like pumpernickel
[18:49:11] <Loetmichel> it is
[18:49:13] <Loetmichel> more or less
[18:49:47] <Gabriel_56> uw: ah ok, so probably it would be too bulky :)
[18:50:19] <uw> Maybe Gabriel_56 maybe not. I'm tossing around ideas
[18:50:27] <uw> i'll probably buy that broach
[18:50:35] <uw> i need these pieces by next friday
[18:50:37] <Loetmichel> you can also work a while as a mason or in the moving business to gain the needed power ;-)
[18:50:52] <Loetmichel> uw: whre are you located?
[18:51:10] <uw> Loetmichel, i'm in NYC area. are you near DEEJAY?
[18:51:28] <Loetmichel> if you call 500km "near": yes
[18:51:30] <Loetmichel> ;-)
[18:51:47] <Loetmichel> he's more or less "around the corner"
[18:52:07] <IchGuckLive> uw i will be in yonkers for 2 days after xmas
[18:52:18] <uw> i'm going to germany next year and i swear i'm going to visit him LOL
[18:52:44] <uw> IchGuckLive, very cool
[18:53:08] <IchGuckLive> O.O
[18:53:28] <Loetmichel> uw: still i would use a steel block, drill 4 2mm holes in the corners of the half" square, drill a big 12mm hole in the middle and then saw/file the rest
[18:53:42] <Loetmichel> should go fast and for 5 pieces its not too much work
[18:53:57] <archivist> he want 20 + parts
[18:54:19] <Loetmichel> uw: i already met him a few times on copter conventions
[18:54:24] <Loetmichel> nice guy ;)
[18:54:38] <uw> Loetmichel, i'm planing on making 20 parts but need 5 by next friday. i'm thinking i might as well get the broach
[18:54:56] <Loetmichel> if you think you need it, do so
[18:55:00] <uw> Loetmichel, LOL i really dont know him. I was only teasin ;)
[18:55:03] <Loetmichel> do you have a CNC mill?
[18:55:10] <uw> Loetmichel, yes
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[18:55:22] <Loetmichel> so why not doing it with the mill?
[18:55:36] <archivist> you can mill most of the square and finish off with the broach
[18:55:40] <Loetmichel> the corner can (and should be) " a bit free" anyways
[18:55:52] <uw> the rest of the tool is made on the mill but the square part i'll have to manually do
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[18:56:12] <Loetmichel> just cut about a third of the mill tool diameter diagonally into the corner, done
[18:56:21] <Loetmichel> and use a 2mm max mill bit ;)
[18:56:24] <archivist> using a smaller endmill, slowly can get into the corners
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[18:56:39] <archivist> effin slow though
[18:56:54] <Loetmichel> let me see if i have a vid...
[18:56:59] <uw> the cnc part is done with 3/8" end mill so it could do some of it
[18:57:09] <uw> still it's the corners i need to take care of
[18:58:17] <archivist> milling part of the square will reduce the press force you need
[18:58:48] <Loetmichel> have no video
[18:59:14] <Loetmichel> but what i meant: the corner shouldnt carry any force anyway, so no loss if youi mill them out a bit
[18:59:42] <Loetmichel> like this (wait a moment, painting it...)
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[18:59:57] <uw> archivist, Loetmichel that is not bad ideas
[19:00:17] <uw> i just have to add it to tool path then still buy broach
[19:00:22] <uw> but that's for me to figure
[19:03:11] <uw> yea thats what i think i'll just do
[19:03:17] <uw> mill out as best i can then broach
[19:05:29] <Loetmichel> UW: i menat like this: http://www.cyrom.org/palbum/main.php?g2_itemId=14535
[19:06:22] <Loetmichel> drill the 4 corners, than mill out the square
[19:06:37] <uw> oic
[19:07:24] <uw> the smallest mill i have is 3/16" (like 5mm)
[19:08:00] <Loetmichel> hrhr
[19:08:01] <uw> id have to change mills too because the rest is in 3/8"
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[19:08:10] <Loetmichel> i just bought a few 0,3mm ones ;-)
[19:08:21] <uw> lol how do they not snap
[19:08:28] <Loetmichel> they do ;-)
[19:08:39] <Loetmichel> and of course tungsten carbide
[19:09:22] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=11933 <- 0.4mm on the right ;-)
[19:09:33] <Loetmichel> aehm.. onm the left, of course
[19:10:33] <Loetmichel> 0,3mm is tha smallest i can use on my mill, runout of the chinese spindle comes into play after that ;-)
[19:10:38] <Loetmichel> beyond that
[19:11:46] <FinboySlick> Loetmichel: Must take a while to face a 12"x12" plate with one of those ;)
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[19:12:00] <Loetmichel> FinboySlick: would do ;-)
[19:12:27] <uw> haha
[19:12:33] <Loetmichel> especially as they are with a "drill tip"
[19:12:34] <Loetmichel> ;-)
[19:12:47] <Loetmichel> not flat head
[19:13:03] <uw> what in/s rate do you get with them LOL
[19:13:11] <Loetmichel> hmm
[19:13:14] <uw> .01
[19:13:16] <Loetmichel> calculating...
[19:13:18] <uw> or mm/s
[19:13:49] <Loetmichel> about 0,25in/sec
[19:14:04] <Loetmichel> F600
[19:14:06] <FinboySlick> That's not bad.
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[19:14:20] <Loetmichel> and 24kRPM ;-)
[19:14:22] <FinboySlick> I guess that's pretty much a factor of how fast you can spin it.
[19:14:25] <FinboySlick> Yeah.
[19:14:45] <uw> lol 24k
[19:15:05] <Loetmichel> its "pedal->metal" for that chinese spindle
[19:15:22] <Loetmichel> i COULD run them with 60krpm and would still be in limits of cutting speed ;-)
[19:15:54] <uw> i'm sure those chi bearings would squeal with joy
[19:16:09] <Loetmichel> they would, no doubt
[19:16:57] <Loetmichel> it is surprisingly quiet at 24krpm, though
[19:17:31] <uw> thats good
[19:17:32] <Loetmichel> https://www.youtube.com/watch?v=jMXxjT4nNxg
[19:18:03] <uw> looks good
[19:18:12] <uw> I will subscribe to you on youtube
[19:18:54] <uw> i read mixed reviews on those spindles
[19:19:05] <uw> just subscribed
[19:19:31] <Loetmichel> i have two: runout less than 0,01mm, no problem so far after a year of use... sheer luck, i suppose
[19:20:00] <uw> the price is good and that one is probably the same one i've looked at on ebay
[19:20:06] <Loetmichel> and it can do aluminium without a problem
[19:20:10] <uw> I'm guessing
[19:20:43] <Loetmichel> https://www.youtube.com/watch?v=jzOtqYhpHIM
[19:21:10] <Loetmichel> (careful. LOUD)
[19:23:07] <Loetmichel> and in acrylics its even silent: https://www.youtube.com/watch?v=QNLjMg0Nitk
[19:23:08] <uw> is that lovejoy c
[19:24:03] <Loetmichel> ?
[19:24:19] <uw> the previous video is that a lovejoy coupling
[19:24:26] <Loetmichel> hmmm
[19:24:51] <Loetmichel> google says yes
[19:25:00] <Loetmichel> didtn know they were called that
[19:25:13] <uw> http://www.ruralking.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/0/6/061420111.jpg
[19:25:20] <uw> i think thats a brand name
[19:25:29] <uw> idk what they are generically called
[19:25:39] <FinboySlick> Spider coupling I think?
[19:25:56] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=12846
[19:26:03] <Loetmichel> was made for this spindle
[19:26:26] <uw> oic
[19:26:40] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=12821
[19:28:35] <Loetmichel> hmm, three prongs... would have been a solution, also... but it works with two, so why bother? ;-)
[19:29:21] <uw> sure they both are acceptable
[19:30:12] <Loetmichel> this small "spindle" does 30krpm also
[19:30:20] <Loetmichel> but gets a bit hot then ;-)
[19:30:29] <Loetmichel> (using normal roller blade bearings...)
[19:30:50] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=12840
[19:32:52] <FinboySlick> Loetmichel: Would it be worth looking into oil bearings (like in a turbo) for that sort of speed?
[19:33:04] <Loetmichel> no
[19:33:21] <Loetmichel> not for a spindle designated as a gift for a friend ;-)
[19:34:12] <Loetmichel> but i washed the bearings with gasoline, put in some thin oil, and swapped the PE spider for a rupper one-> 45°c at 35krpm... thats ok ;-)
[19:34:33] <Loetmichel> rubber
[19:35:10] <FinboySlick> Loetmichel: Now for a real challenge, get it to do rigid tapping at that speed ;)
[19:35:34] <Loetmichel> FinboySlick: 0,2mm threads: no problem ;-)
[19:36:04] <archivist> you cannot stop it fast enough to reverse out
[19:36:11] <Loetmichel> (may need a big brake on top, though) ;-)
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[19:37:10] <archivist> getting the encoder read properly would not be trivial
[19:37:57] <Loetmichel> archivist. depends on the cpr ;-)
[19:39:13] <FinboySlick> I can just imagine engaging the break and the machine doing a 180° turn on its stand.
[19:39:40] <Loetmichel> FinboySlick: btdt
[19:39:41] <FinboySlick> Inertia, thy be a cruel mistress.
[19:39:48] <archivist> there is a video of a friction welder tipping
[19:40:08] <flughafen> archivist: i'd like to see that, ha
[19:40:19] <FinboySlick> Yeah, I was going to ask for a link.
[19:40:50] <Loetmichel> had some 3kW siemens AC servos (about 30kg each) and accidentally ordered them to do " ONE full turn, maximum speed"... while laying on a wooden pallet without any fixing
[19:41:45] <FinboySlick> Loetmichel: So the shaft did a half turn in one direction and the body did a half turn in the other direction? ;)
[19:41:47] <Loetmichel> first the lights in the company got dark, then they got VERY bright, then you'd see a 30kg motor about half a meter up in the air ;-)
[19:42:40] <Loetmichel> (nice effect that the indramat servo amps could do regenerative braking) ;-)
[19:42:56] <FinboySlick> Loetmichel: when you do something stupid here, you buy pizza for the staff... I wonder what sort of pizza that would have cost you.
[19:43:09] <Loetmichel> i WAS the staff ;-)
[19:43:33] <FinboySlick> So you should have treated yourself to a pizza!
[19:43:57] <FinboySlick> Loetmichel: BTW, are you sure you haven't moved to Sweden?
[19:44:06] <Loetmichel> i am, why?
[19:44:13] <FinboySlick> Loetmichel: You have too much sense of humour to be German today.
[19:44:29] <FinboySlick> You're breaking my carefully crafted stereotypes.
[19:44:41] <Loetmichel> i have to nuch sense of huor to be anywhere.
[19:45:15] <FinboySlick> See? Your German roots subconsciously prevented your brain from typing 'humour' right.
[19:45:20] <flughafen> haha
[19:45:29] <Loetmichel> you know what the germans say: "wenns nicht so traurig wär' würde man stundenlang lachen!"
[19:45:34] <flughafen> that's funny, and I know funny, I am a german
[19:46:07] <Loetmichel> "one would laugh all day if it wasnt so sad"
[19:46:35] <Loetmichel> i think life is much easier when laughing at things you cant change and change things you can ;-)
[19:46:58] <FinboySlick> Loetmichel: This is why we have clowns in government ;)
[19:48:01] <flughafen> yeah, maybe germans have no humor, but the mayor of nürnberg has not been caught smoking crack ;)
[19:48:17] <Loetmichel> flughafen: so what?
[19:48:53] <Loetmichel> coke, crack, H, whatever it suits their needs. as long as they are douing their jobs thats fine with me
[19:49:09] <Loetmichel> -it
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[19:49:48] <FinboySlick> Hmmm... "as long as they are doing their job" is a tricky bit.
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[19:55:12] <FinboySlick> archivist: Remember my 'crooked mill' problem?
[19:55:29] <FinboySlick> (how could you forget ;)
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[19:59:08] <flughafen> i dont have any mill :(
[19:59:40] <FinboySlick> flughafen: Hehe, if you want to buy mine, feel free.
[19:59:57] <flughafen> for 50$?
[20:00:03] <FinboySlick> Might be a pretty steep shipping fee.
[20:00:05] <flughafen> it'll cost more to ship it to me than the mill itself ;)
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[20:01:38] <FinboySlick> Holy crap, these guys are moving up in the world: http://www.syil.com.cn/
[20:01:48] <FinboySlick> That's a bit of an upgrade from my mill.
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[20:02:44] <flughafen> are servos generally better than stepper motors?
[20:02:52] <FinboySlick> Ah, no, they just built a fancy box around the crappy mill.
[20:03:10] <FinboySlick> flughafen: Yes, but they're also a bit more complicated to deal with.
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[21:09:10] <FinboySlick> sheesh, harmonic drive gears are pretty darn expensive.
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[21:23:52] <CaptHindsight> FinboySlick: can you use used robot parts?
[21:24:52] <FinboySlick> CaptHindsight: Sure. I'm just pondering a head-tilting mechanism for my mill. If I'm going to take it all apart I might as well improve it.
[21:25:04] <FinboySlick> I'd need something pretty thin though like: http://www.ebay.com/itm/HD-40-120-900085-HARMONIC-DRIVE-SYSTEMS-GEAR-GEARHEAD-REDUCER-/281012526223?pt=LH_DefaultDomain_0&hash=item416da6dc8f
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[21:28:58] <CaptHindsight> FinboySlick: whats your budget? What accuracy and repeatability? How much torque?
[21:30:33] <CaptHindsight> you might not be happy with harmonic drive specs for milling
[21:30:34] <FinboySlick> CaptHindsight: No idea. This is a long term idea, not something I plan to do this weekend. I expected the gear to be around 200 bucks. Obviously, as little backlash and highest repeatability possible. This is a 24k high speed spindle so I don't suspect it would need enormous torque.
[21:31:28] <mrsun_> yeah! got homing working for X and Y so far ! =)
[21:31:52] <FinboySlick> CaptHindsight: Could I use a dual-pinion spur gear to eliminate backlash?
[21:32:36] <FinboySlick> A bit like the do with spring-loaded rack/pinion setups on router tables.
[21:32:49] <CaptHindsight> be back in a bit
[21:39:15] <WalterN> yay, more work for the shop
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