#linuxcnc | Logs for 2019-04-11

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[17:35:28] <MacGalempsy> hello
[17:37:53] <Tom_L> Rab, http://tom-itx.no-ip.biz:81
[17:38:40] <Tom_L> the chain is welded to the outer edge of the inner parts
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[17:40:15] <gloops> think ill try these drivers https://www.ebay.co.uk
[17:41:45] <gloops> upgrading to bigger motors comes at a cost, drivers, power supplies, bigger pulleys and belts
[17:42:37] <Tom_L> why are you upgrading?
[17:42:56] <gloops> mainly because i got some nema 34s cheap heh
[17:43:03] <Tom_L> oh
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[17:43:21] <Tom_L> my nema 23 are pretty strong is why i asked
[17:43:24] <gloops> but about £200 to spend on the bits to use them
[17:43:46] <Tom_L> i'm still only driving them at 2.5A i think
[17:43:47] <gloops> it could do with a bit more guts for the gantry
[17:44:26] <Tom_L> https://www.ebay.com
[17:44:27] <gloops> ive got mine on the max amps and volts, its ok but could be better
[17:44:47] <Tom_L> those same ones also come in .25" shaft
[17:44:55] <Tom_L> but i wouldn't
[17:45:17] <gloops> these are only 4.5 nM nema 34s, up from 3nM 23s
[17:45:46] <Tom_L> dunno what that is in in/oz :)
[17:46:41] <gloops> about 700oz
[17:47:26] <gloops> but will need wider belts, therefore wider pulleys etc, adds up
[17:47:28] <Tom_L> 637
[17:47:45] <Tom_L> so a little beefier than mine
[17:47:45] <gloops> not much more than yours then
[17:48:43] <Tom_L> and you could probably use the drivers / supply you have
[17:49:24] <gloops> they red light at 50v, to get the full power from the nema 34s will need more than that
[17:49:31] <gloops> 6 amp 80v
[17:49:54] <Tom_L> i'm running mine at 48v
[17:50:13] <Tom_L> iirc the geckos will go up to 80
[17:50:45] <Tom_L> but mine are plenty for my mill as they are
[17:50:58] <gloops> mine are at the same now, i could just put more volts into these motors but would still need beefier drivers
[17:51:23] <gloops> its all the stuff i should have bought when i was building it, but didnt like spending
[17:51:59] <Tom_L> i don't like it either but it's done now
[17:53:20] <gloops> well im in no rush, ill just get everything ready to swap over one day
[17:53:55] <Tom_L> those were the biggest nema23 i could find
[17:55:32] <gloops> i dont think ive seen any stronger nema 23s
[17:55:54] <gloops> anyway bedtime here
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[18:01:09] <_abc_> Ok G92 and g54 problems sorted. Bye for now
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[19:14:24] <_unreal_> shhhh
[19:18:15] <Roguish> the6
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[19:39:01] <_unreal_> doing more compiling finally
[19:45:38] <Tom_itx> jthornton?
[19:45:47] Tom_itx is now known as Tom_L
[19:47:14] <jthornton> yo
[19:47:45] <Tom_L> where do i need to put the threadmill so i can execute it?
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[19:49:25] <Tom_L> also i posted a sample gcode with a couple threads
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[19:59:49] <jthornton> you just run it like any other qtpyvcp gui
[20:00:30] <_unreal_> jthornton, I'm going nuts trying to get the GPIO working with linuxcnc
[20:00:32] <Tom_L> i copied the thread_mill to my config directory and it created an icon but doesn't do anything
[20:00:38] <_unreal_> I have a tinkerboard
[20:00:48] <jthornton> did you install it?
[20:01:13] <_unreal_> thats just it I need to find the right version I guess? hal_gpio_something.c file
[20:01:15] <jthornton> from the threadmill directory pip install -e .
[20:01:20] <Tom_L> oh
[20:01:45] <jthornton> sorry no instructions worked too much on coding
[20:02:04] * jthornton goes to tuck the hens in and do a bed check
[20:02:17] <_unreal_> jthornton, are you talking to me or Tom_L
[20:02:21] <_unreal_> on the coding?
[20:02:25] <Tom_L> me
[20:02:38] <_unreal_> :) but what about me
[20:02:40] <_unreal_> ;)
[20:03:09] <_unreal_> ugh... compiling an other version of armbian with FULL PREEMPT RT
[20:06:27] * jthornton wanders upstairs to finish cooking dinner
[20:06:31] <jthornton> Tom_L: you got it going?
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[20:07:02] <Tom_L> no
[20:07:29] <Tom_L> i got it in a /home/tom/thread_mill directory
[20:07:37] <Tom_L> and ran pip install -e .
[20:07:56] <jthornton> from that directory?
[20:08:06] <Tom_L> yes
[20:08:20] <jthornton> it should be installed then
[20:08:39] <jthornton> do you have the qtpyvcp sims like xyz
[20:08:41] <Tom_L> doesn't show up in the linux sims
[20:08:50] <Tom_L> yeah
[20:09:20] <jthornton> did you copy the thread_mill config directory to linuxcnc/configs?
[20:09:34] <Tom_L> well i did but now i don't
[20:09:48] <jthornton> ???
[20:09:52] <Tom_L> just a sec
[20:10:15] <jthornton> it's two steps without an install script
[20:11:29] <Tom_L> ok it tries to run
[20:11:37] <jthornton> and?
[20:11:52] <Tom_L> unhandled exception importerror
[20:12:13] <jthornton> sudo apt install python-pyqt5.qtsql
[20:12:23] <jthornton> you need qtsql
[20:12:59] <Tom_L> k
[20:13:16] <jthornton> I need to go check the taco meat
[20:13:19] <Tom_L> that's better
[20:13:30] <Tom_L> but for some reason i lost my other examples
[20:13:40] <Tom_L> not worried about that right now though
[20:14:44] <jthornton> odd
[20:14:52] <jthornton> anyway it's chow time here
[20:18:24] <Tom_L> you're starting your helix in a different quadrant than i did :)
[20:19:47] <Tom_L> mine is X0.0785 Y0.0 and yours is X0.0 Y-0.1080
[20:20:36] <Tom_L> gonna be harder to compare
[20:36:23] <Tom_L> i don't specify the P word in mine... default is 1 anyway
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[20:38:35] <Tom_L> not sure why for 1 thread 1 pass your code has 3 G3's in it
[20:40:17] <Tom_L> i start my helix offset on the X axis and you start on Y
[20:44:10] <Tom_L> in my macro: AS=0 Angle Start
[20:44:27] <Tom_L> AE=0 so one full turn
[20:44:45] <Tom_L> also defined with FT=1
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[20:50:57] <Tom_L> i like the percentage passes you did
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[20:57:10] <skunkworks> rigid tapped at 2000rpm...
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[21:12:18] <gregcnc> how many passes are you guys doing for thread milling?
[21:16:17] <Tom_L> user selectable but i did 3 on my 3/4 16
[21:16:52] <Tom_L> he's setting his program up using percentages but i did equal spaced passes to begin with
[21:16:59] <Tom_L> i may go back and look at it again
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[21:18:06] <Tom_L> http://tom-itx.no-ip.biz:81
[21:18:14] <Tom_L> the left is steel, right alum
[21:18:23] <gregcnc> chip load is so low there is rarely a need for more than 2 passes, cutting equal area vs equal depth is a good idea
[21:19:05] <Tom_L> first time on my mill so i didn't wanna risk it
[21:19:22] <Tom_L> at least until i get a feel for it
[21:20:16] <gregcnc> one thing to look for is a tool with some tip radius or flat. sharp point tools chip easily
[21:20:29] <Tom_L> yeah
[21:21:01] <Tom_L> i think these have a .020 flat
[21:21:28] <gregcnc> that's a lot and will limit how maximum tpi you can cut
[21:21:55] <gregcnc> the tool should have a range spec'd
[21:21:55] <Tom_L> err i meant .002
[21:21:59] <skunkworks> https://www.youtube.com
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[21:22:09] <skunkworks> sorry - it is kinda crappy
[21:22:13] <Tom_L> they do spec a range on mine
[21:22:48] <gregcnc> spindle runs nice a quiet
[21:24:09] <gregcnc> that's nice tapping
[21:25:44] <skunkworks> 750w spindle
[21:26:15] <Tom_L> feel free to pack it up and send it to me :)
[21:26:21] <skunkworks> heh
[21:27:17] <gregcnc> I think I need a new belt for the lathe. It sounds like bearings are dying, but has new bearings in the headstock and motor.
[21:27:21] <Tom_L> does the spindle even get up to speed tapping?
[21:27:24] <Tom_L> i doubt it..
[21:27:36] <gregcnc> sure
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[21:35:29] <skunkworks> Tom_L: ? it is running at 2k
[21:43:09] <Tom_L> just seemed like it would be done tapping before it got up to speed
[21:43:33] <flyback> man
[21:43:42] <flyback> I was watching a video on a company that rebuilds spindles
[21:43:52] <flyback> and showed some of the dipshitted things people do mistreating them
[21:43:55] <flyback> disgusting
[21:44:29] <gregcnc> shit happens
[21:45:37] <flyback> no some of this was no excuse
[21:45:48] <flyback> but I will blame canada for the hell of it
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[22:24:50] <skunkworks> Tom_L: it is up to speed before it started tapping
[22:25:10] <Tom_L> ok, no sound here so it's hard to tell
[22:26:34] <_unreal_> any one using tinker boards?
[22:27:29] <_unreal_> still compiling
[22:48:32] <Tom_L> hmm, i wonder if jt is offsetting the tool radius in his calcs
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[23:14:53] <_unreal_> does any one in here use tinkerboard?
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[23:16:35] <_unreal_> rmu, you live?
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