#emc | Logs for 2010-09-30

[00:01:23] <morficmobile> JT-Hardinge: A36? that really crappy material? used for safe plates cause it's fun to drill
[00:04:04] <theorb> theorb is now known as theorbtwo
[00:49:49] <JT-Hardinge> uh, tubing
[00:55:05] <morficmobile> JT-Hardinge: A36 tubing? doesn't sound fun either, if it's anything like the A36 we used in my last job
[01:45:52] <JT-Hardinge> yea, A36 square tube 2 x 2 1/4
[01:45:59] <JT-Hardinge> dirty nasty stuff
[01:54:40] <Jymmm> A36?
[01:58:41] <morficmobile> I consider it trash metal
[02:27:32] <morficmobile> Jymmm: all i know is, you need patience when drilling it, and all we used at my last place was cobalt drills
[02:48:11] <L84Supper> http://www.theleeco.com/EFSWEB2.NSF/MDG!OpenView anyone know of other suppliers of these micro dispensing valves?
[02:49:05] <Dave911> I think JT is just talking about mild steel ... 36,000 psi yield strength... a lot of angle iron, tubing, channel steel is A36. It is very easy to weld, machine, etc... Very handy stuff.
[02:49:59] <Dave911> http://en.wikipedia.org/wiki/A36_steel
[03:04:26] <Jymmm> morficmobile: why?
[03:08:08] <morficmobile> Jymmm: drilling it just creates so much friction, it smeares and your burn drill after drill
[03:08:24] <Jymmm> it's hard ?
[03:08:39] <Jymmm> oh, too soft?
[03:09:18] <morficmobile> don't think so, i filed on it, just gummy i guess, reminds me of drilling lead when you got too much rpm, but you keep it down and it drills like any other material
[03:10:33] <Jymmm> ah
[03:12:15] <morficmobile> don't think it was work hardening, never been a problem drilling at a spot where someone toasted a drill before
[03:12:57] <morficmobile> assembly used to do a lot of hand drilling from where engineering forgot holes for mounting brackets, and you know how most people drill with a variable speed hand drill....
[03:13:08] <Jymmm> I never work metal, was just curious.
[04:17:24] <morficmobile> so if i have a 10mm pitch on my ball screw and 2048pulse/rev, i get 10/25.4/2048" as inch/pulse revolution? it's just what SWPadnos already confirmed in April, just back then we did the sample math with 5TPI ballscrews, so just a hair under .0002" resolution?
[04:19:01] <morficmobile> there it is, "2500 line/rev is 10000 count/rev", i knew i had a 4x in mind there somewhere
[04:24:15] <morficmobile> i see my reply to pcw where ^ came from, but not where he says this (looking through logs)
[06:41:43] <morficmobile> hey Valen
[06:41:58] <Valen> mmmmmmmmmmmmmmmmmyus?
[06:42:13] <morficmobile> ? slow fingers?
[06:42:32] <Valen> trying to sound like a weirdo off the simpsons
[06:43:14] <Valen> so zup?
[06:44:18] <morficmobile> ah, weirdo, mkay
[06:44:32] <morficmobile> not much, surviving the last hour of work i guess :)
[06:44:43] <Valen> just got back from the movies
[06:46:28] <WalterN> where is a good place to get 500watt-1000watt servos?
[06:46:56] <Valen> magmotor are good for stuff
[06:47:07] <Valen> though retail on that size stuff is a bit expensive
[06:47:13] <WalterN> linky?
[06:48:23] <elmo40> ok, this is cool http://lazarenko.me/news/linux-monument-unveiled
[06:49:27] <WalterN> lol
[06:50:37] <Valen> http://www.magmotor.com/
[06:51:52] <WalterN> what does the 4pole and 8pole neodymium mean?
[06:52:49] <Valen> number of magnetic poles inside the motoy
[06:52:50] <Valen> motor
[06:53:00] <morficmobile> accurs to me that quadrature would have been the best term to grep in logs :/
[06:53:01] <Valen> generally more poles = more torque but slower
[06:53:48] <WalterN> hmm
[06:53:54] <WalterN> I'm not seeing prices...
[06:54:37] <morficmobile> WalterN: http://www.automationdirect.com/adc/Shopping/Catalog/Motion_Control
[06:55:27] <Valen> http://www.robotmarketplace.com/products/MAG-S28-400.html gives you an idea
[06:55:37] <Valen> those one are set for low voltage
[06:55:46] <Valen> they are cheap for their size
[06:57:47] <WalterN> 10Kw?
[06:57:49] <WalterN> o.0
[06:58:05] <WalterN> well, 9.3Kw
[06:58:12] <Valen> if your getting that from the RMP site thats a peak figure
[06:58:12] <WalterN> lol
[06:58:21] <WalterN> yeah, peak
[06:58:21] <Valen> we use them in combat robots
[06:58:32] <Valen> you got a big power supply right?
[06:58:57] <Valen> (we were thinking of using them, I was going to have a bank of lead acids to supply peak loads ;->)
[06:59:06] <WalterN> heh
[06:59:32] <WalterN> sheesh
[06:59:41] <WalterN> thats perfect for a spindle
[06:59:55] <WalterN> 5000RPM almost
[06:59:56] <Valen> you don't want a 32Kw spindle?
[07:00:03] <Valen> bit slow isnt it?
[07:00:10] <WalterN> enh
[07:00:15] <WalterN> twice that would be nice
[07:00:17] <WalterN> but
[07:00:19] <WalterN> lol
[07:00:34] <WalterN> I just want something for a mill for the X,Y, and Z
[07:00:42] <WalterN> 1000RPM is almost perfect
[07:00:56] <Valen> how big is the mill?
[07:00:58] <WalterN> for direct coupling
[07:01:02] <WalterN> *shrug*
[07:01:08] <WalterN> however big I make it
[07:01:13] <Valen> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?JakeAndRussells
[07:01:20] <Valen> scooter motors
[07:01:22] <Valen> made of win
[07:01:39] <WalterN> I was thinking about 2' x 2' of X and Y movement
[07:02:07] <Valen> yeah then scooter motors would do it easily I'd suggest
[07:03:15] <Valen> (and at a fraction of the price)
[07:03:22] <Valen> just need to get encoders
[07:03:30] <WalterN> how much are both?
[07:03:49] <WalterN> oh, I would prefer rotary encoders
[07:03:49] <Valen> encoders I've seen for $70 or so i believe
[07:03:58] <Valen> yeah thats what I'd suggest
[07:04:13] <Valen> motors you can probably find at council cleanups ;->
[07:04:20] <WalterN> ..?
[07:04:30] <Valen> junk yard
[07:04:46] <Valen> the kiddy scooters/carts etc
[07:04:57] <Valen> we got ours for ~$80 i think
[07:05:01] <Valen> we got 400W ones
[07:05:10] <WalterN> hmm
[07:05:55] <Valen> http://www.oatleyelectronics.com/
[07:08:49] <WalterN> I love RAID now
[07:09:07] <Valen> any paticular reason?
[07:09:09] <WalterN> had a hard drive fail in RAID1 that I was using for boot
[07:09:15] <WalterN> in my server
[07:09:21] <Valen> thats when its good
[07:09:24] <Valen> did you notice?
[07:09:39] <WalterN> got the replacement drive today and its rebuilding the RAID
[07:09:54] <WalterN> (software RAID)
[07:10:01] <WalterN> notice what?
[07:10:10] <Valen> i've had them fail and not noticed for a few months
[07:10:14] <WalterN> oh
[07:10:20] <WalterN> donno when it failed
[07:10:33] <WalterN> perhaps a month
[07:10:34] <WalterN> heh
[07:10:44] <Valen> i only use software raid
[07:10:51] <WalterN> cheaper :)
[07:11:05] <Valen> if your mbo dies and your using fakeraid your stuffed
[07:11:17] <Valen> you wont get your data back off unless you basically get the same mbo
[07:11:34] <WalterN> http://tiwake.com/img_0063_small.jpg
[07:11:37] <WalterN> :)
[07:13:43] <WalterN> anyway
[07:15:58] <elmo40> WalterN: too bad there isn't a way to make shorter Sata cables
[07:16:04] <elmo40> they really ruin a nice setup.
[07:16:20] <WalterN> enh
[07:16:26] <morficmobile> don't use mobo software raid, linux raid is nice..
[07:16:38] <WalterN> any shorter and I wouldent be able to get the drives out.. heh
[07:16:42] <elmo40> how much heat comes out of the perforation?
[07:16:51] <WalterN> not much
[07:16:54] <WalterN> at all
[07:16:55] <WalterN> heh
[07:17:17] <WalterN> thought more would have.. oh well
[07:17:19] <elmo40> why the vga cable? this isn't a NAS ?
[07:17:31] <WalterN> its a web server too
[07:17:43] <WalterN> and.. erm... email isnt quite working yet
[07:17:57] <elmo40> ah, trouble shooting. what OS?
[07:18:08] <WalterN> Ubuntu :)
[07:18:10] <elmo40> you mean you don't ssh into it? ;)
[07:18:21] <WalterN> neh, its sitting right next to me
[07:18:22] <elmo40> meh. buntu.
[07:19:02] <WalterN> :P
[07:19:54] <WalterN> Valen: so where do you get those scooter motors?
[07:20:14] <Valen> http://www.oatleyelectronics.com/
[07:20:33] <Valen> I prefer ssh into it
[07:20:44] <WalterN> that just says motor, not servos though
[07:20:46] <Valen> mainly because xterm is higher resolution
[07:20:49] <Valen> its not a servo
[07:20:58] <Valen> you get the motor and add an encoder to it
[07:21:17] <WalterN> wouldent a servo be more precise?
[07:21:26] <elmo40> they are DC brushless motors?
[07:21:30] <Valen> what do you think a servo is?
[07:21:42] <elmo40> WalterN: I use this: http://blog.openmediavault.org/
[07:21:57] <WalterN> heh
[07:22:04] <elmo40> Debian Lenny. Add what you want. VERY stable.
[07:22:41] <elmo40> Valen: I have a few treadmill motors, approx 1.5Hp They are brushless DC motors. They could be made into a servo?
[07:22:57] <Valen> brushless is hard to make into servo
[07:23:13] <WalterN> dont servos handle PWM themselves?
[07:23:18] <WalterN> erm
[07:23:22] <WalterN> that came out funny
[07:23:23] <Valen> you need the encoder to be linked to the brushless driver
[07:24:27] <Valen> so it knows what the commutation state of the motor is
[07:25:02] <elmo40> so it isn't as simple as putting an encoder onto the shaft, eh? ;)
[07:25:08] <Valen> (the sensorless ones work because the rotation induces a voltage in the switched off coil and they use that to work out where it is)
[07:25:13] <Valen> not for brushless no
[07:25:18] <elmo40> damn.
[07:25:59] <elmo40> ok, what about braking? or the 'holding' strength? what tells the motor to stop spinning when I apply a force to it?
[07:26:29] <Valen> the force you apply to it?
[07:26:29] <elmo40> as in an axis drive. I don't want Y to move when I make a straight line in X
[07:26:38] <Valen> thats EMC's job
[07:26:50] <WalterN> based on the encoder?
[07:26:54] <elmo40> ok, it tells the driver where to go :-P
[07:27:14] <Valen> it will get pushed off, the encoder moves emc sees the error, the PID loop acts on it
[07:27:17] <elmo40> the feedback is given by the encoder? and EMC recalculates direction and speed?
[07:28:11] <Valen> yes
[07:28:41] <WalterN> hmm
[07:29:02] <elmo40> but brushless is more tricky then brushed because of unknown commutation state?
[07:29:50] <elmo40> I want to get this working, picked up 3 powered treadmills for free. 1.5Hp Leeson motors. I guess it will take a few more steps to make it work.
[07:30:02] <elmo40> maybe I should look into scooter motors ;)
[07:31:47] <elmo40> now, what about having feedback on a stepper? is it more complicated then worth the effort?
[07:32:17] <Valen> it'll only tell you if you have ferror
[07:33:01] <WalterN> RAID1 is now done, woo
[07:34:10] <WalterN> now the other one can die now
[07:34:35] <psha> WalterN: what mb is used?
[07:34:54] <WalterN> erm, lol... s/now//g
[07:34:56] <elmo40> Valen: but it won't make any corrections?
[07:35:25] <WalterN> psha: intel atom made by supermidro
[07:35:30] <WalterN> *supermicro
[07:36:29] <psha> WalterN: atom 330?
[07:36:37] <WalterN> 510
[07:37:04] <WalterN> one of the newer ones
[07:38:08] <psha> on nm10 chipset?
[07:38:31] <elmo40> Valen: you know of any links to help me turn this brushless DC motor into a servo?
[07:38:54] <WalterN> psha: donno
[07:39:16] <psha> seem so since i don't see any cooler on board
[07:39:34] <WalterN> it wont quite work without a fan
[07:39:39] <WalterN> need one case fan
[07:40:01] <psha> hm
[07:40:10] <WalterN> 13watt processor
[07:40:11] <psha> my intel d510mo works fine without fans
[07:41:34] <psha> but i have case with perforations on both sides so there is some air flow
[07:41:47] <psha> small perforations though
[07:43:45] <psha> but it needs additional heatsink on chipset
[07:48:43] <WalterN> Valen: I'm eyeing http://www.dmm-tech.com/Pricing.html the third one down from the top
[07:48:55] <WalterN> "Dyn-2 Kit - High Torque AC Servo System"
[07:49:49] <WalterN> looks like it has an incoder as well
[07:51:02] <psha> WalterN: have you tested your board latencies?
[07:51:15] <WalterN> for what?
[07:51:18] <WalterN> what board?
[07:51:28] <psha> yours itx
[07:51:44] <WalterN> my server motherboard?
[07:51:47] <psha> or it's just home server?
[07:51:57] <WalterN> its just a home hobby server
[07:52:53] <WalterN> not too many ISP options here in montana ;)
[07:52:57] <psha> my 'small' home server is serving as emc testbed now so :) so was curious if you have tested yours
[07:53:20] <WalterN> no
[07:53:32] <WalterN> how do you test?
[07:53:36] <WalterN> well
[07:53:48] <WalterN> I wouldent use this anyway
[07:53:52] <psha> loaded it from livecd (from flash)
[07:54:13] <psha> so 'home server' stuff is left untouched
[07:54:21] <WalterN> psha: what do you think of that servo?
[07:54:40] <psha> nice board for noiseless home server :)
[07:54:50] <WalterN> o.0
[07:54:51] <WalterN> servo
[07:54:53] <WalterN> not server
[07:54:59] <WalterN> ^^
[07:55:03] <psha> i know only about servers :)
[07:55:44] <psha> First and only wokring stepper motor i've ever seen is living in my home less then one month :)
[07:55:45] <Jymmm> psha: Know about Rackable Systems (tm) ?
[07:58:40] <WalterN> Jymmm: what do you think about that servo?
[07:59:06] <Jymmm> WalterN: Lousy for a kids name.
[07:59:26] <WalterN> ..?
[07:59:57] <psha> Jymmm: not enought to say that i know them very well :)
[08:00:15] <Jymmm> k
[08:03:14] <psha> Jymmm: mostly about 'collected-from-ash/trash' systems since at work it's common task to rescue some not new stuff, like ~10yrs old computation cluster
[08:17:41] <Valen> elmo40: making a brushless ESC is not easy
[08:18:03] <Valen> encoders on steppers make no corrections
[08:18:08] <Valen> its just how EMC works
[08:19:01] <Valen> WalterN: Those are ac servo's they might not work as well at low RPM's
[08:19:12] <Valen> compare the cont and peak torques against the mags
[08:19:17] <Valen> other than that they are nifty
[08:19:22] <Valen> no brushes to wear out
[08:20:46] <WalterN> Valen: I coulent really find any other information on them though
[08:20:56] <Valen> on the magmotors?
[08:21:00] <Valen> they have big spec sheets
[08:23:15] <WalterN> http://www.dmm-tech.com/sitebuilder/images/7.2Nm-1Axis-443x335.jpg for that?
[08:23:17] <WalterN> where?
[08:24:06] <Valen> http://www.magmotor.com/brushed/brushed.html
[08:24:14] <Valen> click on the "stack"
[08:24:25] <Valen> though it says to the right of that peak and cont stall torques
[08:24:54] <WalterN> thats not right
[08:25:01] <WalterN> lol
[08:25:12] <WalterN> the link I gave says its 1000RPM
[08:32:08] <WalterN> maybe I should get one to play around with
[08:38:04] <morfic> funny, last thing i recall seeing was 1000rpm, now i am home and i see 1000rpm again
[08:38:07] <Valen> mag or ac?
[08:38:43] <Valen> where?
[08:39:16] <morfic> <WalterN> I just want something for a mill for the X,Y, and Z
[08:39:17] <morfic> <WalterN> 1000RPM is almost perfect
[08:39:20] <morfic> <WalterN> the link I gave says its 1000RPM
[08:39:44] <morfic> but for someone who just got home from night shift, that's funny :P
[08:44:55] <WalterN> heh
[08:45:21] <WalterN> now that I'm thinking about it
[08:45:37] <WalterN> when I left the mill at the end of the day, it was set at 1,000RPM
[08:45:42] <WalterN> manual mill
[08:45:53] <WalterN> lol
[08:48:34] <WalterN> Valen: http://www.dmm-tech.com/Pricing.html third picture down
[08:48:59] <Valen> pretty slow
[08:49:46] <WalterN> with a 5 tread/inch lead screw, rapid movements would be about what I want
[08:49:56] <WalterN> *thread
[08:50:29] <WalterN> slightly on the slow side
[08:50:45] <WalterN> but, a different lead screw could be chosen
[08:51:16] <Valen> I'd go for more RPM rather than that
[08:51:30] <WalterN> and do gear reduction?
[08:52:00] <Valen> no
[08:52:05] <Valen> bbl picking missus up
[08:52:38] <WalterN> then what would you do? have uber fast rapid movements and low torque?
[08:53:11] <WalterN> sleep
[09:12:19] <Valen> if you have a coarser thread you are doing the same thing
[09:12:35] <Valen> however electric motors generally put out more power at higher RPM
[09:12:49] <Valen> so keep the fine thread and use the high speed motor
[10:00:52] <Paragon39> Hello All, Could someone let me know what the Equivilent of a G79 (Cycle Start Code) is in EMC please? I am trying to build a post-processor.
[10:08:07] <micges_work> http://www.linuxcnc.org/docview/html//gcode_main.html#sub:G81-to-G89:
[10:16:15] <cnr437> hi :)
[12:02:06] <psha> awallin: around?
[13:07:05] <SWPadnos> man. people really need to not edit the wikipedia page if they don't know what they're talking about
[13:09:06] <psha> SWPadnos: check dev channel
[13:09:12] <SWPadnos> saw it
[13:09:21] <SWPadnos> haven't fully digested it yet
[13:10:56] <psha> 3 patches: awk script, small init/copy code, and huge s/halui_data/halui_new/ replacement
[13:11:06] <psha> others are nose
[13:11:09] <psha> noise
[13:11:33] <SWPadnos> yeah, the awk thing makes me queasy just on principle :)
[13:13:25] <psha> hm anyone tried to breed emc with some computer-vision systems?
[13:14:39] <SWPadnos> there have been some discussions on the topic, both for positioning (mainly edge or zero finding) and for measurement (ie, part scanning)
[13:16:51] <psha> ml? or somewhere else?
[13:17:07] <SWPadnos> ml?
[13:17:19] <SWPadnos> oh, mailing list
[13:17:42] <SWPadnos> hmmm. some on the mailing list I think (recent even), some in person at CNC workshop or the like, etc
[13:17:56] <psha> mailing list
[13:18:39] <psha> i'll search mailing list then
[13:25:24] <archivist_> psha, and the odd bit of natter in here
[13:26:47] <archivist_> I have been thinking along camera lines due to a the cutter shape I want to align
[13:28:36] <psha> I've to implement only positioning
[13:29:09] <psha> but core problem is common - most of CV cameras are windows-oriented...
[13:29:22] <psha> for some of them there are linux drivers though
[13:29:43] <archivist_> I have had a webcam running while emc is running
[13:30:19] <psha> heh, webcam won't help me :(
[13:30:44] <archivist_> yup quality was rubbish
[13:30:47] <psha> i need 5um precision
[13:31:07] <archivist_> well lenses and calibration are going to be fun
[13:31:37] <SWPadnos> many/most cameras will work with Linux, I'm sure. openCV may be a good place to start writing image analysis software
[13:31:49] <psha> opencv project seem to be good start point
[13:31:53] <psha> too late :)
[13:32:16] <SWPadnos> and openCV will have a CUDA-based version some time next year (first or second quarter, if I remember correctly)
[13:32:22] <archivist_> checkout telecentric lenses too
[13:32:35] <SWPadnos> or use a longer focal length :)
[13:35:02] <psha> it seem i have to use two cameras
[13:35:16] <psha> first for rought positioning and second for preciese
[13:37:26] <atmega> I did a camera system for laser welding position, but it was only accurate to 0.001"
[13:37:27] <SWPadnos> rough positioning could be done by a human, or by using the encoders (or whatever other feedback you have)
[13:38:09] <SWPadnos> or you can use a zoom lens with stops set at two focal lengths (though focus could be an issue)
[13:39:06] <psha> SWPadnos: question is if two fixed lens would be cheaper then one zoom :)
[13:39:30] <SWPadnos> two whole cameras actually, since you can't swap lenses on the fly (without something very very very expensive)
[13:39:36] <psha> atmega: what hw are you using?
[13:40:00] <SWPadnos> unless you're just talking about putting a teleconverter or other additional element in front of the lens
[13:40:24] <psha> SWPadnos: i understand that changing lens on camera insude workarea of mechanical cutter is not best idea :)
[13:40:41] <SWPadnos> and also not all that easy, since they generally have a bayonet or screw mount
[13:40:54] <SWPadnos> regardless of cutting fluid/swarf flying
[13:41:18] <psha> so i'll look for zoom cameras...
[13:41:20] <archivist_> or straightness of the optical paths
[13:41:22] <SWPadnos> heh
[13:41:36] <psha> but at first i'll try to do it with webcam on my wife's notebook )
[13:42:08] <SWPadnos> yeah, the actual lens(es) are a minor issue compared to actually finding stuff in the frame and getting position information to EMC
[13:42:49] <psha> opencv seem to be right solution for this
[13:43:04] <psha> but #^&#@ they have horrible examples
[13:43:08] <psha> i've downloaded one
[13:43:14] <SWPadnos> seems to be, though I haven't gotten anything to work with it yet
[13:43:16] <psha> and was struggling with loading image
[13:43:29] <psha> img=cvLoadImage( "03.jpg ", CV_LOAD_IMAGE_UNCHANGED );
[13:43:32] <psha> this code was not working
[13:43:36] <SWPadnos> I'm using Harpia, which is a graphical program generator, and that's probably half my problem
[13:43:43] <SWPadnos> the other half is that I don't know what I'm doing :)
[13:43:52] <psha> whitespace after filename is not that easy to notice...
[13:43:57] <SWPadnos> heh
[13:44:42] <atmega> wonder if that failure is OS specific
[13:45:16] <psha> example file is named 3.jpg
[13:45:19] <SWPadnos> it would work on Linux if you actually had a file called "03.jpg\ "
[13:45:20] <psha> without 0
[13:45:25] <psha> and this is not os specific :)
[13:45:30] <SWPadnos> (spaces are legal :) )
[13:45:51] <atmega> yes, but it might work with 03.jpg no space in win32
[13:46:07] <SWPadnos> no, the 0 would screw it up on Windows too
[13:46:12] <atmega> the 0 though... that's just not happening
[13:46:54] <psha> at a first glance opencv has everything i need
[13:47:13] <atmega> at first glance, many OpenSource projects have everything you need
[13:47:55] <psha> atmega: and at second it's always possible to add parts not needed :)
[13:48:01] <atmega> yep
[13:49:18] <atmega> emc is flawed in that it works, and is actually useful. It sets unrealistic expectations.
[13:49:31] <psha> at least opecv is used for far more difficult tasks then simple marker tracking
[13:51:12] <psha> SWPadnos: are halui patches ok?
[13:51:23] <SWPadnos> no idea, I've been doing other things :)
[13:51:25] <psha> at least many signals at once are handled properly
[13:51:28] <psha> :)
[13:51:47] <psha> knock where you'll have time to look trough them
[13:53:16] <SWPadnos> ok. that should be some time in November
[13:53:17] <SWPadnos> maybe
[13:53:38] <psha> :)
[13:57:02] <psha> it seem that i've exceeded my quota for patches :)
[15:19:21] <MattyMatt> cheapest 4th axis in the world http://imagebin.ca/view/wg8wbifr.html
[15:21:36] <elmo40> lol
[15:21:38] <elmo40> why not?
[15:21:40] <elmo40> ;)
[15:21:46] <elmo40> I like it... will do the same!
[15:22:08] <elmo40> but 1.8deg / step isn't very high resolution...
[15:22:32] <awallin> would suggest a vacuum cleaner...
[15:22:34] <elmo40> but I need to get a tiny bit like that.
[15:22:37] <elmo40> yes, that too!
[15:22:57] <elmo40> I need to make a box around mine. the house smells like wet saw dust when I am done :-/
[15:23:13] <MattyMatt> 0.9deg on half step
[15:24:55] <elmo40> the sticker on my motor says 1.8, will it still do half step?
[15:26:08] <MattyMatt> yep, nearly all drivers do half-step at least. most do microsteps these days but that's not so reliable for fine positioning
[15:27:04] <MattyMatt> half step is full current in both coils, so it's dependable
[15:28:16] <MattyMatt> I'm making a 9:1 pulley next, so I have 0.1deg res
[15:29:13] <MattyMatt> and then I'll use that to mill a wormgear, to give 0.01deg etc etc etc
[15:30:14] <MattyMatt> luckily these pulleys I'm milling first have 8 teeth, which divides nicely into 200
[16:05:05] <MattyMatt> I suppose I ought to fix up the 'shop' vac (plastic aquavac)
[16:05:48] <MattyMatt> I have half a box round mine, so I'm working towards an integral "dust management system"
[16:07:51] <MattyMatt> a cold air blower for cooling and blowing the dust under the table, where a big funnel will collect it in a bucket
[16:08:40] <MattyMatt> this is supposed to be a metalwork machine one day, but I suppose I should start again for that
[16:13:35] <elmo40> ya, mine will be for wood too. need to slowly make one for metal. stronger rails, variable speed spindle, steel framing.
[16:26:59] <tom3p> anyone know the phoenix part number for the plug connector on mesa 7i33T?
[16:27:00] <tom3p> the description says 3.5mm tho i measure 1.25" over 10 pins
[16:36:35] <jepler> 15 minutes of internet fame coming right up for emc2 user hugomatic. http://blog.makezine.com/archive/2010/09/very_very_serious_tic-tac-toe_game.html
[16:40:17] <elmo40> maybe a little more then 15min? http://machinetouch.appspot.com/tictactoe.py
[16:40:44] <MattyMatt> what a waste of billet & bronze
[16:42:01] <MattyMatt> I should do a chess set now I've got 4 axises
[16:42:20] <elmo40> ;)
[16:45:38] <tom3p> not phoenix contact , similar from cixi rijing http://en.cxrj.com.cn/products_detail/&productId=6e6bf8d9-40e9-43fe-b4f2-01f29a7362da&comp_stats=comp-FrontProducts_list01-1277178005206.html
[16:45:40] <WalterN> do they make ball screws that are 10threads/inch and about 1" in diameter?
[16:45:52] <WalterN> 10-15threads/inch
[16:46:36] <WalterN> actually, I think thats a standard size, at least for a normal thread
[16:47:40] <MattyMatt> I've never seen ballscrews with a pitch that narrow. do they have any advantages over acme at that angle?
[16:49:36] <WalterN> never seen ballscews that narrow of pitch either
[16:49:59] <WalterN> but, havent exactly gone looking, thought I would ask
[16:50:54] <MattyMatt> the balls would have to less than the pitch, for a start. I've been messing about designing a ballnut that uses M8 stud, the balls have to be 1.0mm or 1.2mm
[16:51:43] <WalterN> interesting
[16:52:41] <WalterN> the omni-turn lathe I'm fairly sure uses 5thread/inch
[16:53:06] <MattyMatt> yeah 5mm pitch they are common
[16:53:17] <MattyMatt> the most common I'd say
[16:55:40] <MattyMatt> the imperial ones I've seen have been twin helix 1/2" pitch
[16:58:25] <WalterN> MattyMatt: I've been thinking about getting http://www.dmm-tech.com/Pricing.html third picture down
[16:58:52] <WalterN> 1000 RPM is perfect for a direct coupling
[16:59:40] <WalterN> but cant really find specs on it
[16:59:55] <elmo40> what more do you want?
[16:59:56] <elmo40> 2.9 Nm(409 Oz-in)
[17:00:03] <elmo40> weak motor for direct coupling.
[17:00:15] <elmo40> for metal, anyways.
[17:00:46] <WalterN> hmm
[17:01:23] <WalterN> how do you turn a torque into a linear force?
[17:02:06] <MattyMatt> fine pitch leadscrew :) I don't use m8 because it's cheap, I use it because it's GOOD >:)
[17:03:20] <MattyMatt> my Y axis is godawful slow. I've just been drooling over second hand ballscrews
[17:04:04] <MattyMatt> with steppers you've got all the torque you need already. just gimme some SPEED
[17:05:50] <MattyMatt> http://cgi.ebay.com/VEXTA-Stepping-Stepper-Motor-PK569AUHA-/200507166700
[17:06:26] <MattyMatt> only 230ozin, but a 5 phase can do 3000rpm unloaded
[17:06:39] <WalterN> elmo40: lets say its connected to a 1" diameter ball screw thats 5thread/inch... what kind of linear force is that?
[17:07:25] <elmo40> does no one else have this issue with EMC 10.04? I open Axis, run a part. Complete the machining. Try to edit the file and I get an error dealing with 'read only file system'. I click on Shutdown (in the top right corner) and nothing happens. I can't open firefox, console, nothing. This will occur every time after I machine a part. Seems like Axis (or something) is locking the file system.
[17:07:38] <MattyMatt> and the downside of 5 phase -> http://cgi.ebay.com/SUPER-VEXTA-5-PHASE-STEPPER-STEPPING-DRIVER-UDK5114NA-/360297166553
[17:08:20] <elmo40> MattyMatt: price? that the only downside?
[17:08:39] <MattyMatt> afaik there are no other downsides
[17:09:43] <MattyMatt> they are 500 full steps/rev, they have more torque for the size, and can run much faster than 2 phase steppers
[17:10:18] <MattyMatt> the motors are usually similar price, it's the drivers that cost
[17:11:30] <WalterN> nice selection of servo motors...
[17:17:26] <skunkworks> walter: force= (torque*2*PI*Eff)/pitch
[17:17:45] <skunkworks> the eff of ballscrews are around .9
[17:18:17] <JT-Hardinge> what rpm would you rigid tap a 1/4-20 into A36 1/4" thick?
[17:18:22] <skunkworks> watch units - make sure your force and pitch are the same distance (both inches or foot)
[17:18:51] <WalterN> JT-Hardinge: whats A36?
[17:19:37] <JT-Hardinge> structural steel like square tube
[17:19:43] <MattyMatt> it's a very very small piece of paper >:)
[17:19:57] <WalterN> is it mild steel?
[17:20:33] <WalterN> 1018, 4140...
[17:20:35] <JT-Hardinge> yes
[17:20:39] <JT-Hardinge> none of them
[17:20:59] <skunkworks> so - example. Our machine has 40ft-lbs of torque at the ball screw. The pitch is .3333in. So 40ft-lb = 480in-lbs. then (480in-lbs*2*3.1415*.9)/.333=8151lbs of force.
[17:21:02] <Jymmm> No, A36 is on Chinesium Bingo... Bango
[17:21:06] <WalterN> with coolant flooding?
[17:21:08] <JT-Hardinge> it might be like a 1008
[17:21:13] <JT-Hardinge> yes
[17:21:38] <WalterN> you can go fairly fast then
[17:21:54] <JT-Hardinge> fairly = ?
[17:22:02] <WalterN> 600-800RPM?
[17:22:08] <JT-Hardinge> ok
[17:22:21] <WalterN> I'd do 500 though :P
[17:22:39] <JT-Hardinge> it is my first rigid tapping experience so I'll start maybe 300 and see
[17:23:25] <WalterN> if you go really fast with a dull tap the results can be fun :)
[17:23:29] <Jymmm> JT-Hardinge: Make sure you use protection, we wouldn't want any baby JT-Hardinge's running around.
[17:24:15] <WalterN> skunkworks: thanks much
[17:24:40] <Jymmm> JT-Hardinge: Do you have any scrap to test on ?
[17:24:50] <MattyMatt> machining is full of knob gags. greasy shafts and so forth
[17:25:46] <Paragon39_> Paragon39_ is now known as Paragon39
[17:26:09] <JT-Hardinge> plenty of scrap
[17:26:25] <JT-Hardinge> WalterN: brand new electro coated spiral point taps :)
[17:26:59] <MattyMatt> mm, a spinning broach
[17:27:31] <WalterN> skunkworks: so that motor that I linked to would be 28-29lbs of force? :/
[17:27:32] <JT-Hardinge> heh, I get to broach some holes next week for the first time
[17:28:15] <skunkworks> ?
[17:28:30] <WalterN> 409oz-in
[17:28:46] <WalterN> and 5thread/inch ballscrew
[17:30:07] <Jymmm> JT-Hardinge: Maybe you can play with scrap and see what speed works well?
[17:30:09] <skunkworks> I get 722lbs
[17:30:28] <WalterN> wait, what?
[17:32:03] <skunkworks> 409in-oz is 25.6in-lbs - so (25.6*2*3.1415*.9)/.2 = 720lbs of force
[17:32:29] <WalterN> oh
[17:33:21] <WalterN> thats not bad, considering what it will be used for
[17:33:25] <skunkworks> is that rating peak though?
[17:33:31] <WalterN> no
[17:33:37] <skunkworks> continuous?
[17:33:38] <WalterN> peak is over twice that
[17:33:55] <WalterN> 1015oz-in
[17:33:57] <skunkworks> oh - ok - that seems like what you where looking for then - right?
[17:34:14] <WalterN> its just for an engraving machine I want to make :)
[17:35:21] <WalterN> I should order one to play around with
[17:36:39] <MattyMatt> engraving stone?
[17:37:14] <MattyMatt> I can engrave anything softer than that with my 60 oz in steppers :)
[17:37:18] <WalterN> something like this... http://www.artcotools.com/compete-nsk-e3000-series-spindle-system-60000-rpm-pr-16758.html
[17:37:51] <skunkworks> WalterN: I don't think those servos will work with emc.
[17:37:57] <skunkworks> *servo drives)
[17:38:13] <MattyMatt> oh you just like spending money :) my spindle does 36krpm for under $40
[17:38:19] <WalterN> skunkworks: thats fine too..
[17:39:04] <WalterN> MattyMatt: we've had this conversation before, do you remember how it went?
[17:39:16] <JT-Hardinge> Jymmm: I cut air first then go for broke
[17:39:19] <MattyMatt> I had a neat idea for a cheap upgrade too. proxxon steel collet set
[17:39:31] <Jymmm> JT-Hardinge: heh
[17:41:53] <JT-Hardinge> yea! my new vise is here
[17:41:59] <JT-Hardinge> and dam it is heavy
[17:42:07] <WalterN> skunkworks: I'm mostly after the servos.. though I bet if I asked nicely they would probably sell just the servo...
[17:43:44] <skunkworks> you are looking at the ac servo?
[17:44:09] <skunkworks> finding a drive to work with it may be an issue (after the fact)
[17:44:33] <WalterN> are AC servos not as popular?
[17:45:27] <skunkworks> very popular. but they are usually bought as a pair - drive and servo
[17:46:29] <WalterN> hmm
[17:50:03] <rooks> micges, hi, in case youve been wondering what i was up to, http://pleasanthacking.com/2010/09/29/gaia-system/ :)
[17:50:30] <SWPadnos> that drive has an analog input for speed setting, 0-10V
[17:50:58] <skunkworks> SWPadnos: cool
[17:51:01] <skunkworks> where did you find that?
[17:51:03] <SWPadnos> here's the manual: http://www.nsk-nakanishi.co.jp/en/industrial/download/pdf/e3000_en.pdf
[17:51:13] <skunkworks> is it mag+dir?
[17:51:22] <SWPadnos> I don't know that it can reverse
[17:51:27] <SWPadnos> you can read that far :)
[17:51:37] <skunkworks> heh
[17:52:11] <skunkworks> wait - what are we talkinga bout?
[17:52:12] <MattyMatt> andypugh, http://imagebin.ca/view/wg8wbifr.html
[17:53:07] <skunkworks> I was talking about http://www.dmm-tech.com/Pricing.html - third picture down
[17:53:54] <andypugh> jepler: Did you write the pluto_stepper and pluto_servo comps? A chap on the forum is asking if it is possible to run one of each if you have two parallel ports. I have guessed at "yes", but would like to be sure before the guy pays 3x the cost of a board for postage.
[17:54:58] <andypugh> MattyMatt: Going into the Windmill business?
[17:55:22] <jepler> andypugh: I have never done that, so I can't give a positive answer.
[17:55:28] <MattyMatt> just into the cog & pulley trade :) and chess pieces
[17:55:30] <andypugh> MattyMatt: The next picture thumbnail frightened me, the crop makes it look like you managed to sever two digits.
[17:55:44] <MattyMatt> not my digits
[17:56:07] <micges> rooks: cool name :D
[17:56:08] <MattyMatt> I gotta stop posting next to self-mutilators. that's happened before
[17:56:19] <rooks> thanks :P
[17:56:31] <andypugh> jepler: What would be your guess?
[17:58:34] <skunkworks> http://media.unpythonic.net/emergent-files/sandbox/pluto_servo.html
[17:58:35] <jepler> andypugh: I'd tell this person to buy a mesa board instead.
[17:58:46] <skunkworks> look at PC interface
[17:58:56] <skunkworks> I agree with jepler though.
[18:00:03] <andypugh> Ah, yes, that seems to indicate that one-per-baord is doable. Looking at the price, though, a single 7i43 looks like a much better idea.
[18:00:14] <jepler> anyway, in principle the pluto_servo and pluto_step hal components can both be loaded at the same time, so that would seem to furnish a way around the "one board only" limitation.
[18:00:34] <andypugh> one-per-port I mena
[18:00:40] <andypugh> "mean"
[18:01:09] <jepler> but the pluto hardware is junk compared to anything coming out of mesa, and the emc2 hostmot2 drivers are also better maintained
[18:02:46] <SWPadnos> skunkworks, ok, that drive can also use analog, step/dir, or CW/CCW pulsing for input
[18:03:02] <skunkworks> well - there you go!
[18:04:54] <andypugh> The Mesa drivers are partly maintained by an incompetent, though. :-)
[18:05:03] <skunkworks> it has an absolute encoder - does it have provisions for quadature out?
[18:09:26] <andypugh> Has anyone tried the dmm-tech kits? The price looks very competitive.
[18:14:17] <JT-Hardinge> well that went nicely
[18:15:22] <JT-Hardinge> WalterN: if your in the USA I get OEM pricing on Panasonic servos and drives
[18:23:18] <L84Supper> http://cgi.ebay.com/Large-Belt-Driven-Positioner-70-Travel-Size-34-Mount-/310223046079?pt=LH_DefaultDomain_0&hash=item483abc05bf maybe my next mini-lathe will start here
[18:24:35] <JT-Hardinge> not much torque on those guys
[18:24:40] <JT-Hardinge> more for speed
[18:29:16] <L84Supper> http://www.theleeco.com/EFSWEB2.NSF/MDG!OpenView anyone know of other suppliers of these micro dispensing valves?
[18:31:39] <L84Supper> looking for at least 0.25msec on/off times, ~100 micron orifice
[18:32:19] <andypugh> Have you considered fuel-injectors?
[18:32:29] <L84Supper> there seems to be a void between inkjet heads and micro valves for speed and drop size
[18:33:05] <L84Supper> andypugh: yes, I'm trying to track some down that are only a few mm in dia
[18:33:58] <L84Supper> the other issues have been finding specs, most just seem to be replacements for small auto engines
[18:35:12] <andypugh> http://fiche.worldofpowersports.com/wps/Yamaha_OEM/YamahaMC.asp?Type=13&A=456&B=12
[18:35:38] <andypugh> (Don't pay that price, they all get crashed at less than 10k miles, go to a bike breaker or eBay)
[18:36:08] <L84Supper> I need about 20k-30k of them :)
[18:36:12] <L84Supper> possibly
[18:36:21] <WalterN> JT-Hardinge: really? is there a list of motors you have available?
[18:37:42] <JT-Hardinge> all the industrial ones http://industrial.panasonic.com/ww/i_e/25000/fa_pro_acs_e/fa_pro_acs_e.html
[18:37:44] <andypugh> L84Supper: At that quantity I think you get to tell the manufacturer what spec you want.
[18:38:29] <L84Supper> andypugh: maybe, the auto guys get orders in the millions
[18:38:55] <L84Supper> I'd like to find something <10mm dia
[18:39:13] <L84Supper> 3-5mm would be ideal
[18:41:22] <skunkworks> SWPadnos: where did you find that?
[18:41:28] <andypugh> What's the application?
[18:41:37] <SWPadnos> in the manual
[18:41:51] <WalterN> JT-Hardinge: how does pricing work?
[18:42:01] <andypugh> In the spec, the manual doesn't mention it :-)
[18:42:45] <andypugh> JP3 takes analogue or pulse/dir. No mention of encoder output.
[18:43:24] <L84Supper> andypugh: fluid deposition for viscosities higher and with larger drop volumes than what's used in inkjets
[18:45:02] <andypugh> I wonder if you could use a system like on ye olde worlde dotte matrix printers, where the solenoids were quite big, but operated converging wires.
[18:45:32] <andypugh> I suspect that the industrial paint matrix marker systems have solved the problem?
[18:46:25] <L84Supper> andypugh: the only drawback to the valves they use are the only ~1000 firing speed
[18:46:41] <L84Supper> ~1000 hz
[18:47:04] <andypugh> I wonder if that is because of the viscosity of the material being valved?
[18:47:41] <L84Supper> what I was wondering, but even with water they are 1000 hz
[18:52:38] <andypugh> http://news.thomasnet.com/fullstory/Solenoid-Valve-has-ultra-miniature-design-467124
[18:52:50] <andypugh> Ah, no, that's 1mS too
[18:53:12] <L84Supper> yeah, those are the ones by Lee Co.
[18:54:05] <L84Supper> micro fuel injector or DIY seems to be the way
[18:54:06] <JT-Hardinge> WalterN: I have to get a quote from my distributer
[18:54:37] <JT-Hardinge> I usually let them spec the drive out cause if they are wrong they take it back :)
[18:54:58] <WalterN> hmm
[18:56:05] <WalterN> JT-Hardinge: is there an easy way to find one that is 500-800watts and in the 1,000-2,000 RPM range?
[18:56:15] <andypugh> L84Supper: Aye, I was thinking you might have to just design one. (Actually, you could design the whole matrix in a block, probably better)
[18:56:57] <archivist_attic> separate for the magnetics probably
[18:57:13] <L84Supper> http://etd.lsu.edu/docs/available/etd-01292004-141532/unrestricted/Morris_thesis.pdf maybe like he did ;)
[18:59:17] <andypugh> A serious suggestion would be to track him down and pay him to design it for you.
[18:59:48] <L84Supper> he was trying to atomize the fluid but if your media is on 1mm from the nozzle it should work as long as the pressure doesn't turn the fluid into a saw
[19:00:06] <L84Supper> sp only/on 1mm
[19:00:56] <andypugh> Written in 2004 for a masters thesis. He/she is probably still looking for a job...
[19:02:13] <archivist_attic> ive seen no mention of valves in that article yet
[19:02:48] <L84Supper> he was designing fuel injectors
[19:04:00] <archivist_attic> I know
[19:23:22] <JT-Hardinge> WalterN: http://industrial.panasonic.com/ww/i_e/25000/fa_pro_acs_minas_a4_e/fa_pro_acs_minas_a4_e/a4_16.pdf
[19:25:00] <WalterN> o.0
[19:25:09] <WalterN> those are beefy servos
[19:35:59] <JT-Hardinge> more here http://industrial.panasonic.com/ww/i_e/25000/fa_pro_acs_e/fa_pro_acs_e/a4.html
[19:37:20] <WalterN> what does low inertia mean?
[19:38:04] <awallin> fast acceleration
[20:22:08] <JT-Hardinge> * JT-Hardinge heads to the other shop now
[20:28:17] <roberth_> any body in UK want a nice project. http://cgi.ebay.co.uk/Cnc-lathe-hardinge-turning-milling-spares-repairs-/200523535976?pt=UK_Home_Garden_PowerTools_SM&hash=item2eb0225668
[20:30:36] <andypugh> Spotted that, and yes I do want it, but don't have the space
[20:31:09] <Jymmm> andypugh: Replace your bed with a hamock, then you'll have room
[20:32:07] <andypugh> Ye think I ain't already sleeping in a hammock, me hearty?
[20:32:08] <roberth_> lol
[20:32:27] <Jymmm> heh
[20:32:29] <roberth_> prob find away to sleep in machine guarding
[20:34:08] <roberth_> its been on there for quite some time that hnc now
[20:36:36] <qq-> roberth_, any ideas how many axis ?
[20:37:05] <roberth_> 2x X and Z
[20:37:19] <roberth_> o, and a top slide parting
[20:37:27] <roberth_> sitting on top of spindle
[20:37:53] <roberth_> thats a air motor driven normaly so not a motor axis, but could be changed i guess
[20:38:00] <andypugh> I am more tempted to offer an EMC2 retrofit.
[20:38:09] <roberth_> yea we said tht
[20:38:19] <ds2> SD Zoo
[20:38:20] <roberth_> we said, maybe he wants to buy out Fanuc6 spares from our retros
[20:39:15] <andypugh> They would be very close to me, were it not for the thames. http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=FTIXEwMdqLQHACljY-rWbsTYRzEpbJAn_vyFDg%3BFbuhEAMdSnEMACnvJdazLirZRzEQz8zMyIURCg&q=SS13+1RT+to+minster,+kent&sll=53.800651,-4.064941&sspn=20.121063,47.285156&ie=UTF8&ll=51.438601,0.561676&spn=0.330434,0.738831&t=h&z=11&saddr=SS13+1RT&daddr=minster,+kent
[20:39:17] <roberth_> we have a HNC , but it sits out in other shed with other machines that we no longer use.. since we got the CHNC we never used it.
[20:39:37] <roberth_> ya need a boat lol
[20:39:58] <roberth_> i am other side of cambridge
[20:41:39] <andypugh> Some friends of mine lived just north of Cambridge, they raced motorbikes. Called themselves Over Competitive.
[20:49:35] <andypugh> Perhaps that needed explanation: http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=Over,+cambs&sll=51.438601,0.561676&sspn=0.330434,0.738831&ie=UTF8&hq=&hnear=Over,+Cambridge,+United+Kingdom&ll=52.316507,0.015965&spn=0.040505,0.092354&t=h&z=14
[20:52:42] <roberth_> thats ok, im sitting here reading manuals to see what they wired on a machine im retrofitting
[21:17:47] <archivist> bugger shame I cant afford that toy at the moment
[21:20:32] <andypugh> I can lend you the money. :-) Hate to see it go to scrap.
[21:21:04] <archivist> transport costs will swamp it too
[21:21:21] <archivist> just round the corner for you
[21:21:36] <andypugh> It's quite a big corner. Sadly I have rather a small garage
[21:22:04] <archivist> I have a leaky garage with a missing door
[21:22:56] <andypugh> I was actually rather more tempted by: http://cgi.ebay.co.uk/WILSON-240VOLT-SINGLE-PHASE-LATHE-/280564576821
[21:24:19] <archivist> never heard of that make but looks solid
[21:26:31] <archivist> I do need some proper work to pay for toys
[21:30:04] <andypugh> Lathes.co.uk is quite complimentary about Willson lathes. I find the slant-bed appealing (and I think they did it first)
[21:31:23] <JT-Hardinge> hmmm rigid tapping is not all that exciting after you have done 30 or 40...
[21:32:09] <andypugh> I think the point is that it is less boring than the alternative :-)
[21:34:03] <archivist> the alternative is bad on the hands
[21:35:46] <archivist> I held a drill chuck and used hand friction and did a 1000 off 4mm holes for a job :(
[21:36:08] <archivist> luckily the lathe had a nice fast reverse
[21:41:16] <andypugh> Cordless drils work well
[21:42:19] <archivist> I break more taps that way
[21:43:02] <archivist> machine tap and some guiding by the tailstock helps a lot
[21:45:09] <JT-Hardinge> I did about 1000 1/4-20 tapped holes in some 1/8" tubing once with a drill. I got trigger finger from it
[21:45:22] <JT-Hardinge> 1/8" thick tubing
[21:46:01] <archivist> our were tattoo buzzer cores 8mm stainless
[21:46:46] <archivist> boss was on the capstan down in the basement I was tapping on a schaublin
[21:46:51] <JT-Hardinge> this was some big sheet metal covers on some machines I built
[21:46:57] <archivist> bored witless
[21:48:07] <JT-Hardinge> schaublin web site says high precision lathes
[21:48:32] <JT-Hardinge> oh, and VMC's
[21:48:54] <archivist> its not the job a lathe like that was designed for :)
[22:31:34] <L84Supper> http://www.cnczone.com/forums/showthread.php?t=67218 are there any other deals out there for replacing the leadscrews on Bridgeports?
[22:46:57] <Valen> linearmotionbearings2008 has transport grade screws really cheap
[22:56:08] <L84Supper> hmmm 50mi vs 6000mi... to bad shipping takes 2-3weeks
[22:57:19] <Valen> although that automation direct place seems pretty cheap
[22:58:16] <L84Supper> one of the flebay bridgeports I picked up is from 58' and has 50 mil lash
[23:15:37] <andypugh> www.slidesandballscrews.co.uk are cheap, and shipping is very cheap if you are in the UK. (amd less so if you are not)
[23:17:06] <Valen> do they know the rest of the world exists?
[23:18:33] <andypugh> I think so. (probably more so than most US stores). They are certainly aware of China, they have "Gten ballscrews" and "Chinese brand ballscrews"
[23:19:42] <andypugh> (Checks Valen's info) You need shipping to Niger?
[23:19:54] <Valen> heh australia
[23:20:16] <Valen> when i whois me it tells me sweeden
[23:20:46] <andypugh> seems daft to ship china-uk-aus
[23:23:37] <andypugh> They offer Austrailia as a country when you try to create an account, so that is one-up on the US sites that won't talk to you without a ZIP code. (I wonder if the US mail-order market has twigged how many people live in 90120 ? )
[23:23:54] <salvarane> hello
[23:24:22] <andypugh> (I mean 90210 it, seems, after a google)
[23:24:27] <andypugh> Hi Salvarane
[23:24:43] <Valen> heh
[23:27:59] <salvarane> I installed emc2 on mi pc , when I run the program for executing a gcode , the emc2 program exceed the dimension of the a piece of iron
[23:37:37] <salvarane> sorry
[23:37:38] <Valen> you need to look at the scale you have set
[23:38:26] <salvarane> can I send you my file stepper_mm
[23:38:36] <Valen> no
[23:39:38] <salvarane> sorry how can set scale into my stepper_mm file
[23:40:31] <Valen> i dont know
[23:40:42] <Valen> you need to tell us more about what actually happened
[23:43:05] <salvarane> I charge the gcode file into emc in metric system and emc is configured in metric system, my piece of iron is lenght 140x65 mm,
[23:44:55] <salvarane> unfortunately the piece worked from emc and of 155x72mm
[23:46:35] <salvarane> when I give the command g00 x10 , the axis X it is moved of 15 mm
[23:49:59] <salvarane> I have mounted two pulegge, 1┬░pulley Diameter 20mm teeth 20 and 2┬░ pulley Diameter 40 mm tries 40
[23:52:57] <salvarane> step screw from 4mm