#linuxcnc | Logs for 2014-05-21

[00:00:23] <CaptHindsight> the gears are a soft as butter
[00:00:45] <zeeshan> lol
[00:00:48] <zeeshan> non hardened
[00:00:50] <PetefromTn_> Thats kinda funny I change gears when the machine is running all the time, actually as it slows to a stop...
[00:00:50] <CaptHindsight> more like alumasteel :)
[00:01:12] <PetefromTn_> Have had this thing for over a decade.
[00:01:50] <zeeshan> pete you're gonna hate my X axis setup
[00:01:51] <zeeshan> :P
[00:01:57] <PetefromTn_> I am sure.
[00:02:03] <zeeshan> haha its so ghetto
[00:02:25] <PetefromTn_> whatever works in the hood..
[00:02:57] <zeeshan> i need drive pulleys for the x axis
[00:03:03] <zeeshan> i tried ordering from sdp-si
[00:03:09] <zeeshan> they quoted me 85$ shipping
[00:03:12] <zeeshan> for 2 pulleys and a belt
[00:03:13] <CaptHindsight> open air chain drive?
[00:03:17] <zeeshan> so im trying to find one locally
[00:03:20] <zeeshan> no XL type pulleys
[00:03:30] <CaptHindsight> with matching pleather pulleys?
[00:03:36] <zeeshan> ??
[00:04:02] <PetefromTn_> why was the shipping so much?
[00:04:14] <zeeshan> i dont know
[00:04:16] <zeeshan> theyre retarded?
[00:04:20] <zeeshan> theyre 500 miles from me
[00:04:21] <zeeshan> or less
[00:04:24] <PetefromTn_> I just overnighted the mesa cards from cali to Tennessee and It was about $50.00
[00:04:41] <PetefromTn_> did you call them?
[00:04:57] <zeeshan> no
[00:05:00] <zeeshan> i got an email with the quote
[00:05:04] <PetefromTn_> I bought all my pullies and timing belts from them and do not remember any problems.
[00:05:05] <zeeshan> and they asked me if i would like to proceed
[00:05:09] <zeeshan> i replied
[00:05:14] <zeeshan> 'No thank you.'
[00:05:17] <zeeshan> =D
[00:05:23] <PetefromTn_> Just call them on the phone.
[00:05:30] <zeeshan> yea but youre in USA mate
[00:05:38] <zeeshan> https://www.youtube.com/watch?v=9lwpug20LTQ
[00:06:12] <zeeshan> dont mind the shakey cam
[00:06:16] <zeeshan> i was using my left hand to control the mouse :P
[00:06:31] <CaptHindsight> http://www.ebay.com/itm/Nakamura-TMC-3-Turning-Center-CNC-Lathe-Parts-Machine-/161311212611
[00:07:50] <CaptHindsight> comes with http://i.ebayimg.com/00/s/MTI5Nlg5Njg=/z/LBEAAOxyZzlTeiY0/$_57.JPG :)
[00:08:01] <zeeshan> XL timing belts should be pretty standard no?
[00:08:09] <zeeshan> i inquired from 2 different places locally
[00:08:14] <zeeshan> they havent gotten back to me :/
[00:08:19] <zeeshan> they were familiar with them
[00:08:31] <CaptHindsight> yesh XL what size do you need?
[00:08:32] <PetefromTn_> http://www.youtube.com/watch?v=Mrx24jofi0w
[00:08:37] <zeeshan> 15 tooth
[00:08:39] <zeeshan> 30 tooth
[00:08:42] <zeeshan> er
[00:08:50] <zeeshan> 15 tooth, 32 tooth and 118 teeth belt
[00:08:57] <zeeshan> PetefromTn_: rofl
[00:09:09] <zeeshan> perfect movie quotation
[00:09:23] <PetefromTn_> ;)
[00:09:30] <CaptHindsight> http://www.ebay.com/itm/CNC-LATHE-TRAUB-TND-360-TURNING-CENTER-WITH-TX8-CONTROL-NICE-HEAVY-DUTY-LATHE-/121330035749
[00:09:32] <PetefromTn_> that thing looks ROUGH...
[00:09:49] <zeeshan> http://i.ebayimg.com/00/s/MTI5Nlg5Njg=/z/LBEAAOxyZzlTeiY0/$_57.JPG
[00:09:53] <zeeshan> that drill press looks nice though
[00:10:25] <CaptHindsight> or $50 if you know what you are looking for
[00:10:42] <PetefromTn_> damn thing is 40hp...
[00:10:48] <PetefromTn_> Could not run it if I wanted to..
[00:11:00] <zeeshan> whats your spindle hP?
[00:11:08] <PetefromTn_> 7.5
[00:11:13] <zeeshan> i should know this
[00:11:19] <zeeshan> spent enough time on your vfd
[00:11:20] <zeeshan> !
[00:11:37] <CaptHindsight> http://www.ebay.com/itm/New-GMC-32-x-120-Heavy-Duty-Precision-Gap-Bed-Lathe-Model-GT-32120-/151289479044 good deal here
[00:11:49] <zeeshan> wow
[00:11:49] <PetefromTn_> I need what is commonly referred to as a commercial pussy slantbed lathe for my shop.
[00:11:50] <zeeshan> whats a sexy lathe
[00:12:06] <CaptHindsight> surprised it's only 15HP
[00:12:34] <zeeshan> 15hp is a lot!
[00:12:36] <PetefromTn_> I might be able to run a 20hp or so MAYBE..
[00:12:41] <zeeshan> with 3 hp you can easily do 1" depth of cuts
[00:12:45] <zeeshan> with a proper tool bit
[00:12:57] <zeeshan> =D
[00:13:01] <PetefromTn_> in butter?
[00:13:02] <CaptHindsight> i have cordless drill with 15HP :)
[00:13:04] <zeeshan> no in steel
[00:13:11] <zeeshan> PetefromTn_: ive been following the youtub evideos
[00:13:14] <zeeshan> of 'abom'
[00:13:19] <zeeshan> oxtool and shadonhkw
[00:13:24] <zeeshan> they're all pushing their lathes haha
[00:13:34] <PetefromTn_> never heard of em.
[00:13:36] <zeeshan> shadonhkw did a 1/2" depth of cut
[00:13:40] <zeeshan> with his 1.5HP lathe
[00:14:09] <PetefromTn_> at what fractional feedrate?
[00:14:15] <CaptHindsight> PetefromTn_: like this? http://www.ebay.com/itm/South-Bend-16-Raised-to-24-x-8-7-Lathe-Fwd-Rev-Controls-Mounted-on-Tailstock-/350717075412
[00:14:15] <zeeshan> 10 thou
[00:14:33] <zeeshan> the 1" depth of cut on the big lathe was at 5 thou
[00:14:41] <PetefromTn_> what is that? a dinosaur?
[00:14:58] <zeeshan> haha
[00:15:00] <zeeshan> that looks like a wood lathe
[00:15:39] <CaptHindsight> http://www.ebay.com/itm/NEW-BIRMINGHAM-YCL-26120-26-36-x-120-GAP-BED-ENGINE-LATHE-w-4-1-8-SPDL-HOLE-/151289479279 lotsa lathe for $20k
[00:15:46] <PetefromTn_> http://www.ebay.com/itm/Okuma-Howa-2-Axis-CNC-Turning-Center-/111132619305?pt=LH_DefaultDomain_0&hash=item19e0053229
[00:16:10] <PetefromTn_> thatsa chinese POS like I have now only overgrown...
[00:16:31] <zeeshan> slant bed lathes are so nice
[00:16:37] <zeeshan> because of the damn tool turrent
[00:16:46] <PetefromTn_> I need to find an okuma like that which has a blown control.
[00:16:49] <zeeshan> the tool turrets that are live are even better!
[00:16:49] <CaptHindsight> PetefromTn_: are you going to put those free little hands to work? :)
[00:17:02] <PetefromTn_> huh?
[00:17:16] <zeeshan> huh to me
[00:17:17] <zeeshan> or CaptHindsight
[00:17:18] <CaptHindsight> kids are out for the summer?
[00:17:40] <PetefromTn_> oh hell no they are busy playing video games and watching spongebob etc.
[00:17:54] <CaptHindsight> http://www.ebay.com/itm/Mazak-Multiplex-620-CNC-Lathe-Turning-Center-BALL-SCREW/131186437284
[00:18:12] <CaptHindsight> can you get anything done?
[00:18:27] <PetefromTn_> not usually...
[00:18:37] <zeeshan> PetefromTn_: you think 150 ipm rapid is too much
[00:18:40] <zeeshan> how you saw it in the video?
[00:18:45] <zeeshan> im thinking 100ipm might be better?
[00:18:50] <PetefromTn_> why would it be too much>
[00:18:53] <zeeshan> i dont know
[00:19:02] <zeeshan> ive never seen my carriage move that fast before in my life
[00:19:06] <zeeshan> so it looks abnormal to me
[00:19:16] <zeeshan> i feel like it'll build up friction or something
[00:19:18] <zeeshan> on the ways :P
[00:19:44] <CaptHindsight> I used to get maybe 1-2 hours free until some emergency, revolt, cries of starvation etc etc
[00:19:57] <PetefromTn_> http://www.youtube.com/watch?v=Vbm9sYUMc4g
[00:20:21] <zeeshan> PetefromTn_: you have a movie quote for everything?
[00:20:22] <zeeshan> lol
[00:20:26] <PetefromTn_> hehe
[00:20:39] <PetefromTn_> honestly I am quite happy to be home with them.
[00:21:25] <zeeshan> rofl
[00:21:26] <PetefromTn_> My shop is right outside the door and if they need something they come in there and bother me but thats okay.
[00:21:27] <zeeshan> the space ship says
[00:21:31] <zeeshan> 'we brake for no body'
[00:21:32] <zeeshan> haha
[00:21:40] <PetefromTn_> classic movie.
[00:21:40] <CaptHindsight> PetefromTn_: I did it for 20 years
[00:21:56] <PetefromTn_> I hope to do it for the rest of my life LOL.
[00:22:19] <CaptHindsight> heh, I check back in 10 or so :)
[00:22:23] <PetefromTn_> If I am not able to do it with CNC machining I will do it with woodworking.
[00:22:38] <zeeshan> can you guys imagine
[00:22:42] <PetefromTn_> Honestly I have never been happy working for other people.
[00:22:49] <zeeshan> what would happen if we all joined together and started a company together
[00:22:56] <zeeshan> we'd rule the world
[00:22:57] <zeeshan> !
[00:23:01] <PetefromTn_> There is always some bullshit and lots of excuses why you get the shaft.
[00:23:22] <PetefromTn_> I'm game LOL'
[00:23:33] <zeeshan> seriously
[00:23:35] <CaptHindsight> PetefromTn_: it's really great except for some customers
[00:23:41] <zeeshan> everyone in this room has some serious talent
[00:24:06] <zeeshan> except that guy who was asking what lathe to purchase every hour
[00:24:12] <PetefromTn_> I have been doing custom cabinetry work for over a decade for myself and only had ONE customer I would like to kick his ass...
[00:24:40] <PetefromTn_> The rest are friends or good acquaintences.
[00:25:14] <PetefromTn_> I learned a lot working in that job shop for a bit but I also learned I have a LOT to learn LOL...
[00:26:10] <CaptHindsight> a client hinted at hiring me recently, I told them I'm not really sure what I'd do there after a few weeks
[00:26:25] <zeeshan> CaptHindsight: steal their stuff and run!
[00:26:43] <CaptHindsight> it was more the other way around
[00:26:52] <PetefromTn_> LOL
[00:27:03] <CaptHindsight> employees are cheaper than contract
[00:27:18] <PetefromTn_> One of the nicer guys in the shop called me yesterday at like 7:30 wanting to know if I knew where his parellel was.
[00:27:40] <zeeshan> PetefromTn_: i hope you stole it!
[00:27:41] <PetefromTn_> I was like its gotta be there man I did not take it. I have my OWN parallels LOL
[00:28:02] <PetefromTn_> He later called me back and apologized.
[00:28:16] <PetefromTn_> Apparently one of the other guys BORROWED it and did not put it back.
[00:28:55] <PetefromTn_> Right now I am building a spring compressor.
[00:29:03] <zeeshan> why
[00:29:18] <PetefromTn_> so I can take apart this new Spring piston air rifle I just got.
[00:29:33] <zeeshan> use some c-clamps
[00:29:34] <PetefromTn_> without having the spring fly into my face...
[00:29:34] <zeeshan> call it a day :D
[00:29:37] <zeeshan> haha
[00:30:11] <PetefromTn_> I saw a simple design on the net where they made a small press with 1/2 inch allthread rod and some steel plate.
[00:30:22] <zeeshan> https://www.youtube.com/watch?feature=player_embedded&v=kY56ib3I-ew
[00:30:23] <zeeshan> ^
[00:30:25] <PetefromTn_> I am making it like that only adding some angle iron to hold it up.
[00:30:31] <zeeshan> :14 sec
[00:30:33] <zeeshan> for the good part
[00:30:55] <zeeshan> frigging idiot
[00:30:59] <zeeshan> removed it without compressing the spring
[00:30:59] <zeeshan> lol
[00:31:30] <PetefromTn_> LOL I have done something like that...
[00:32:15] <PetefromTn_> I cut a very small bit off the springs in my last fiero to lower it slightly and I had to keep taking it out and putting it back in again. Kinda got tired of it so I just pried it out..
[00:32:23] <zeeshan> lol
[00:32:41] <zeeshan> https://www.youtube.com/watch?feature=player_detailpage&v=CYFOI_UsVxI#t=71
[00:32:42] <zeeshan> another one
[00:32:43] <PetefromTn_> One time it went flying across the shop floor.
[00:32:43] <zeeshan> haha
[00:34:16] <PetefromTn_> Damn that was dangerous.
[00:34:44] <PetefromTn_> This rifle is the RWS model 54 air king... It has quite a spring in it.
[00:34:59] <CaptHindsight> http://www.ebay.com/itm/LATHE-ENCO-110-2075-LATHE-12-X-36-/321387196854 this is model that had the broken pin
[00:35:10] <zeeshan> CaptHindsight:
[00:35:12] <zeeshan> looks like my lathe!
[00:35:12] <zeeshan> :D
[00:35:19] <PetefromTn_> yeah that is like mine too...
[00:35:44] <zeeshan> 3600$ used?
[00:35:45] <zeeshan> hahaha
[00:35:47] <zeeshan> wtf
[00:36:00] <CaptHindsight> isn't that the new price?
[00:36:06] <zeeshan> yea
[00:36:14] <CaptHindsight> heh, good luck
[00:36:18] <zeeshan> that actually looks VERY used
[00:36:33] <PetefromTn_> http://s177.photobucket.com/user/pirellip/media/IMG_20140130_170335.jpg.html I am building one of these...
[00:36:36] <CaptHindsight> mine is missing the rests
[00:36:42] <PetefromTn_> yeah that is crazy price..
[00:36:47] <zeeshan> PetefromTn_: very cool
[00:36:49] <PetefromTn_> might be worth 1500-2k
[00:37:02] <CaptHindsight> need to find a 3-jaw chuck as well
[00:37:17] <zeeshan> just grab a shars
[00:37:30] <PetefromTn_> grab a shits..
[00:37:34] <zeeshan> lol
[00:37:36] <PetefromTn_> I mean shars..
[00:37:41] <zeeshan> phase 2 makes one too
[00:37:47] <zeeshan> thats the one that came with mine
[00:37:52] <zeeshan> runs out 1 thou
[00:38:25] <CaptHindsight> recall the size?
[00:38:33] <PetefromTn_> d14
[00:38:36] <PetefromTn_> 6"
[00:38:38] <zeeshan> yessir
[00:38:53] <zeeshan> its like a 250$ chuck from phase 2
[00:38:57] <zeeshan> w/ the backing plate
[00:39:31] <zeeshan> CaptHindsight: you should get an 8"
[00:39:32] <zeeshan> if you can
[00:39:48] <CaptHindsight> http://www.shars.com/products/view/966/6quot_3_jaw_Self_Centering_Scroll_Lathe_Chucks_D14_Reversible_Jaws
[00:39:57] <zeeshan> see thats not worth it
[00:39:59] <zeeshan> for a shars
[00:40:04] <zeeshan> the phase ii isn't much more..
[00:40:10] <CaptHindsight> http://www.shars.com/products/view/967/8quot_3_jaw_Self_Centering_Scroll_Lathe_Chucks_D14_2_Piece_Jaws
[00:40:15] <zeeshan> http://www.amazon.com/PHASE-II-Accu-Rite-Adjustable-Spacer/dp/B006BCZ4OS
[00:40:27] <zeeshan> i'd personally run an 8"
[00:40:31] <PetefromTn_> that is nice it has removable jaws so you can machine your own...
[00:40:31] <zeeshan> i feel the 6" is too small
[00:40:49] <zeeshan> what do you think pete?
[00:40:54] <PetefromTn_> mine does not have that..
[00:40:56] <CaptHindsight> I'm going to see how accurate it is first
[00:41:26] <CaptHindsight> I ran the it earlier, it sounds fine
[00:41:35] <PetefromTn_> I dunno I like the 8" four jaw so yeah an 8 would be nice but the lathe is kinda underpowered for too large a piece.
[00:41:54] <CaptHindsight> 2hp 1p motor
[00:41:59] <zeeshan> you underate the 2hp too much!
[00:42:10] <zeeshan> but iagree, it needs a 3hp
[00:42:17] <PetefromTn_> yeah it is like chinese mice horsepower.
[00:42:21] <CaptHindsight> heh
[00:42:38] <PetefromTn_> It is a decent lathe tho I can't complain.
[00:42:45] <PetefromTn_> Made TONS of shit on that machine over the years.
[00:42:46] <CaptHindsight> Runout: .0039"
[00:42:54] <zeeshan> CaptHindsight: wow thats terrible
[00:42:54] <zeeshan> :p
[00:43:09] <PetefromTn_> where is that measuered?
[00:43:11] <CaptHindsight> 8" 3 jaw shars
[00:43:22] <PetefromTn_> holy smokes..
[00:43:37] <PetefromTn_> you can bolt your workpiece to the faceplate better than that.
[00:43:44] <zeeshan> haha
[00:43:54] <CaptHindsight> Runout: .003" on the 6"
[00:44:10] <PetefromTn_> three jaws are NOT known for great runout..
[00:44:28] <PetefromTn_> you can get a set tru chuck or a bison that are supposed to be decent.
[00:44:40] <zeeshan> http://www.use-enco.com/1/1/32983-559-114-phase-ii-chuck-rotary-table-accessories.html
[00:44:41] <zeeshan> hmm
[00:44:43] <zeeshan> its even cheaper here?
[00:44:45] <zeeshan> 151$
[00:45:37] <CaptHindsight> http://www.travers.com/63-324-208?Category=UserSearch=63-324-208&gclid=CNX-nIikvL4CFagWMgodVDgAKQ
[00:45:45] <PetefromTn_> This airgun has a neat mechanism to it.
[00:46:07] <CaptHindsight> Chuck runout adjustable to ±.0005" TIR by 3 side screws.
[00:46:19] <PetefromTn_> when you shoot it the whole action slides backwards to absorb the recoil of the spring piston inside it like a howitzer.
[00:46:45] <PetefromTn_> Its kinda cool to shoot it.
[00:46:58] <PetefromTn_> You don't really feel much of anything.
[00:47:07] <zeeshan> ive never shot a gun
[00:47:08] <PetefromTn_> but it is kinda loud tho.
[00:47:11] <zeeshan> okay if i stay here any longer i will pass out
[00:47:14] <zeeshan> you guys talk too much
[00:47:15] <zeeshan> :D
[00:47:17] <zeeshan> gnite\!
[00:47:27] <PetefromTn_> gn8
[00:47:53] <PetefromTn_> CaptHindsight That is not too bad but hard to believe man.
[00:48:31] <PetefromTn_> I better get my butt to bed too. Cya guys later.
[00:50:49] <CaptHindsight> http://www.ebay.com/itm/8-3-JAW-SELF-CENTERING-LATHE-CHUCKS-D1-4-Mounting-Back-2pcs-jaws-0803D4-NEW-/161021953257
[00:51:03] <CaptHindsight> T.I.R.---0.003"
[00:59:52] <archivist> 3 thou! as good as my buggered old southbend
[01:08:03] <CaptHindsight> pretty bad
[01:09:02] <CaptHindsight> whats the point
[01:11:20] <CaptHindsight> http://www.shars.com/product_categories/view/4111106/3Jaw_Direct_Mounting_Series_Chucks 3 looks good compared to others here
[01:16:36] <archivist> I know 3 jaws are never that good but seems a bit on high side for new
[01:24:37] <CaptHindsight> http://img.photobucket.com/albums/v21/zgoo1/MazakMate1.jpg
[01:54:33] <Deejay> moin
[03:57:03] <SpeedEvil> The 3-jaw on my lathe is quite accurate.
[03:57:14] <SpeedEvil> Unfortunately, the spindle has a whole degree and a half of bend.
[03:57:43] <SpeedEvil> It was used (not by me) to turn a rather large wooden bowl, and there was an incident.
[07:51:05] <XXCoder1> semi steel. interesting.
[08:13:59] <Jymmm> is that like semi-human (pre-coffee) ?
[08:14:11] <XXCoder1> lol
[08:14:20] <XXCoder1> saw link to chuck that was semi steel
[08:14:33] <XXCoder1> it stated it had chrome so maybe chrome-steel alloy?
[08:14:44] <Jymmm> oh, chinglish?
[08:15:01] <XXCoder1> gonna run time to drive to work
[08:17:25] <Jymmm> Is there such a thing as an inexpensive non-contact probe?
[08:41:35] <eren_basturk> How can I see only x axis on linuxcnc gui when it handling a g code?
[08:42:14] <eren_basturk> or y or z . How can do only one axis when Linuxcnc running?
[08:45:38] <eren_basturk> can someone has a knowledge about that?
[09:20:28] <CaptHindsight> eren_basturk: what do you see when you choose the P (perspective view) in the task bar (between the cone and the Y)?
[10:01:48] <PetefromTn_> Morning folks..
[10:02:06] <zeeshan> hi
[10:02:09] <zeeshan> change your ebay passwords
[10:02:10] <PetefromTn_> Well it has been a very good morning for me here..
[10:02:15] <zeeshan> they got hacked!
[10:03:07] <PetefromTn_> I got the new 7i77 installed and wired up my spindle cooling fan relay, installed all the new relay ice cubes and just got done testing the machine. EVERYTHING WORKS!!! YEAH YIPPEE YEEHAW !!
[10:03:12] <pcw_home> all?
[10:03:24] <zeeshan> pcw_home: according to cnn.com
[10:03:30] <zeeshan> unknown amount got hackewd
[10:03:32] <pcw_home> lovely
[10:03:34] <PetefromTn_> I cannot tell you how happy I am that I did NOT blow any of the new servo drives or spindle drive.
[10:03:59] <zeeshan> nice PetefromTn_!
[10:04:00] <zeeshan> :]
[10:04:29] <PetefromTn_> pcw_home Thanks so much for your help with this screwup I did.
[10:04:47] <PetefromTn_> Now thankfully I can get back to making some parts and some money.
[10:05:32] <PetefromTn_> It was getting to the point where I was gonna have to tell the customers about it and have to turn them away until I could get it fixed.
[10:05:41] <PetefromTn_> But now I am ready to make parts again.
[10:05:47] <pcw_home> NP, I didn't think you would have fired anything except the field I/O section of the 7I77
[10:05:54] <PetefromTn_> I just got thru warming up the spindle
[10:06:01] <pcw_home> s/fired/fried/
[10:06:02] <PetefromTn_> You build that card right man..
[10:06:14] <PetefromTn_> whatever you did it saved my expensive bits.
[10:06:33] <PetefromTn_> I got the new cards in real quick too so I was able to get it fixed quickly.
[10:06:46] <PetefromTn_> could have been a disaster with what I did.
[10:07:05] <PetefromTn_> I removed the old 7i77 card and I want to send it back to you to see if you can fix it like you said.
[10:07:55] <PetefromTn_> I looked at it and there do not seem to be any burned spots or any obvious physical damage to the card.
[10:08:16] <PetefromTn_> Hopefully it is just some chip or component you can swap out and be back running again.
[10:08:17] <CaptHindsight> zeeshan: "The database, which was compromised between late February and early March, included eBay customers’ name, encrypted password, email address, physical address, phone number and date of birth." thanks for telling us so soon :)
[10:08:26] <zeeshan> lol
[10:08:30] <zeeshan> ebay is retarded
[10:08:50] <PetefromTn_> huh I have bought several items since that time frame and not had any problems.
[10:09:23] <PetefromTn_> The 24 volt power supply I blew up for one and some tools on ebay in the last two weeks.
[10:09:31] <zeeshan> PetefromTn_: thats the point
[10:09:36] <zeeshan> its a silent attack
[10:09:45] <zeeshan> which doesn't mean you'd know your password was compromised
[10:09:52] <zeeshan> means
[10:10:19] <zeeshan> then one day a couple months after
[10:10:32] <zeeshan> you notice someone using your password to access your paypal!
[10:10:40] <zeeshan> cause a lot of keep their paypal and ebay password the same
[10:10:43] <zeeshan> all you need is their email
[10:11:25] <CaptHindsight> they didn't get payment information, but they got everything they needed to apply for credit in your name
[10:17:40] <CaptHindsight> I'm running 12.04 with 2.5.4 and the 3.44.55 RTAI in Virtualbox
[10:18:00] <PetefromTn_> jeez that is NOT good.
[10:18:15] <CaptHindsight> it's like running a slot machine, every time it starts up it acts differently
[10:18:36] <CaptHindsight> it's just for the sim
[10:18:38] <PetefromTn_> What the hell is going on with these big websites everyone is getting hacked to pieces.
[10:19:06] <PetefromTn_> Its like they did not even think thru the security sometimes.
[10:19:21] <CaptHindsight> I had 3 credit cards compromised in the past 2 months
[10:19:41] <CaptHindsight> and I hardly even use them
[10:20:17] <PetefromTn_> It's like a hacker free for all...
[10:20:38] <CaptHindsight> they are run by control freaks that want your info but don't protect it at all
[10:20:50] <PetefromTn_> I cannot tell you guys how happy I am that the mill is back up and running.
[10:21:21] <PetefromTn_> CaptHindsight Yeah right... morons.
[10:21:54] <PetefromTn_> I really need to fix the small leak in my air pressure setup on the back of the machine.
[10:22:24] <PetefromTn_> It has a small water seperator that has a built in low pressure switch but the lexan or plastic vial is cracked.
[10:22:39] <PetefromTn_> I tried to epoxy it shut but it still leaks enough to be annoying.
[10:22:53] <CaptHindsight> i found a great deal for new 22mm switches on fleabay, they listed as ships from USA...
[10:23:10] <PetefromTn_> And my compressor is right next to where I stand when I run the machine and every time it comes on it scares the piss out of me LOL
[10:23:27] <PetefromTn_> what kinda switches?
[10:23:30] <CaptHindsight> after they ship the tracking info shows them starting out in Maui, HI
[10:23:54] <CaptHindsight> odd place to have a warehouse
[10:24:21] <PetefromTn_> why have you never seen magnum PI... there are lots of seedy warehouses in hawaii LOL
[10:25:13] <PetefromTn_> I need to purchase a lot of nice heavy duty buttons for my control panel. I have since realized that I want some buttons to mash for certain things.
[10:26:05] <CaptHindsight> industrial push button types from cutler hammer, telemacnique etc
[10:26:19] <PetefromTn_> I am gonna machine a nice aluminum plate to accept the buttons as well as the estop and my MPG. Right now they are mounted to the original plate I made for it. I want to make a removable plate underneath the monitor to locate all this stuff and make it look cool.
[10:26:42] <PetefromTn_> my machine had a lot of telemechanique stuff in it inside the electronics cabinet.
[10:26:48] <PetefromTn_> Good stuff I guess.
[10:26:58] <CaptHindsight> http://www.automationdirect.com/adc/Shopping/Catalog/Pushbuttons_-z-_Switches_-z-_Indicators/22mm_Plastic
[10:26:59] <PetefromTn_> I have heard people using buttons from arcade machines too
[10:27:46] <PetefromTn_> Ooh some of those look nice.
[10:27:50] <CaptHindsight> the plastic versions are all under $20
[10:27:54] <PetefromTn_> Not sure I even need illuminated.
[10:28:03] <CaptHindsight> non-ill are ~$10
[10:28:35] <PetefromTn_> One thing I also want to get is a speaker or buzzer to indicate when I have pressed a button or anything.
[10:28:54] <CaptHindsight> woopie cushion
[10:29:05] <PetefromTn_> When the machine is running and making noise it is nice to be able to hear an audible confirmation of a button press.
[10:29:08] <CaptHindsight> dare to be different
[10:29:43] <PetefromTn_> sure man why not a lion roar or something...
[10:29:54] <PetefromTn_> ;0
[10:31:28] <CaptHindsight> just random audio clips and sounds
[10:32:49] <PetefromTn_> I guess that could be done inside linux somehow pretty easily. I just want a simple audible click or beep to let me know I actually hit the button and the computer acknowledges that.
[10:32:52] <CaptHindsight> maybe for the next fest, linuxcnc soundboard plugin
[10:33:09] <PetefromTn_> I would like to attend the next fest.
[10:33:18] <PetefromTn_> We can have it here at my house LOL.
[10:34:57] <PetefromTn_> Looks like the air rifle I just purchased has done very well in the recent American Airgun Field Target competitions. That is encouraging. Hopefully I can tune my rig up and get it shooting well and be able to have a shot.
[10:44:31] <CaptHindsight> http://www.mouser.com/Electromechanical/Switches/Pushbutton-Switches/_/N-5g30?P=1z0z812 wider variety in other sizes and styles
[10:45:17] <zeeshan> http://www.kijiji.ca/v-power-tool/markham-york-region/balldoor-bench-grinder/594330570?enableSearchNavigationFlag=true
[10:45:19] <zeeshan> is this a good deal
[10:46:17] <CaptHindsight> does it come with a bridge?
[10:52:03] <CaptHindsight> https://tinyurl.com/mxpt976 Newark stocks about 1000 different PB switches as well
[11:24:13] <CaptHindsight> http://www.ebay.com/itm/351039923110 live centers with .0002" runout, but the 3-jaw chucks are .003"
[11:25:19] <zeeshan> lol
[11:25:25] <zeeshan> theyre a different mechanism though!
[11:37:50] <PetefromTn_> I have a live center on my lathe that looks identical to that one. Works fine.
[11:38:16] <archivist> post one to me I want one
[11:38:48] <archivist> 46 dollars shipping to me!
[11:40:51] <archivist> I have a job to do this week on the southbend, 8 stub axles for farm trailers and am set up with a horrible dead centre
[11:45:29] <PetefromTn_> Ooh that sucks..
[11:46:23] <PetefromTn_> What does a stub axle for a farm trailer look like? Does it not span the width and mount only on one side or something?
[11:51:14] <archivist> PetefromTn_, just the bit through the wheel and enough to weld into a tube that goes to the other side of the trailer
[12:17:55] <PetefromTn_> aah okay.
[12:18:22] <PetefromTn_> nice.
[12:19:05] <archivist> not nice when its metric and machines screw cutting is english
[12:24:28] <zeeshan> archivist: CNC my friend cnc !
[12:25:00] <archivist> too damned big to fit the cnc lathe :(
[12:32:26] <IchGuckLive> hi all B)
[12:35:55] <IchGuckLive> CaptHindsight: where question from eren today on seeing of axis
[12:36:37] <IchGuckLive> PetefromTn_: you are the man of the Day
[12:38:02] <MrHindsight> archivist: do you have any better luck getting parts directly from China? The shipping to the USA is really low. It costs me more from California than from China.
[12:38:52] <archivist> MrHindsight, silly cheap from china to the uk too
[12:39:40] <IchGuckLive> as in germany also low cost china parts are the wayto a good cheep cnc
[12:40:20] <archivist> sell a small quartz clock movement for £2.5, the post is £2.6 for a small parcel
[12:40:25] <archivist> I sell
[12:40:55] <IchGuckLive> archivist from IK to germany it took 28days ;-)
[12:41:05] <IchGuckLive> ebay HK
[12:41:19] <IchGuckLive> UK -> Germany
[12:41:31] <MrHindsight> USA to Germany parcel post is >30 days
[12:41:53] <IchGuckLive> i got a hint on this seller towards ebay as part stationed and sold from UK HA Ha
[12:42:28] <PetefromTn_> IchGuckLive How am I the man of the day? LOL
[12:42:46] <MrHindsight> the bad side of buying direct from China is they have a misleading ad
[12:42:58] <IchGuckLive> 7i77 in first atampt
[12:43:09] <MrHindsight> the return shipping costs to China from USA are high and slow
[12:43:45] <MrHindsight> so it's common suppliers there to make deals with you if you aren't happy for lower cost items <$50
[12:44:23] <MrHindsight> $50 item with shipping might cost $20 for return postage
[12:44:52] <IchGuckLive> thats why they guessing you take even more fault parts
[12:45:09] <IchGuckLive> i got a LM10UU 100 items that whee crap
[12:45:30] <MrHindsight> at least on fleaby you can post negative feedback
[12:45:59] <IchGuckLive> ir jymm on its laser board maybe with used Eleectronic chips ore fault electronic on cheep new items
[12:46:23] <MrHindsight> I usually have someone local buy it for me if I'm not there
[12:46:34] <IchGuckLive> MrHindsight: if the item is over the month period you got no chance if you diddent open a case
[12:46:39] <MrHindsight> locals get better pricing as well
[12:47:03] <IchGuckLive> agree on that but they get also crap parts
[12:47:11] <Jymmm> ?
[12:47:18] <MrHindsight> yeah, most items from China get here in <7 days
[12:47:54] <Jymmm> IchGuckLive: ?
[12:48:24] <MrHindsight> IchGuckLive: nah, he has a quality board
[12:48:43] <MrHindsight> Jymmm: any further debug news?
[12:49:11] <Jymmm> MrHindsight: Not yet, I think I need to hit Fry's Rental dept for a scope
[12:49:22] <IchGuckLive> Jymmm: all clear did you find a answer on laser X board fail
[12:49:48] <Jymmm> IchGuckLive: Not yet, I think I need to hit Fry's Rental dept for a scope
[12:50:36] <IchGuckLive> Jymmm: look at army elecronic resale they got 4 line scopes for 50USD
[12:50:53] <IchGuckLive> i got here 3 of them uge old but realy good stuff
[12:51:38] <IchGuckLive> as they change things like that in regular timescales
[12:58:13] <tjtr33> is my beagleboard revC? is there a way to see soemthing on the pcb? maybe U12 chip?
[13:14:45] <Jymmm> tjtr33: Google is your comrad http://elinux.org/Beagleboard:BeagleBoard-xM#Rev_C
[13:17:35] <kfoltman> is it just me, or are the pololu speedstick clones extremely easy to destroy?
[13:18:18] <kfoltman> stepstick, rather
[13:18:22] <archivist> a lot of the cheap stuff is easy to destroy
[13:18:39] <kfoltman> I burned 2 or 3 different ones
[13:19:34] <kfoltman> the makeblock driver and the big hobbycomponents are much more resistant, but they're also much larger
[13:19:38] <tjtr33> thx Jymmm i'm knee deep in the cxls bom from that page. the visible side of the chip dont resemble the bom a-tall
[13:19:39] <archivist> how, over volt, disconnect motor while powered, over current, no heatsink etc
[13:19:57] <kfoltman> archivist: lousy motor connection, lousy power connection
[13:20:05] <kfoltman> basically, during quick and dirty tests
[13:20:18] <jt_key_west> Hello from Key West
[13:20:36] <IchGuckLive> how is the weather in FL
[13:20:43] <archivist> back emf kills chips without that dont have good protection
[13:20:46] <Tom_itx> greetings JT
[13:21:02] <jt_key_west> beautiful weather
[13:21:10] <pcw_home> doctor it hurts when I do this....
[13:21:15] <IchGuckLive> jt_key_west: dont forget hurricans is not best guess on CNC
[13:21:22] <archivist> kfoltman, a bad connection is a common killer
[13:21:24] <jt_key_west> Not as hot as I expected
[13:21:36] <jt_key_west> hi tom
[13:21:42] <zeeshan> how much backlash exsts in timing pulleys like XL?
[13:21:47] <zeeshan> *exists
[13:21:57] <IchGuckLive> zeeshan: what lenth
[13:22:07] <zeeshan> 15 teeth and 32 teeth
[13:22:10] <zeeshan> w/ a 118 tooth belt
[13:22:10] <archivist> how worn is the pulley and belt
[13:22:14] <jt_key_west> hurricanes are for the fall
[13:22:14] <zeeshan> brand new
[13:22:24] <IchGuckLive> if you can go rack and pinion
[13:22:28] <Tom_itx> JT, ~100 or so expected here
[13:22:42] <Tom_itx> then storms for a few days
[13:22:46] <zeeshan> its on a ball screw.
[13:23:02] <archivist> zeeshan, note the specs are blank on that error when I liiked
[13:23:09] <archivist> looked
[13:23:11] <jt_key_west> It never gets above 90 something here
[13:23:21] <zeeshan> archivist: im looking at images of 'clearances'
[13:23:23] <kfoltman> pcw_home: yeah yeah I know
[13:23:33] <zeeshan> and all these timing belts have abit of clearance
[13:23:37] <zeeshan> so there should be some backlash..
[13:23:41] <IchGuckLive> zeeshan: on ballscrew so why not 20/25
[13:23:47] <jt_key_west> Any storms due in the Midwest sunday?
[13:23:48] <Tom_itx> aren't you supposed to go south when it's February and blizzard weather at home?
[13:24:13] <kfoltman> pcw_home: but I'm just setting things up without much experience/skills, so I do most things by trial and error
[13:24:18] <IchGuckLive> zeeshan: and as small timingbelt as you can in achs ofsets
[13:24:24] <Tom_itx> jt_key_west, not sure about sunday... but we're supposed to get a few days worth here
[13:24:45] <IchGuckLive> zeeshan: http://foengarage.de/gears2.html
[13:25:16] <zeeshan> IchGuckLive: i dont understand what youre talking about
[13:25:22] <zeeshan> im talking about backlash in timing pulleys
[13:25:27] <zeeshan> not what size i need
[13:25:40] <archivist> he never understands the question :(
[13:25:49] <IchGuckLive> no backlash on 180deg in system action
[13:26:04] <zeeshan> what if its 180.5 degrees
[13:26:08] <zeeshan> :P
[13:26:29] <jt_key_west> Well gotta go take a nap.
[13:26:33] <IchGuckLive> below 80deg you got only 3 teeth in action and that will give you a backlash
[13:26:52] <zeeshan> man i shoulda just made a direct drive mount
[13:26:56] <zeeshan> for this stupid x axis
[13:27:00] <zeeshan> stupid pulleys
[13:27:12] <IchGuckLive> pulleys are great
[13:27:12] <zeeshan> just another thing to add back lash
[13:27:18] <jdh> pulleys are great
[13:27:28] <archivist> direct drive also has resolution and accuracy problems
[13:27:33] <IchGuckLive> i use them all the time
[13:27:44] <zeeshan> archivist: i have 5mm pitch lead screws
[13:27:50] <IchGuckLive> better and smoother run and gearing force added
[13:27:50] <zeeshan> and 1/4 stepping
[13:27:56] <jdh> so you ahve crappy res
[13:28:07] <zeeshan> how is that crappy resolution?
[13:28:11] <IchGuckLive> XL is at 5,08mm
[13:28:27] <archivist> what is the gear ratio
[13:28:34] <IchGuckLive> in europ i prefer metric T stuff
[13:28:37] <zeeshan> my Z axis is direct drive
[13:28:55] <zeeshan> the X axis i was planning to run only pulleys because of the placement of the stepper
[13:29:02] <zeeshan> if i mounted it direct, it'd always hit me
[13:29:05] <zeeshan> when i'd work on the machine :P
[13:29:31] <archivist> use some reduction to get a better resolution
[13:29:37] <IchGuckLive> ballsrew 2005 2505
[13:30:19] <archivist> I dont care about backlash with unidirectional G code
[13:30:34] <zeeshan> 5 mm pitch = 0.19685"... .19684/200 steps = 0.000984 " resolution
[13:30:38] <zeeshan> and its 1/4 step
[13:30:51] <zeeshan> so 0.000984 / 4 = 0.0002" resolution
[13:30:54] <zeeshan> thats plenty for direct drive
[13:31:17] <IchGuckLive> so 20/25 timingbelt gives you a exact 400 stepp half steping best precission on max speed
[13:31:19] <zeeshan> so pulleys or direct drive
[13:31:20] <zeeshan> doesnt matter
[13:31:41] <renesis> fuck pulleys
[13:31:45] <Connor> zeeshan: 1/4 step doesn't always guarantee .0002" though.. the stepping can be a little off depending on where it's at on the motor..
[13:31:53] <renesis> ha
[13:32:02] <zeeshan> connor
[13:32:07] <zeeshan> the point is it's less than 1 thou
[13:32:09] <renesis> theres jitter but its not like its going to be way the fuck off
[13:32:14] <jdh> radius
[13:32:18] <IchGuckLive> im off BYE
[13:32:19] <Connor> with that being said, I think I do 1/8 stepping and all mine are direct drive.
[13:32:20] <zeeshan> this is Z axis
[13:32:26] <renesis> i dont really consider my microsteps as resolution
[13:32:31] <renesis> just makes the machine run smoother
[13:32:46] <zeeshan> renesis: well if its 0.0009 without microstepping
[13:32:55] <zeeshan> you can expect it to be less than 0.0009 with microstepping
[13:32:58] <zeeshan> which is all i want
[13:32:59] <renesis> are you running geckos?
[13:33:01] <zeeshan> no
[13:33:08] <zeeshan> kl8070d automtiontechnologies drives
[13:33:20] <archivist> longshine then :)
[13:33:22] <renesis> right so the machine has to push all the steps
[13:33:33] <renesis> i think geckos like, microstep to the next full step?
[13:33:33] <jdh> it's a 34 motor?
[13:33:35] <zeeshan> i mean from the video i did yesterday night
[13:33:38] <pcw_home> long may they shine
[13:33:39] <zeeshan> when i commanded 1 thou
[13:33:40] <zeeshan> it moved 1 thou
[13:33:42] <renesis> er
[13:33:44] <zeeshan> all the way to 5 thou
[13:33:48] <zeeshan> yea jdh
[13:33:48] <renesis> the controller has to push all the steps
[13:34:20] <renesis> my xyolotex is the same, i have 200 steps motors on 20 pitch, i dont consider my resolution better than .00025
[13:34:59] <renesis> even when im technically stepping at .000063 quarter stepping
[13:35:10] <zeeshan> why not?
[13:35:18] <zeeshan> i mean if youre microstepping that much
[13:35:26] <renesis> it just keeps the steppers from sounding like theyre going to asplode from excitement during curves
[13:35:28] <zeeshan> theres no way its going to jitter by 0.0025"
[13:35:36] <zeeshan> er
[13:35:37] <zeeshan> 0.00025
[13:35:39] <renesis> right but its going to jitter
[13:35:43] <zeeshan> yes
[13:35:49] <jdh> I do 20k microstepping on parkers
[13:35:49] <zeeshan> but not to 0.00025
[13:35:51] <renesis> and theres so much other slack in the machine
[13:35:51] <zeeshan> maybe less than that
[13:36:06] <renesis> i dont really think of anything below .00025 existing on my machine
[13:36:18] <archivist> zeeshan, you should have a read of http://www.micromo.com/microstepping-myths-and-realities.aspx
[13:36:24] <renesis> jdh: steppers or brushless?
[13:36:36] <jdh> parker steppers
[13:36:41] <renesis> like, if it didnt *sound* better, i wouldnt microstep
[13:36:49] <renesis> because of the load on the controller
[13:37:02] <renesis> id rather rapid faster
[13:37:07] <jdh> that's the default setting for the drives
[13:37:12] <renesis> tho geckos i dont think would have the same issue
[13:37:15] <zeeshan> archivist: let me clarify this 100%.
[13:37:26] <renesis> jdh: so its basically analog
[13:37:42] <pcw_home> step motors have spring just line every other motion component (1/200th rev to max torque)
[13:37:48] <jdh> I guess. basically pricey and works well
[13:37:50] <pcw_home> just like
[13:38:01] <renesis> yeah i bet
[13:38:02] <zeeshan> if a non-stepped system gives a resolution of 0.001", by microstepping at for example 1/4 microstep, i could expect better than 0.001" resolution
[13:38:06] <zeeshan> what that resolution is, is unknown
[13:38:13] <zeeshan> but i can confidentally say it's better than 0.001"
[13:38:19] <zeeshan> truth or am i completely wrong?
[13:38:20] <zeeshan> :P
[13:38:25] <pcw_home> Depending on load
[13:38:28] <archivist> zeeshan, I actually checked mine :)
[13:38:31] <renesis> anything off the .001 steps is going to be more prone to jitter
[13:38:41] <renesis> it depends a lot on the circuits
[13:39:15] <renesis> like, is it current feedback or just dumb pwm, is it high slew rate or does it bog down at high step rates, etc etc
[13:39:20] <zeeshan> pcw_home: assuming that the motor isn't losing steps
[13:39:28] <zeeshan> due to overdemanding it
[13:39:43] <pcw_home> If you lose steps all is lost...
[13:39:44] <renesis> i think microstepping youre less likely to lose steps
[13:39:45] <archivist> missing steps is a complete failure, should never happen
[13:40:02] <renesis> thats why i use it, its smoothly hands off the coils
[13:40:13] <renesis> you hear the improvement
[13:40:26] <pcw_home> yes microstepping results in less resonance/noise
[13:40:31] <renesis> but in between steps, i dont consider it a rigid hold
[13:40:35] <renesis> its basically floating
[13:40:50] <archivist> but on 8th steps here I can hear the magnetic error
[13:40:58] <pcw_home> no, its a spring
[13:41:03] <renesis> right i dont 8th step on my xylotex anymore
[13:41:11] <zeeshan> honestly, just with direct drive on my Z axis i have 0.0009 theoretical resolution, without any microstepping
[13:41:23] <zeeshan> but .0009 in the X direction would be unacceptable
[13:41:33] <zeeshan> cause its out by 0.002 in the diameter.
[13:41:45] <zeeshan> so i guess a 2:1 pulley is necessary
[13:41:48] <renesis> you have 200 step motors already?
[13:41:56] <zeeshan> renesis: dieeee
[13:41:57] <renesis> fuck a pulley, its a CNC
[13:41:58] <zeeshan> watch my video
[13:42:05] <pcw_home> I would use the highest ustep ratio you can generate steps for
[13:42:15] <renesis> im listening to music, live #dnbradio set, would be rude
[13:42:23] <zeeshan> watch it!
[13:42:38] <renesis> link
[13:42:39] <zeeshan> https://www.youtube.com/watch?v=9lwpug20LTQ
[13:42:42] <pcw_home> (well above about 32 its diminishing returns)
[13:42:52] <zeeshan> pcw_home: i thought you lost torque
[13:42:55] <zeeshan> as you increased microstepping
[13:42:58] <pcw_home> nope
[13:43:31] <renesis> zeeshan: backlash?
[13:43:55] <zeeshan> renesis: i didnt measure it on the machine yet
[13:44:04] <zeeshan> cause i dont have the ball screw mounted 100%
[13:44:07] <zeeshan> the nut isn't on it
[13:44:16] <renesis> i was listening to you click and watching the dial
[13:44:21] <renesis> it didnt move two of the clicks
[13:44:24] <Jymmm> In case any of you wanted to link directly to google images, this is the format: http://www.google.com/images?q=acrylic+table+tent
[13:44:28] <zeeshan> renesis: die
[13:44:33] <zeeshan> trust me
[13:44:33] <zeeshan> it moved
[13:44:35] <zeeshan> !
[13:44:44] <zeeshan> i prolly shoulda showed a video of the screen
[13:44:45] <zeeshan> showing 0.005"
[13:44:50] * Jymmm never trusts anyone that says "Trust me".
[13:44:54] <zeeshan> Jymmm: haha
[13:45:24] <archivist> measuring over 5 thou is a little too short
[13:45:49] <zeeshan> archivist: you're going to make me fully assemble the ball screw arent you? :P
[13:45:58] <archivist> hoooomeeee http://www.archivist.info/cnc/screw_error/
[13:46:21] <Jymmm> zeeshan: you need the practice. Be sure to use a big fluffy towel!
[13:46:22] <renesis> zeeshan: right it moved .005 but it sounded like you clicked 7 times
[13:46:28] <renesis> and it lost two to backlash
[13:46:36] <zeeshan> how is there backlash
[13:46:38] <zeeshan> i moved in the same direction
[13:46:46] <zeeshan> ??
[13:46:59] <archivist> we dont know how you got to 0
[13:47:00] <renesis> because something was stuck the first step
[13:47:12] <zeeshan> screw you guys
[13:47:12] <renesis> then broke free and shifted to the other side of a nut
[13:47:17] <renesis> then finished backlashing
[13:47:20] <zeeshan> im gonna hook up the 6" indicator
[13:47:24] <renesis> ha
[13:47:29] <zeeshan> and make a 1hour video
[13:47:32] <zeeshan> BRB
[13:47:40] <zeeshan> =D
[13:47:51] <Jymmm> zeeshan: GIT ER DONE!
[13:48:10] <renesis> i think you should switch to standard screws instead of balls
[13:48:12] <renesis> =O
[13:48:21] <zeeshan> fak that ghetto shit
[13:48:21] <zeeshan> :P
[13:48:39] <zeeshan> i have to mill some flats on the ball screw ends
[13:48:43] <Jymmm> renesis: He alread y has a few screws loose as it is, no need to encourage him.
[13:49:02] <renesis> my shits worked for years, and i get 4000 steps per inch
[13:49:16] <renesis> full step
[13:49:23] <zeeshan> youre already not dealing with 100lb of feed force
[13:49:40] <zeeshan> or more
[13:50:03] <renesis> yeah true, but you can prob find something finer that can deal with it =)
[13:50:12] <zeeshan> not for 200 bux you're not.
[13:50:16] <zeeshan> these were dirt cheap
[13:50:26] <zeeshan> 5mm pitch is pretty standard on em
[13:51:19] <zeeshan> renesis: for the mill
[13:51:24] <zeeshan> i think im gonna just run acme screws
[13:51:32] <zeeshan> and just do anti-backlash nuts on it
[13:51:37] <zeeshan> save some money and headache :p
[13:52:33] <renesis> zeeshan: lab at new school has three haas mills and a haas lathe
[13:52:59] <zeeshan> nice
[13:53:04] <renesis> and it seems the lathe is mostly not dead yet
[13:54:05] <renesis> also they have a fuck ton of large envelope injection mold and vacuum form machines
[13:54:23] <renesis> they were making walnut shell composite shooting clays when i visited, heh
[14:32:03] <tjtr33> theres is no version id on the BBB pcb. the chip that make it RevC have a number in the BOM that is not on the chip itself,
[14:32:04] <tjtr33> BUT the revision number in on the freakin cardboard box! dang that wasted 3hrs!
[14:49:31] <skroon> hi all
[14:49:53] <skroon> anybody know what kind of machine this is ? http://www.formit.nl/img/content/IMG_4060.jpg table saw or something?
[14:51:03] <archivist> is it grinding or moving the plastic
[14:51:58] <skroon> grinding i think
[14:52:04] <skroon> they idea is to make a v-grove
[14:52:16] <skroon> but i've never seen these types of "wheels" on table saws, so i'm not sure what type of machine it is
[14:52:36] <archivist> looks special for the job
[14:54:20] <skroon> i've seen them more, where they have CNC thermo bending machines (for plastics)
[14:54:33] <skroon> they use this v-groove where the bend needs to be
[14:54:42] <witnit> looks like someone decided to use this wheel to drive the part at a constant feed rate, on something very similar to a router
[14:55:41] <archivist> skroon, I have seen a plastic box maker use that sort of groove for the bends
[14:56:00] <skroon> archivist: right, plastic box makers :-) that's also what i'm trying todo
[14:56:12] <skroon> witnit: ah right, might well be indeed
[14:57:16] <skroon> archivist: i'm using my cnc to make the 2d pattern, and then would like to thermo bend
[14:57:39] <witnit> I think if you needed to make one, a dc speed controller and gearbox would be simple enough to duplicate the machine
[14:58:02] <archivist> hot air gun
[14:58:58] <skroon> witnit: good idea indeed
[15:00:22] <witnit> I wonder if you could do plastic bending by heating your plastic with a fast panning laser beam
[15:00:29] <witnit> accurate heating area or something
[15:01:54] <archivist> skroon, http://www.boss-enclosures.co.uk/customdesign/Steps_and_Principles they did it, they also use rectangular grooves for fitting parts together
[15:04:21] <skroon> archivist: awesome!
[15:04:26] <archivist> when I explore in the loft I will get pictures
[15:06:41] <archivist> http://www.boss-enclosures.co.uk/customdesign/Technology
[15:07:21] <tjtr33> skroon, http://www.hpi.uni-potsdam.de/baudisch/projects/laserorigami.html
[15:08:21] <skroon> tjtr33: great name :-)
[15:09:23] <tjtr33> laser & droop, not really controlled deformation
[17:04:05] <demimsy> hey guys, i am getting some really scary behavior out of my machine
[17:04:57] <demimsy> when running a subroutine, for no reason(ie no errors thrown) it stops running my subroutine
[17:05:31] <demimsy> it always jumps out at the same spot, but it is random the times it does jump out
[17:06:02] <demimsy> it jumps out on the second line of my code. the first two lines are:
[17:06:15] <demimsy> G53 G00 X[0]
[17:06:25] <demimsy> G00 Z[8]
[17:18:56] <Deejay> gn8
[17:58:39] <CaptHindsight> I need my 7-10" ARM tablet sized Linuxcnc system
[18:09:11] <CaptHindsight> has anyone seen an all-in-one touchscreen PC with LPT or PCI/PCIe slot? not industrial
[18:20:40] <SpeedEvil> does expresscard count?
[18:23:03] <CaptHindsight> sure, I'd like to control a stepper or two from a small PC
[18:23:46] <CaptHindsight> even a lower cost laptop should work
[18:24:30] <CaptHindsight> http://www.newegg.com/Product/Product.aspx?Item=N82E16856107095 has a PCI slot vs miniPCI
[18:29:10] <andypugh> CaptHindsight: Try EPOS terminals
[18:31:22] <CaptHindsight> http://www.jetwaycomputer.com/spec/JAD4COMB.pdf jetway makes mini-itx boards that have these small expansion modules
[18:31:47] <CaptHindsight> 24bit programmable digital GIO.
[18:32:41] <CaptHindsight> but of course no specs
[18:37:30] <CaptHindsight> skunkworks_: which laptop were you using that was fast enough for linuxcnc? and did it have an expresscard slot?
[18:50:29] <Jymmm> skunkworks_: ping
[18:51:25] <Jymmm> skunkworks_: What word or phrase am I looking for here:
[18:52:04] <CaptHindsight> http://www.newegg.com/Product/Product.aspx?Item=N82E16834258639 laptop with expresscard slot but no idea what the latency is
[18:52:34] <Jymmm> skunkworks_: Be it laser, plasma, edm, etc... when you have to adjust the power going to the tooling to adjust for motion velocity and/or accelraeration to maintain consistancy?
[18:53:38] <Jymmm> skunkworks_: not trajecotry, not cartisan (sp), but _____________________
[19:09:27] <XXCoder1> heys
[19:45:49] <Aero-Tec> looking for downloadable Gcode files for linux cnc
[19:46:13] <Aero-Tec> need some lathe and mill startup files
[19:47:19] <Tecan> Aero luckily gcode is easy to write
[19:48:31] <Aero-Tec> I hand code all the time
[19:48:38] <andypugh> Aero-Tec: Try opening a jpeg on your mill :-)
[19:48:46] <Aero-Tec> I like it better then CAM code
[19:48:58] <Aero-Tec> ?
[19:49:04] <andypugh> You might be surprised at the result
[19:49:21] <Aero-Tec> for real?
[19:49:28] <andypugh> (depending on the filters set up on your system)
[19:49:32] <Aero-Tec> do I need to rename it?
[19:50:02] <Aero-Tec> is there a vid of someone doing that?
[19:50:10] <andypugh> It will certainly work with the sim configs.
[19:50:24] <andypugh> They are set up to use the image-2-gcode filter
[19:50:58] <andypugh> Which converts an image to a depth map
[19:51:08] <Aero-Tec> cool
[19:51:45] <Aero-Tec> just looking for sample Gcode and starting gcode for linux cnc
[19:51:47] <andypugh> You should also find some sample files in your nc_files folder, such as 3D chips (carve a penguin)
[19:52:58] <tjtr33> Jymmm, the control type used by linuxcnc is position or velocity. the control type used for edm, polishing, crush grinding is 'gap control'
[19:52:59] <tjtr33> (position or velocity depends on process loop set point vs actual sensed value, not time.lastposn and last vel)
[19:53:10] <zeeshan> http://www.ebay.com/itm/COMPLETE-HUOT-DRILL-BLANK-INDEX-A-Z-/111360427985?pt=LH_DefaultDomain_0&hash=item19ed9947d1
[19:53:15] <zeeshan> imagine opening a dill index
[19:53:19] <zeeshan> and then being like 'wtf'
[19:53:24] <zeeshan> this would make a good present to troll someone
[19:56:52] <XXCoder1> drill blanks
[19:56:53] <XXCoder1> lol
[19:56:55] <zeeshan> haha
[19:57:17] <PetefromTn_> Damn man I am still shakin' here..
[19:57:45] <zeeshan> why
[19:57:45] <PetefromTn_> Just took a ride after dinner to take my wife and kids to get some Ice cream.
[19:58:33] <PetefromTn_> on the way back we were driving along talking and some jackass in a black sedan musta been texting or something came across the line and into our lane
[19:58:34] <Aero-Tec> all I am looking for is the INI starting gcode
[19:58:56] <PetefromTn_> The windows were tinted real dark so I could not see the driver
[19:59:14] <Aero-Tec> good thing your OK
[19:59:21] <PetefromTn_> I slammed on the brakes and tried to steer away.
[19:59:22] <Aero-Tec> could have been bad
[19:59:32] <PetefromTn_> He missed us by LITERALLY inches.
[19:59:36] <Aero-Tec> he hit you?
[19:59:39] <Aero-Tec> ok
[20:00:12] <Aero-Tec> get his license number?
[20:00:23] <PetefromTn_> my wife wanted me to chase them down and kick their asses
[20:00:25] <Aero-Tec> could report him
[20:00:43] <Aero-Tec> I would chase his but get number and report him
[20:00:48] <Aero-Tec> not kick ass
[20:00:49] <PetefromTn_> that was so damn close it is not even funny
[20:01:01] <Aero-Tec> that can get you into deep dodo
[20:01:33] <PetefromTn_> I was bracing for impact man..
[20:01:35] <XXCoder1> ow
[20:01:55] <PetefromTn_> and when he missed us I was so amped I could not even think to get a license plate number or anything.
[20:02:19] <XXCoder1> year ago I lost my super realible car to hit and run :( fuck bad drivers
[20:02:28] <XXCoder1> now i got a nice white tickimg bomb
[20:02:32] <XXCoder1> er car I mean
[20:03:02] <Aero-Tec> same thing happened to my dad, all of us were in the car and this mad man came around the corner on our side of the road, not sure how he did not hit us. my dad chased him down and asked whats his problem
[20:03:10] <PetefromTn_> I am amazed he did not hit us....
[20:03:53] <PetefromTn_> My wife is so pissed off I sure hope we do not see that car anywhere soon.
[20:04:06] <Aero-Tec> he said the speed for corner said 70 so he was going 70. we had just converted to metric and his truck was in MPH not KPH
[20:05:08] <XXCoder1> jeez
[20:05:22] <Aero-Tec> he was French Canadian, and we live out west so we do not see many of them out here
[20:05:47] <XXCoder1> heh my old car used to refuse to switch away from metric so I have to figure kph - mph conversion while driving. luckly most common was 100 kmp = 60 mph approx
[20:05:52] <XXCoder1> kph
[20:06:05] <Aero-Tec> yep
[20:06:15] <Aero-Tec> but what a dumb ass
[20:09:17] <Aero-Tec> he just went through our town, but he was not going 50 MPH
[20:09:47] <Aero-Tec> when the sign said 50 IN TOWN you would think he would figure it out
[20:10:12] <Aero-Tec> I never did buy his BS
[20:10:27] <Aero-Tec> I am sure he was just trying to cover his ass
[20:11:04] <Aero-Tec> my dad seemed to buy it, but he could have been looking for a way to just get away from the conflict
[20:11:59] <Aero-Tec> I was wanting to take it further but I was just a kid at the time, about 15 or so
[20:12:47] <Aero-Tec> thought he should be reported for reckless driving and endangerment of others
[20:13:10] <Aero-Tec> not that the cops would do sweet bugger all
[20:13:48] <Aero-Tec> but if he gets reported enough he may get his license taken away
[20:14:53] <Aero-Tec> anyways
[20:14:59] <Aero-Tec> back to gcode
[20:15:05] <FrankZappa> gee
[20:15:10] <FrankZappa> code
[20:15:16] <Aero-Tec> there is a place where one can upload gcode
[20:15:39] <Aero-Tec> probably more then one
[20:15:56] <PetefromTn_> to show it to others?
[20:16:08] <PetefromTn_> pastebin?
[20:17:31] <FrankZappa> http://replicat.org/generators
[20:23:58] <andypugh> kph to mph is easy, it’s just 4 binary shifts and a decimal one the other way :-)
[20:25:16] <andypugh> So, 23mph? That’s 23->46->92->184->368->36.8kph :-)
[20:25:49] <andypugh> 64kph? 64-32-16-8-4-40mph
[20:25:53] <zeeshan> any students in here
[20:25:58] <zeeshan> Once a degree has been conferred, a student cannot be charged with academic dishonesty that is alleged to have occurred while they were working towards that degree.
[20:26:00] <zeeshan> true or false? :[
[20:26:05] <zeeshan> im thinking false
[20:26:21] <andypugh> I suspect it depends on where you are
[20:26:22] <XXCoder1> andypugh: interesting
[20:27:21] <zeeshan> andypugh: youre right
[20:27:24] <zeeshan> its in the policy paper.
[20:27:32] <zeeshan> his P olicy applies to all registered students, to students who have withdrawn or graduated if it is alleged that they committed academic dishonesty during the time they were registered stud ents
[20:28:20] <andypugh> I am pretty sure that in the UK they can withdraw your degree if it turns out you didn’t earn it. Like they can withdraw the right to practice of a doctor.
[20:28:30] <zeeshan> thats cool
[20:28:35] <zeeshan> keeps trust within the system.
[20:29:02] <zeeshan> cheaters should be eliminated!
[20:29:35] <andypugh> People stupid enough to get caught cheating should be ;-)
[20:29:59] <zeeshan> lol
[20:30:23] <andypugh> (No, I don’t condone cheating, and I earned my degrees fair and square)
[20:30:43] <XXCoder1> I earned both mine fair and sqare too, and I hate cheaters
[20:33:26] <zeeshan> same here
[20:33:45] <zeeshan> a guy i knew got caught surfing for answers on his phone in the middle of a final exam
[20:33:46] <andypugh> But then, we would say that, wouldn’t we?
[20:33:47] <zeeshan> he got caught lol
[20:35:02] <andypugh> When I toook my exams the wire across the floor to the phone would have been a giveaway :-)
[20:35:14] <XXCoder1> zeeshan: did you see this pic of some guy with fake arm and real one under table using phone to look for answers?
[20:35:41] <zeeshan> no
[20:35:42] <zeeshan> hahah
[20:36:08] <zeeshan> link?
[20:36:19] <XXCoder1> sec
[20:36:21] <XXCoder1> if can find
[20:36:47] <XXCoder1> http://everydayfunnyfunny.com/wp-content/uploads/2012/10/how-to-cheat-on-a-test-fake-arms.jpg
[20:36:59] <XXCoder1> I was wrong
[20:37:02] <XXCoder1> TWO fake arms
[20:37:17] <zeeshan> ROFL
[20:39:17] <andypugh> How can you be sure that they are fake?
[20:40:08] <XXCoder1> no hands lol
[20:40:53] <XXCoder1> I recal reading about one person using random pattern cup and using colored glasses to see one color - one with answers and notes
[20:43:13] <jp_mill> ok need some guidance on steppers. for some reason I can not get my motors to rotate faster than 58ipm regardless of step scale and micro stepping combination
[20:44:12] <jp_mill> also regardless if the motors are connected to the machine/screw or not
[20:45:09] <andypugh> How many steps per second is that?
[20:46:20] <andypugh> 200 x microstepping x 60 x pitch
[20:46:55] <jp_mill> 96000
[20:47:17] <jp_mill> oh add another zero 960000
[20:48:03] <andypugh> So, 1000nS per step.
[20:48:18] <andypugh> I suspect that this is not a parallel port setup?
[20:48:29] <jp_mill> no 5i25 and 7i76
[20:49:47] <andypugh> I don’t know what the 5i25 maxes out at (I think it may be 10Mhz) but you are quite possibly on the limit of step-time + space-time
[20:50:19] <andypugh> What have you set those at? And what can the drive handle
[20:50:27] <jp_mill> yeah i tried playing with them
[20:50:36] <jp_mill> they were both at 5050
[20:50:45] <andypugh> There you are
[20:50:53] <jp_mill> at 1000 now but no difference
[20:50:56] <pcw_home> thats 100 KHZ or so max
[20:51:09] <pcw_home> 1000 is 500 KHz max
[20:51:50] <andypugh> You may need fewer microsteps
[20:51:54] <pcw_home> 5i25 limit is 8.33 MHz
[20:52:35] <jp_mill> i cant go any lower on the micro steps 400 is the lowest setting
[20:52:58] <pcw_home> 400 ustep or 400 step/rev?
[20:53:13] <andypugh> I don’t think many stepper drives can go above a few Mhz
[20:53:33] <jp_mill> 400steps/rev
[20:53:46] <andypugh> Ok, that’s 2x microstepping
[20:53:49] <pcw_home> so thats 1/2 steps
[20:55:00] <andypugh> My new harmonic drive arrived today, it’s lovely. Now I need to remember what I wanted it for :-)
[20:55:35] <zeeshan> pcw_home: i don't mean to beat on a dead horse, but could you give me a link to an article that explains how increasing the microstep count won't decrease torque
[20:56:01] <zeeshan> http://www.micromo.com/microstepping-myths-and-realities.aspx
[20:56:03] <zeeshan> this site right?
[20:57:02] <pcw_home> yes thats ok but people mistake _incremental_ torque with stall torque
[20:57:44] <zeeshan> 'incremental torque vs stall torque' <- google comes up with nothing
[20:57:47] <zeeshan> whats the difference?
[20:57:52] <zeeshan> i know what stall torque is
[20:57:56] <zeeshan> but whats incremental torque
[20:58:34] <pcw_home> how much torque is needed to force the shaft 1 ustep out of position
[20:59:21] <zeeshan> so that means you're decreasing incremental torque as you increase the microstepping amount, meaning you'll actually have less feed force available?
[20:59:31] <zeeshan> (in the case of a lathe)
[21:00:21] <pcw_home> no, its the same
[21:02:00] <pcw_home> (well above 1/4 stepping or so, 1/2 stepping is funny)
[21:02:55] <zeeshan> 1.8 degree = 1 step. assuming 1ft-lb available at full step. at 1/4 step you break that 1 step into 4 steps. so you'd only have roughly 0.25 ft-lb of torque per 1/4 step?
[21:02:58] <zeeshan> is that whats going on
[21:03:29] <zeeshan> i know that conversion isn't correct in the above statement
[21:03:32] <zeeshan> but is that the idea?
[21:03:52] <zeeshan> when you add up the total amount of torque available for those 4 microsteps, it adds up to 1ft-lb
[21:03:54] <zeeshan> i dunno :P
[21:03:58] <jdh> real machines have servos
[21:04:06] <zeeshan> jdh hush, im trying to understand something
[21:04:47] <pcw_home> so if i do full stepping (200 steps/turn) the force needed to displace the rotor a full step is ~the stall torque
[21:04:49] <pcw_home> if i do 256 ustepping the force needed to displace the shaft a full step (1/200 of a turn is the same)
[21:05:02] <andypugh> I am not certain that “detente torque” is relevant for an energised motor? And I distrust any site that can’t spell “wreaks havoc”
[21:05:50] <zeeshan> so microstepping is a win-win situation
[21:05:56] <pcw_home> but the amount of torque needed to displace the rotor 1/256th or 1/200 of a turn is much smaller
[21:06:00] <zeeshan> shouldn't rely on it for increased resolution,
[21:06:08] <zeeshan> but for the fact that it makes the stepper drive smoothly
[21:06:09] <pcw_home> s/or/of/
[21:06:11] <zeeshan> and decreases resonance
[21:06:19] <andypugh> And you run out of step-rate far sooner
[21:06:24] <pcw_home> yes that mainly what you get
[21:06:46] <pcw_home> you do get higher resolution with good drives/motors at light loads
[21:07:43] <andypugh> Steppers + Resolver feedback and a servo drive is what we need :-)
[21:07:47] <pcw_home> ~16 or 32 ustep is about as high a resolution increase you can get
[21:08:13] <jp_mill> andypugh: if i increase the micro stepping to 1/4 or 1/8 stepping i get the same behaviour. Motor stalls out at 58ipm. If it was a timing issue I would think that with the increased micro stepping it would stall out at a lower feed rate. or am i wrong in some manner.
[21:08:15] <pcw_home> the Leadshine hybrid step drives are quite nice (encoder feedback)
[21:08:34] <XXCoder1> someone and me once found motor with step angle 0.8 degree
[21:08:37] <XXCoder1> it was nuts
[21:08:56] <pcw_home> maybe thats as fast as you step motor/drive will run
[21:09:14] <zeeshan> max speed i thought was limited by your pulses from the computer
[21:09:23] <zeeshan> and your drive's ability to intrepret em
[21:09:29] <andypugh> jp_mill: what stepper RPM is this? it might just be the voltage/inductance thing. But that doesn’t really fit with the load not being important
[21:09:31] <zeeshan> not related to microstepping
[21:09:47] <zeeshan> nm.
[21:09:52] <zeeshan> <-noob
[21:09:54] <pcw_home> and torque loss at high speeds
[21:10:31] <zeeshan> so since my linuxcnc stuff can generate a pulse train that works for upto 150ipm
[21:10:33] <zeeshan> @ 1/4 step
[21:10:39] <zeeshan> and i only want 100ipm,
[21:10:43] <zeeshan> i should prolly increase the step size
[21:10:47] <zeeshan> er
[21:10:51] <zeeshan> increase microstepping
[21:11:06] <pcw_home> check if its smoother
[21:11:12] <jp_mill> keep in mind this is running on the bench. I thought it was a torque mechanical issue until i disconnected the motors and saw that they were stalling out unloaded
[21:11:15] <zeeshan> it is definitely a lot smoother
[21:11:22] <zeeshan> at 1/8 microstep
[21:11:23] <pcw_home> (and you can still get your desired IPM)
[21:11:50] <zeeshan> the main reason i didnt increase microstepping too much is cause i thought i would not be able to get lots of feed force
[21:11:53] <andypugh> jp_mill: Could be resonance. Have you tried clamping the motor to the table?
[21:12:10] <jp_mill> Yeah
[21:12:33] <andypugh> What supply voltage?
[21:12:36] <pcw_home> nah you dont lose torque (but you dont get all the resolution you might think)
[21:12:41] <zeeshan> thats fine
[21:12:51] <zeeshan> im relying on the ball screw to dictate resolution
[21:12:53] <zeeshan> and the pulleys
[21:13:05] <zeeshan> i trust mechanical stuff!
[21:13:18] <zeeshan> thank you for clarifying this to me.
[21:13:33] <jp_mill> 48V and 60 V tested with two different drive from same leadshine knockoff mfg
[21:13:45] <pcw_home> if you want higher res, gear down more (or use servos)
[21:14:00] <zeeshan> i have 0.0009 resolution in the Z axis
[21:14:05] <andypugh> Hmm, you are shooting down my theories quicker than I can think of them
[21:14:08] <zeeshan> and will have 0.0003 resolution in the X axis
[21:14:11] <zeeshan> thats plenty ithink for a lathe
[21:14:26] <zeeshan> just solely based on mechanics
[21:14:50] <zeeshan> jp_mill: i don't know if you have this problem
[21:14:51] <andypugh> Am I the only one to think that servos + resolvers are the best of all?
[21:15:03] <zeeshan> but if you set your jitter microseconds is set too high
[21:15:08] <zeeshan> itll seriously slow down your steppers
[21:15:15] <jp_mill> Yeah this one is bugging me was chasing mechanical issues for the last two months just to find out i should of checked the motors to start with
[21:15:18] <pcw_home> servos and Resolute encoders...
[21:15:34] <andypugh> Hmm, maybe.
[21:15:35] <jp_mill> @nd that
[21:15:50] <pcw_home> (and 50 KHz or so MOSFET drives)
[21:15:52] <zeeshan> you guys are designing systems for cnc grinders!!!
[21:15:54] <zeeshan> not mills!!
[21:15:54] <zeeshan> :P
[21:16:02] <andypugh> Renishaw sent me a Resolute to play with, it got lost in the post :-(
[21:16:11] <pcw_home> Ouch
[21:16:30] <zeeshan> jp_mill: whats your jitter set to?
[21:16:36] <Tom_itx> andypugh is that the story you're sticking with?
[21:16:38] <Tom_itx> :D
[21:17:00] <jp_mill> it's low its a D510MO board
[21:17:34] <zeeshan> http://www.linuxcnc.org/docs/2.4/html/stepconf-basic.png
[21:17:36] <zeeshan> on that screen
[21:17:42] <zeeshan> 'base period maximum jitter'
[21:17:50] <zeeshan> is yours like 5000 to 10000?
[21:18:03] <zeeshan> i remember when i had that set to 15000, and went to 5000
[21:18:11] <zeeshan> i massively increased the ipm
[21:18:14] <andypugh> I can’t help thinking that DIY resolute could be doable with a webcam and a barcode printer.
[21:18:16] * zeeshan is a noob
[21:18:40] <zeeshan> the other thing that severely limited the ipm
[21:18:41] <pcw_home> Yes but not at 40 KHZ update rates
[21:19:19] <zeeshan> oh, he already had 40khz update rates
[21:19:19] <zeeshan> nm
[21:19:21] <skunkworks_> Jymmm: linuxcnc calls it 'adaptive feed'...
[21:19:39] <andypugh> No, that’s pretty insane. In fact we could use that to measure shaft vibrations. Hmm….
[21:19:46] <pcw_home> but for slow speeds (not a bad idea for a toolchanger absolute encoder)
[21:21:18] <andypugh> I don’t actually know what physical principle these use: http://www.polytec.com/fileadmin/user_uploads/Products/Vibrometers/RotVib/Documents/OM_BR_RLV-5500_2010_07_PDF_E.pdf
[21:23:08] <pcw_home> Those look fairly expensive
[21:23:17] <zeeshan> pcw_home: i wish i knew about what you taught me before :{
[21:23:25] <zeeshan> i could benefit from a mesa card now
[21:23:43] <jdh> buy some, they are cheap.
[21:23:49] <zeeshan> its not about $
[21:23:56] <zeeshan> its about how much of a pain in the ass it will be to convert to
[21:24:02] <zeeshan> ill definitely buy them from the mill
[21:24:07] <zeeshan> *for
[21:25:10] <pcw_home> If you are happy with 1/8 stepping and your max IPM, a parallel port is fine
[21:25:21] <zeeshan> ill be okay with it for the lathe
[21:25:25] <zeeshan> but that will be unacceptable for the mill
[21:25:43] <zeeshan> especially for the knee.
[21:25:48] <andypugh> pcw_home: Polytech stuff is expensive, but they can use lasers to measure displacement to a tenth of the wavelength at kHz sample rates. Which sounds like witchcraft to me.
[21:25:57] <pcw_home> (and max IPM is often mode limited by step motor torque loss at high speeds)
[21:26:36] <zeeshan> is there a nice article to follow online
[21:26:38] <pcw_home> Yeah i guess if you are making high speed spindles or jet engines you can afford them....
[21:26:39] <zeeshan> on what card to buy etc?
[21:27:48] <pcw_home> if you want something thats a near drop in replacement for a parallel port hardware wise, I would use suggest the 5I25
[21:28:44] <zeeshan> omg
[21:28:49] * skunkworks_ loves the 5i25...
[21:28:50] <zeeshan> i dont need to re-wire anything
[21:28:59] <zeeshan> all i gotta do is buy the 5i25, plug it into my pci port
[21:29:03] <zeeshan> and run the parallel port cable there
[21:29:04] <zeeshan> ?!
[21:29:14] <jdh> and have another port of IO
[21:29:14] <andypugh> But the 5i25 costs 5x the price of a parallel port and is only 100x faster!
[21:29:15] <zeeshan> and reconfigure the pins in hal
[21:29:47] <skunkworks_> depending on the pinout you need... if you ask pcw nicely - he will probably build you a custom firmware...
[21:31:10] <andypugh> I have an Amazon ECS instance with the Xilinx compiler and the source code all ready to be a firmware-on-demand bot, but then I got distracted by an old motorbike
[21:31:31] <zeeshan> not to belittle the 5i25
[21:31:39] <zeeshan> but its basically a parallel port on steriods
[21:31:42] <zeeshan> didnt know that
[21:32:20] <skunkworks_> very expandable...
[21:32:35] <andypugh> No, it’s something that can emulate a parallel port on steroids. But that’s just one of the hats it can wear.
[21:32:52] <zeeshan> 10 axis step/dir
[21:32:52] <zeeshan> lol
[21:33:52] <andypugh> Or 768 individual IO lines (potentially 1536 but the daughter cards don’t exist, AFAIK)
[21:35:45] <zeeshan> so since its hardware stepgen
[21:35:55] <zeeshan> does the computer jitter matter still?
[21:36:09] <andypugh> Yes, but less.
[21:36:21] <cradek> you don't need to run a base thread.
[21:36:42] <zeeshan> why didnt you guys tell me this before
[21:36:43] <zeeshan> ?
[21:36:47] <zeeshan> damn you all!
[21:37:07] <zeeshan> :)
[21:37:16] <pcw_home> depending on how you do the corrections the stepgen can tolerate 50 to 300 usec of jitter on the servo thread
[21:37:33] <jdh> I told you several times
[21:37:46] <zeeshan> i guess its one of those things you learn through experience
[21:38:09] <pcw_home> (and still have good performance, and MHZ step rates)
[21:38:32] <zeeshan> the main fact that construed me away from ever needing more pulse is the fact that i read mislead people's forum posts on how torque decreased.
[21:38:38] <zeeshan> so i never wanted to microstep to begin with
[21:39:37] <jdh> have you tried your C6 yet?
[21:39:58] <zeeshan> no
[21:40:00] <zeeshan> its collecting dust
[21:40:07] <zeeshan> remember im using modbus?
[21:40:16] <jdh> oh, cool.
[21:40:21] <zeeshan> want it?
[21:40:26] <jdh> saves you have having to return it for the C41
[21:40:28] <jdh> no.
[21:40:39] <zeeshan> if anyone wants it, they can gave it
[21:40:44] <andypugh> zeeshan: There is a second-order advantage in a faster pulse rate. Much smaller speed increments at higher speeds.
[21:40:45] <zeeshan> just give me 5 bux for shipping
[21:42:41] <andypugh> Given that the motor can probably only actually follow an intantaneous speed increase of 10% or so without stalling, a much faster base-rate can move that out of the way.
[21:42:42] * Tom_itx saddles up his mule to pay zeeshan his 5 bux
[21:42:51] <zeeshan> haha
[21:43:16] <andypugh> Right, I should have been asleep hours ago
[21:43:31] <zeeshan> he sleeps early
[21:43:48] <jdh> early in the morning
[21:43:54] <zeeshan> jdh less irc
[21:43:59] <zeeshan> more cnc
[21:44:03] <Tom_itx> isn't it like 3am there?
[21:44:04] <jdh> he's 5hrs ahead?
[21:44:15] <zeeshan> oh, i thought he was in the east coast
[21:44:19] <zeeshan> he's in uk..
[21:49:27] <jdh> keling is selling their cheap 40w co2 for $550 now
[21:51:40] <zeeshan> you planning to build a laser cutter?
[21:51:57] <jdh> I'd buy, not build.
[21:52:13] <jdh> but, for that, you would have to buy, buy better electronics and rebuild
[22:05:08] <PetefromTn_> Awesome..... Space Balls is on Netflix. Time to watch a classic... ;)
[22:06:24] <XXCoder> :)
[22:06:36] <XXCoder> LUCUOUS SPEED!
[22:08:20] <PetefromTn_> Ludicrous speed...!!
[22:08:28] <PetefromTn_> They've gone to plaid LOL
[22:08:37] <XXCoder> Suck... Suck.. SUCK!!
[22:08:51] <PetefromTn_> Love that movie.
[22:08:56] <XXCoder> yeah
[22:09:05] <XXCoder> I'm my own best friend"
[22:09:21] <PetefromTn_> May the SCHWARTZ be with ya..