#linuxcnc | Logs for 2014-10-29

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[00:22:38] <PetefromTn_> http://www.ebay.com/itm/Leadshine-easy-servo-Drive-ES-D1008-ES-M23480-2-Phase-NEMA-34-motor-8-0N-m-/161386500789?pt=LH_DefaultDomain_0&hash=item25936292b5
[00:22:45] <PetefromTn_> Anyone know anything about these?
[00:24:57] <PCW> looks like a closed loop step motor
[00:25:10] <PetefromTn_> yeah just reading thru it.
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[00:25:24] <PetefromTn_> PCW I just mailed out my 7i77 to you guys this afternoon
[00:25:40] <PetefromTn_> As you recall I released the Magic smoke on it
[00:25:49] <PetefromTn_> hopefully it can be repaired
[00:26:00] <PCW> Maybe it can be resurrected
[00:26:14] <PetefromTn_> that would be sweet.
[00:26:15] <zeeshan|2> isnt it cheaper to buy a new one pcw?
[00:27:33] <PCW> depends on how severe the problem is I usually wont spend more than about 10 minutes on repairs of damaged cards
[00:28:00] <zeeshan|2> Expert level 99999999 unlocked
[00:28:28] <zeeshan|2> did you see
[00:28:30] <PCW> so if multiple parts are bad its scrap AFAIAC
[00:28:31] <zeeshan|2> the explosion today?
[00:28:32] <zeeshan|2> http://www.space.com/17933-nasa-television-webcasts-live-space-tv.html
[00:28:45] <zeeshan|2> private rocket blew up
[00:28:56] <zeeshan|2> oribital sciences antares rocket
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[00:34:18] <PCW> Just looked an the video... that was pretty dramatic
[00:34:25] <zeeshan|2> yea
[00:34:26] <zeeshan|2> its sad
[00:34:33] <zeeshan|2> i hope it doesnt negatively effect the private space market
[00:34:43] <zeeshan|2> the shockwave when it hit the ground is intense
[00:35:01] <cpresser> the buildbot package seems to lack the pncconf python module. any hints about that?
[00:35:27] <cpresser> when running pncconf, i get 'importError: no module named pncconf'
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[00:48:22] <CaptHindsight> PetefromTn_: take a look at the torque curves near the bottom of the page :(
[00:49:11] <PetefromTn_> already there.
[00:49:27] <PetefromTn_> not gonna cut it unless I want to have some slow rapids
[00:51:21] <PCW> cpresser: someone else noted that (it seem ok when built from master)
[00:52:41] <cpresser> PCW: i am currently compiling master manually...
[00:53:45] <PCW> Hmm i just tried and it runs here (but I may have fetched master a couple days ago)
[00:57:13] <PCW> let me pull and re-build and see if its busted (this is starting from the Wheezy ISO)
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[01:12:25] <PCW> just rebuilt master and pncconf seems fine
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[01:15:48] <cpresser> hmm.. i pulled the binary from the buildbot: 1:2.8.0~pre1.10.g33fc3dc
[01:15:59] <cpresser> same error... i am going to investigate furterh
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[01:49:49] <XXCoder> interesting/. http://www.computerworld.com/article/2839535/review-the-new-da-vinci-all-in-one-3d-scannerprinter.html
[01:50:12] <PetefromTn_> Any of you guys bought stuff from Aliexpress?
[01:50:20] <XXCoder> i did
[01:50:50] <PetefromTn_> what did you buy and how did it go?
[01:50:58] <XXCoder> well few stuff
[01:51:08] <XXCoder> one of em is wifi dongle for computer
[01:51:14] <XXCoder> works fine. just dont use their driver
[01:51:36] <XXCoder> in general quality isnt as good but many cases its fine
[01:51:58] <PetefromTn_> http://www.aliexpress.com/item/Best-price-great-quality-Servo-motor-set-2-39N-M-0-75KW-3000RPM-80ST-AC-Servo/1863383110.html Tempting
[01:53:03] <XXCoder> dunno on pricing but it probably will work. look for reviews
[01:55:01] <PetefromTn_> hard to say really.
[01:55:12] <PetefromTn_> But that is the motor size I need basically
[01:55:27] <PetefromTn_> http://www.ebay.com/itm/NEW-750W-0-75KW-ac-servo-motor-servo-driver-2-39N-M-80ST-80ST-M02430-3000RPM-/161454973914?pt=LH_DefaultDomain_0&hash=item25977763da
[01:55:31] <PetefromTn_> like this one.
[01:55:31] <XXCoder> well I'd say go for it and see
[02:00:41] <PetefromTn_> Yeah I've got some time to think about it while I repaint the machine and just generally R and R the thing.'
[02:08:21] <skunkworks_> PetefromTn_: why are not use existing servos?
[02:08:44] <PetefromTn_> well the one in it is a DC brushless with resolver feedback
[02:09:22] <PetefromTn_> and honestly I replaced the original servos in the Cincinatti with matched AC servos and drives and have been very happy with that decision so far.
[02:09:43] <skunkworks_> mesa has stuff for that...
[02:09:43] <PetefromTn_> nice to have brand new parts in there.
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[02:10:02] <PetefromTn_> the other thing is there is no Z motor
[02:10:09] <skunkworks_> ah
[02:10:11] <PetefromTn_> so I would need to buy one anyways
[02:10:18] <PetefromTn_> might as well get a matched pair.
[02:10:43] <PetefromTn_> the Teco motors and drives I used in the Cincinatti are working quite well.
[02:10:56] <PetefromTn_> they do not make a TECO servo motor that will fit the lathe tho
[02:11:19] <PetefromTn_> its a nema 34 750 watt motor 3.1 NM continuous at 2400RPM
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[02:11:56] <PetefromTn_> The good news is since it is 1-1 belt drive and the mounts are very simple I am not tied to any certain motor really.
[02:12:10] <PetefromTn_> Basically anything Nema 34 or smaller will work
[02:13:16] <PetefromTn_> I almost bought the DMM servos for the Cincinatti and they actually have a motor and driver setup that would run about $650.00 per axis for AC servos.
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[02:21:41] <XXCoder> cool
[02:21:45] <XXCoder> wish I had better income
[02:22:11] <PetefromTn_> LOL so do it.. This is always a stretch for me getting a machine running.
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[02:35:40] <cathode> hi.
[02:36:02] <cathode> i made progress on my shopbuilt bandsaw project tonight! https://dl.dropboxusercontent.com/u/88948814/Shop/Bandsaw/2014-10-28%2019.26.59.jpg
[02:37:32] <XXCoder> heavy metal heh
[02:38:00] <cathode> it's what was scrap yesterday at work when i went out to the shop to get something
[02:38:08] <cathode> er friday, i guess
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[02:38:40] <cathode> anyway, it's a bit overkill yeah. but i'm going to cut the horizontal flange down a bit i think
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[02:39:45] <cathode> my pillow blocks will "hang" underneath the angle... the large holes are for the shaft to pass through: https://dl.dropboxusercontent.com/u/88948814/Shop/Bandsaw/2014-10-28%2019.27.28.jpg
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[02:48:57] <cathode> XXCoder what are you up to?
[02:49:08] <XXCoder> working heh
[02:49:17] <cathode> :(
[02:49:19] <XXCoder> I finished my tap block internship project
[02:49:34] <XXCoder> it was interesting. first time I cut steel manually using cnc
[02:49:42] <cathode> heh
[02:49:47] <XXCoder> I didnt quite do it correctly so it was quite rough
[02:49:49] <cathode> manually using cnc?
[02:49:55] <XXCoder> yeah its big machine
[02:50:04] <cathode> you mean without working off a 3d CAD model first?
[02:50:53] <XXCoder> yeah I cant do it any way but manual.
[02:51:12] <XXCoder> no program
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[02:52:02] <cathode> ah
[02:52:33] <XXCoder> tap block isnt that complex though
[02:52:35] <cathode> so, i discovered (not surprising) that the cheap stepped bit i bought on amazon is junk
[02:52:42] <cathode> got pictures of it?
[02:52:50] <XXCoder> just certain block size then add bevel and 9 holes
[02:53:10] <XXCoder> I screwed up on holes camfers so it looks funky but otherwise nice
[02:53:39] <cathode> :/
[02:53:47] <XXCoder> before I sanded it (I didnt use facemill nicely) https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xaf1/v/t1.0-9/s720x720/10365754_10152504754423253_4476740286993063364_n.jpg?oh=44ff62a40671616279385299c2195408&oe=54F39FAB&__gda__=1424501086_286b7917bc824e9e7221c38fcfe262c3
[02:54:03] <XXCoder> after sanding and screw up https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/s720x720/10712792_10152504754428253_5610583568004425213_n.jpg?oh=277ca1eeadddd5ccf57b9ce8dc0a33ea&oe=54F2A4E3&__gda__=1424176666_1c0ba7530280053521a4a8c9b3f28fa4
[02:54:31] <cathode> looks like your chamfering bit was chattering a lot
[02:54:49] <XXCoder> yeah should have used single umm whats it called
[02:54:53] <XXCoder> flute
[02:55:15] <XXCoder> I can still do it but will make chamfer even larger
[02:55:22] <cathode> i just bought one of those. i had some 6-flute ones i got at .... harbor freight? they work fine when you're plunging straight into wood
[02:55:49] <XXCoder> I bought two 123 blocks for home use, but later found out I will make one evenually lol
[02:55:54] <cathode> but trying to countersink or chamfer an existing hole, the 6-flute ones jump all over
[02:57:06] <cathode> "if you want it done right, do it yourself", yes?
[02:57:11] <XXCoder> I used y flute I think
[02:57:13] <XXCoder> 6
[02:57:24] <XXCoder> I now know thats bad idea
[02:58:55] <cathode> http://www.hassay-savage.com/4242222/
[02:59:18] <XXCoder> get a quote??
[02:59:19] <XXCoder> jeez
[02:59:26] <XXCoder> if its quote I cant afford it
[02:59:34] <XXCoder> probably $300 or something
[03:00:12] <cathode> http://www.amazon.com/Magafor-48241270-Combination-Countersink-Chamfering/dp/B003EIKT24/ref=sr_1_1?s=industrial&ie=UTF8&qid=1414551552&sr=1-1
[03:00:27] <cathode> no idea if that one is any good or not
[03:00:38] <cathode> i actually have better luck on ebay than on amazon for "cheap stuff"
[03:00:50] <XXCoder> funny because it would work for all but last hole
[03:00:59] <XXCoder> its too small, last hole is .5 in
[03:01:12] <cathode> ah
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[03:01:30] <XXCoder> not planning to buy tool collection till later as needed
[03:01:33] <cathode> do you have a stepped bit? they do a good job of adding a little chamfer if you're really light on the application
[03:02:33] <cathode> i bought a set of 3 stepped bits at harbor freight for ... i think $9
[03:02:58] <cathode> they've drilled 50-100 holes each, some of that through steel and aluminum (with cutting oil used)... still very sharp
[03:03:21] <XXCoder> not bad
[03:03:58] <cathode> i have no CNC equipment in my shop (yet) as it's just a hobby-grade shop in my basement
[03:05:14] <XXCoder> I basically has tablesaw, drill press and parts of cnc heh
[03:05:15] <cathode> so i do my hole drilling with a floor-standing drill press. i just set the depth stop so that the stepped bit barely touches the next step while drilling, which deburs/chamfers the hole as i finish drilling it. with the depth stop, it's repeatable and requires no thought
[03:05:30] <cathode> heh, you can do a lot with just a table saw and drill press :)
[03:06:26] <XXCoder> yeah thats why I bought those twp
[03:07:28] <cathode> i have TS, DP, jointer, planer, three routers (one plunge, two fixed), nice bosch jigsaw, 7-1/4" circular saw, belt sander, pneumatic nailguns and staplers, a set of 18v Ridgid cordless drill/drivers and a plethora of hand tools... all packed into a 14x16 basement room
[03:07:57] <cathode> 7.5ft ceilings, which is nice, but still pretty small
[03:08:05] <ssi> hi
[03:08:08] <cathode> hey
[03:08:13] <XXCoder> hey
[03:08:38] <cathode> XXCoder - do you use your TS for wood cutting mostly? or also for like plexiglas and stuff?
[03:08:40] <ssi> what's shakin
[03:08:56] <XXCoder> wood, that is if I ever do it lol
[03:08:59] <skunkworks_> ssi: how is it going?
[03:09:06] <XXCoder> I have hard time getting up and doing things
[03:09:44] <skunkworks_> ssi: sorry to hear about the 'incident..'
[03:10:06] <cathode> what incident?
[03:10:53] <ssi> skunkworks_: it's going ok, and thanks :)
[03:11:20] <skunkworks_> that is good.
[03:11:26] <ssi> spent the day in a hell of dealing with contractors :P
[03:11:32] <cathode> :(
[03:11:34] <ssi> trying to line up a flatbed rental to move some machines
[03:13:27] <skunkworks_> are you going to re-build?
[03:13:46] <ssi> yeah, but I may not move back in
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[03:16:51] <skunkworks_> move closer to the hanger? or in the hanger?
[03:17:10] <XXCoder> tower of doom
[03:17:11] <ssi> in the hangar more or less :)
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[03:20:19] <zeeshan|2> yoo
[03:20:26] <zeeshan|2> I GOT A CARE package
[03:20:38] <zeeshan|2> rs485 conveter, 5v supply, interpolators
[03:20:38] <ssi> wat
[03:20:42] <ssi> lol
[03:20:48] <zeeshan|2> my drives are stuck in vancouver
[03:20:50] <zeeshan|2> @ customers
[03:20:51] <zeeshan|2> customs
[03:20:55] <zeeshan|2> :/
[03:20:57] <ssi> lame
[03:21:02] <ssi> my next set will be here tomorrow
[03:21:06] <ssi> speaking of care packages
[03:21:10] <ssi> friend of mine is mailing me MREs
[03:21:11] <ssi> hahah
[03:21:26] <zeeshan|2> MRE
[03:21:27] <zeeshan|2> ?
[03:21:34] <ssi> meal, ready to eat
[03:21:48] <zeeshan|2> haha
[03:22:02] <zeeshan|2> howd things go w/ adjuster
[03:22:23] <ssi> went fine
[03:22:28] <zeeshan|2> good
[03:22:34] <XXCoder> I just got bunch of soylent
[03:22:34] <zeeshan|2> ask em for pay cheque ASAP
[03:22:34] <ssi> er, not adjuster
[03:22:37] <XXCoder> fun
[03:22:37] <zeeshan|2> more CNC machines!
[03:22:39] <ssi> today was fire invstigator
[03:22:42] <zeeshan|2> oh
[03:23:38] <Connor> ssi: Basically make sure you didn't do it on purpose.
[03:24:15] <ssi> yeah of course
[03:24:30] <ssi> he asked a bunch of questions about the machine and how it was built, how it worked, etc
[03:24:42] <ssi> and we dug through the remains and found parts of it and I pointed out bits
[03:24:45] <ssi> and he was satisified
[03:24:46] <ssi> so it's cool
[03:26:51] <ssi> lol so the city building inspector hung "condemned" signs on the house a couple days ago
[03:26:58] <ssi> today, he showed up while I was there
[03:27:05] <ssi> and I was thinking "oh boy, this should be fun"
[03:27:17] <ssi> and he stopped by because he saw all my crap and thought it was cool
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[03:27:23] <zeeshan|2> lol
[03:27:23] <ssi> and said he had a horizontal mill he was looking to get rid of
[03:27:29] <ssi> and liked the 602
[03:27:35] <ssi> I told him I might want to trade the 602 for the mill
[03:27:51] <Connor> 602 ?
[03:27:55] <ssi> g0602
[03:28:20] <Connor> I didn't know you had one.
[03:28:29] <Connor> That's about the size I want.
[03:28:33] <ssi> yeah, had it for ages
[03:28:34] <zeeshan|2> ssi has like
[03:28:35] <ssi> kinda want to sell it
[03:28:37] <zeeshan|2> 25 cnc machines
[03:28:43] <ssi> yeah somehting like that
[03:28:45] <zeeshan|2> :)
[03:28:46] <ssi> :)
[03:28:54] <ssi> I found the melted remains of the little engraving machine I built
[03:28:57] <Connor> Guy around here has one up for $1500.00 used once.. can get one new for $1300.00
[03:29:09] <zeeshan|2> LOL connor
[03:29:11] <zeeshan|2> i love those guys
[03:29:18] <zeeshan|2> sellling their shit more than brand new
[03:29:33] <zeeshan|2> for fun i'd email a guy like that
[03:29:33] <Connor> On Craigs list..
[03:29:36] <zeeshan|2> "how about $100?"
[03:29:37] <os1r1s> Anyone have an opinion on the imservice sherline toolchanger (outside of cost)?
[03:29:40] <ssi> I want 2500 for mine, with leeson 3ph motor, vfd, ballscrews, spindle encoder, steppers, mounts, drives, computer, mesa gear
[03:29:40] <zeeshan|2> just to annoy them
[03:29:42] <Connor> I would offer him about half that.
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[03:29:54] <zeeshan|2> ssi if it works good
[03:29:57] <zeeshan|2> i dont see why you wont
[03:30:01] <Connor> ssi: His was unmodified.
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[03:30:14] <ssi> Connor: yea that's dumb
[03:30:43] <Connor> http://knoxville.craigslist.org/tls/4718599951.html
[03:31:02] <ssi> lol
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[03:33:32] <cathode> if that combination square is a Starrett, that's worth a bit
[03:33:42] <cathode> but only like $80-100
[03:34:35] <Connor> Doesn't matter. I don't have the $$$ for it.
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[03:53:38] <zeeshan|2> that doesnt look like a starrett square
[03:54:10] <zeeshan|2> thats a chinese import square
[03:54:18] <zeeshan|2> the body on the starrett is different
[03:54:25] <zeeshan|2> and the screws are also different for tighten it to the ruller
[03:55:14] <zeeshan|2> i need the angle attachment for my comb. square :[
[03:56:34] <cathode> mmmm
[03:56:41] <cathode> well, then it's overpriced still. :P
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[04:01:05] <cathode> grrrr. my mcmaster order won't be here until thursday
[04:01:19] <cathode> and it's only shipping from california... i'm in oregon.
[04:01:42] <cathode> i need my 7/16-18 bolts...
[04:01:51] <XXCoder> doh
[04:02:30] <cathode> i wanted to test fit the pillow blocks to ensure everything is aligned properly before i go further
[04:02:51] <cathode> they have tapped 7/16-18 holes in the bottom instead of bolt-through 'feet'
[04:03:18] <cathode> home depot doesnt even carry 7/16 bolts of any kind
[04:03:52] <XXCoder> http://hackaday.com/2010/06/21/100-cnc-mill/
[04:04:20] <cathode> heh
[04:04:22] <cathode> that's pretty neat
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[04:08:10] <XXCoder> yeah
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[04:25:57] <zeeshan|2> no home depot? :D
[04:26:06] <zeeshan|2> nm
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[04:27:36] <zeeshan|2> hm
[04:27:43] <zeeshan|2> maybe i can build a plasma cutter
[04:27:46] <zeeshan|2> er cnc plasma table
[04:27:56] <zeeshan|2> by utilizing cheapo steppers that are like 200oz-in
[04:28:01] <zeeshan|2> running probotix stepper drivers
[04:28:10] <zeeshan|2> and using 10 mm pitch acme screws
[04:28:22] <zeeshan|2> can i only need +/-0.020"
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[04:43:28] <WalterN> oh hey, cathode
[04:43:47] <WalterN> cathode: http://seattle.craigslist.org/sno/bfs/4727300726.html
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[04:47:57] <WalterN> pretty good deal I think
[04:50:03] <PetefromTn_andro> Evening folks
[04:54:46] <Connor> PetefromTn_andro: Evening?
[04:55:47] <PetefromTn_andro> Well what can I say to that hehe
[04:56:12] <Connor> How goes the cleaning ?
[04:56:21] <PetefromTn_andro> I've been scrubbing grease and chips off the lathe all day.
[04:57:10] <PetefromTn_andro> I did think to check the run out on the spindle after captainhindsight asked about it
[04:57:26] <Connor> and ?
[04:57:42] <Connor> and did you verify the bore diameter ?
[04:58:08] <PetefromTn_andro> I put my best brown and sharp dial test indicator in my mag base and stuck it up against the spindle bore.
[04:58:26] <PetefromTn_andro> It's a .0005 indicator
[04:58:48] <PetefromTn_andro> And the damn needle barely moved
[04:59:01] <Connor> nice.
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[04:59:33] <toastyde1th> interesting tidbit that doesn't matter to most people - there's no easy way to measure true spindle runout
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[04:59:52] <PetefromTn_andro> It has clean looking oil in the headstock sight window
[05:01:02] <PetefromTn_andro> There is no other way on this machine that's for sure I don't even have a Collette or Chuck or much of anything for it yet
[05:01:21] <toastyde1th> no no, I mean there's no way to one-shot measure it period
[05:01:32] <toastyde1th> not without graph paper and some time on your hands
[05:01:34] <PetefromTn_andro> But the bearings seem tight and smooth
[05:01:58] <PetefromTn_andro> I understand what you meant and I have heard that before
[05:02:06] <Connor> I'm kinda stuck on stuff right now.. Waiting for my wire duct and wire furrule to show up.
[05:02:18] <toastyde1th> (doesn't actually matter, just something that's interesting for machine checking)
[05:02:37] <Connor> Dang China vendor shipped them, and was returned because they couldn't ship 1meter long wire duct.
[05:02:47] <PetefromTn_andro> Aah
[05:03:29] <PetefromTn_andro> I gotta get some nice epoxy or industrial paint for this thing here soon
[05:03:40] <Connor> told'm what sizes I needed the duct and told em to cut it and ship it if possible.. we'll see.
[05:04:00] <PetefromTn_andro> The parts I already stripped already have some light surface rust lol
[05:04:13] <Connor> Really?
[05:04:22] <PetefromTn_andro> Yeah amazing
[05:04:24] <Connor> developed AFTER you stripped ?
[05:04:32] <PetefromTn_andro> Yup
[05:04:58] <PetefromTn_andro> No biggie I will be sanding it anyway before I shoot primer on
[05:05:03] <Connor> Must be something in the degreaser accelerating the oxidation.
[05:05:36] <PetefromTn_andro> No I did not use the degreaser on those parts
[05:05:45] <Connor> Oh. okay
[05:05:56] <PetefromTn_andro> It's funny
[05:06:13] <PetefromTn_andro> There is a bracket on the back of the apron
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[05:07:05] <Connor> For ?
[05:07:08] <PetefromTn_andro> It holds all four homes and limits as well as where the cable chain hooks up
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[05:07:39] <PetefromTn_andro> So you would think it would be thick and rigid
[05:07:55] <Connor> Is it not ?
[05:07:57] <PetefromTn_andro> But it's like les than an eighth inch thick
[05:08:13] <Connor> Wonder how much stress it has ?
[05:08:17] <PetefromTn_andro> I can flex it easily with my hands
[05:08:35] <PetefromTn_andro> It is L shaped
[05:09:14] <PetefromTn_andro> I thought they did a nice job on the homes and limits placement tho
[05:09:53] <Connor> Probably not that much of a stress point and they figure it wouldn't affect the accuracy of the homes.
[05:10:08] <PetefromTn_andro> The x has a home and limit and they contact a piece of metal that has a slot with a taper at both ends
[05:10:29] <PetefromTn_andro> The z has a limit and home
[05:10:36] <Connor> Was looking at some of those lathes with the tool turrets.. I'm thinking you could make one out of a rotary table..
[05:10:55] <Connor> Just not sure about the backlash of the table.
[05:10:58] <PetefromTn_andro> The limit is fixed at a point that will keep the z out of the headstock
[05:11:11] <Connor> That's nice.
[05:11:47] <PetefromTn_andro> The z limit near the other end is actually on a tapered ram mounted to the tailstock
[05:12:17] <Connor> I'm basically going to have to do a complete re-config on my since I'm upgrading to new screws and using mesa now.
[05:12:24] <PetefromTn_andro> So no matter where you put the tail stock you cannot crash into it with the apron
[05:12:46] <PetefromTn_andro> Yeah probably will.
[05:13:19] <PetefromTn_andro> The z home switch is mounted in a fixed position about a foot out from the headstock
[05:13:29] <PetefromTn_andro> Pretty cool actually
[05:14:05] <Connor> That's one thing I'm going to have to finish up.. mounting the homes / limits those are always the last thing to get added..
[05:14:08] <cathode> can anyone reccomend an inexpensive videocamera that is durable enough to record in a shop?
[05:14:09] <PetefromTn_andro> I have often wondered how you would set-up homes and limits on a cnc lathe
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[05:15:15] <PetefromTn_andro> I think it is funny you mentioned that rotab idea for the toolchanger I saw a couple video on YouTube with that
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[05:15:45] <Connor> Makes sense. Easy way to do it.
[05:15:58] <roycroft> cathode: i've been looking at gopro cameras for recording shop stuff
[05:16:11] <PetefromTn_andro> Yeah I talked to art about it. He has two rotabs with cnc
[05:16:12] <roycroft> they're not the greatest quality, but they're decent
[05:16:40] <roycroft> they're also waterproof, and they have heaps of mounts available
[05:16:47] <PetefromTn_andro> He did one with a dividing head
[05:17:08] <cathode> roycroft - ok
[05:17:16] <roycroft> ~$200 for a decent one
[05:17:18] <zeeshan|2> toastyde1th: still there?
[05:17:21] <cathode> i thought about that too but i was looking for a bit cheaper :P
[05:17:25] <roycroft> i don't know if that's what's in your budget or not
[05:17:25] <zeeshan|2> can you explain why you cant measure true spindle run out?
[05:17:26] <toastyde1th> zeeshan|2, yep
[05:17:32] <roycroft> and i don't have one and haven't used one
[05:17:34] <PetefromTn_andro> I might just try to get a manufactured one cheap used somehow
[05:17:42] <toastyde1th> 2 secs and i'll explain
[05:17:46] <zeeshan|2> :-)
[05:17:49] <cathode> there's some unbranded stuff from china sold on ebay in the $75 range, with similar specs to a gopro
[05:17:54] <roycroft> it's something i'm shopping for, though, and i'm leaning towards the gopro hero 3
[05:18:21] <roycroft> i'm sure there are plenty of other options
[05:18:32] <cathode> hmmm, $65... http://www.ebay.com/itm/Full-HD-1080P-Waterproof-Outdoor-Sport-Bike-Helmet-Car-Action-Camera-DVR-DV-Cam-/321389025963?pt=Camcorders_Professional_Video_Cameras&hash=item4ad4475aab
[05:20:03] <cathode> that thing is tiny enough it could be used (maybe) as a webcam attached to a machine
[05:20:18] <toastyde1th> zeeshan|2, the basic problem is that what you're measuring is some object that has nothing to do with the spindle bearing itself
[05:20:43] <toastyde1th> it just happens that through careful initial machining, it's kinda close to the actual spindle's axis of rotation
[05:20:52] <zeeshan|2> youre saying theres somting on top of the bearing inner race
[05:20:54] <zeeshan|2> that can throw error
[05:20:59] <zeeshan|2> *throw = add
[05:21:16] <toastyde1th> i'm saying that what one wants to measure is the hypothetical axis of rotation, which isn't even the inner bearing race
[05:21:29] <toastyde1th> it's a completely abstract line
[05:21:42] <toastyde1th> and it does move all over the place
[05:22:10] <zeeshan|2> that makes sense
[05:22:14] <zeeshan|2> this is why dynamic spindle runout
[05:22:16] <zeeshan|2> is different
[05:22:40] <cathode> i think i need to replace the bearings in my drill press...
[05:22:40] <toastyde1th> actually dynamic spindle runout is different again for different reasons
[05:22:44] <roycroft> it's a matter of what you want to deal with
[05:22:52] <zeeshan|2> im stupid youre right
[05:22:57] <roycroft> pay more for a name brand, and if there's a problem you can send it back to be repaired/replaced
[05:22:59] <zeeshan|2> its more to do with modes of vibration
[05:23:02] <toastyde1th> yep
[05:23:06] <toastyde1th> and there are two types
[05:23:09] <roycroft> or pay a lot less for a no-brand and just buy a new one if it breaks
[05:23:15] <toastyde1th> synchronous error, and asynchronous error
[05:23:39] <toastyde1th> synchronous error happens at some multiple of the frequenct of rotation, with the biggest errors being the fundamental and first harmonic
[05:24:02] <toastyde1th> with some other errors being linked to the harmonic based on how many bearing elements there are, etc
[05:24:24] <toastyde1th> also machine vibration tends to be synchronous
[05:24:34] <toastyde1th> (since the spindle's driving the oscillation)
[05:24:42] <toastyde1th> async is random
[05:25:09] <toastyde1th> on some machines, machine vibration looks asynchronous - it's not a hard and fast rule
[05:25:34] <zeeshan|2> thats the more annoying kind to deal with
[05:25:44] <zeeshan|2> the cnc grinders ive worked on
[05:25:46] <toastyde1th> synchronous errors are nice because they can be nulled out with the right equipment on ultraprecision lathes
[05:25:52] <toastyde1th> ya
[05:25:59] <zeeshan|2> were closed loop with the acclerometers monitoring vibrations
[05:26:07] <zeeshan|2> and compensated on the fly for em
[05:26:41] <cathode> balancing? https://www.youtube.com/watch?v=VKr5RZt6MQo
[05:26:42] <cathode> :)
[05:26:50] <zeeshan|2> http://www.marposs.com/backend/products/img_upload/img_big/0807171106170_products_0096.jpg
[05:26:53] <zeeshan|2> have you seen those gauges before?
[05:27:05] <toastyde1th> not a grinder guy, nope
[05:27:19] <zeeshan|2> they measure live as the tool is grinding
[05:27:24] <zeeshan|2> gets the part to within 2 um
[05:27:50] <toastyde1th> nice
[05:28:10] <zeeshan|2> i could not find out how they measure..
[05:28:12] <toastyde1th> deterministic grinding is still a bit rough
[05:28:29] <zeeshan|2> ive been told they send ultrasonic waves
[05:29:10] <zeeshan|2> https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcRf1xH43e5BcirNU6V7W0HnKq5XplrK_fJGVPBLjMsv8srlb4z4Eg
[05:29:12] <zeeshan|2> better image
[05:29:33] <toastyde1th> tbh that just looks like a lvdt or cap gauge
[05:29:43] <zeeshan|2> it doesnt make copntact
[05:29:44] <zeeshan|2> w/ the part
[05:29:53] <toastyde1th> cap gages don't
[05:30:13] <zeeshan|2> so similar concept to
[05:30:16] <toastyde1th> and if you're using them for relative measurements (high frequency feedback) they don't need to be calibrated, either
[05:30:18] <zeeshan|2> cap proximity sensor
[05:30:21] <toastyde1th> yep
[05:30:27] <zeeshan|2> i wonder why its got 2 of em
[05:30:41] <toastyde1th> it may be slaved to spindle rotation
[05:31:02] <toastyde1th> that's how you do an elementary true axis of rotation measurement
[05:31:19] <toastyde1th> you measure the same point on a part, 180 degrees out via spindle rotation
[05:31:38] <toastyde1th> if it's in the same place on both sides, then the spindle hasn't moved
[05:31:46] <zeeshan|2> btw
[05:31:51] <zeeshan|2> im looking at some old pics
[05:31:53] <zeeshan|2> it does make contact
[05:31:55] <zeeshan|2> im wrong.
[05:31:59] <zeeshan|2> so it must be a lvdt
[05:32:10] <zeeshan|2> toastyde1th: gotcha
[05:32:10] <toastyde1th> works either way, lvdt's dont have much hertz stress
[05:32:23] <zeeshan|2> hertzian stress?
[05:32:24] <zeeshan|2> contact?
[05:32:27] <toastyde1th> yep
[05:32:42] <toastyde1th> only a couple grams of force, i think it comes out to be like 19 millionths of an inch or so
[05:32:57] <toastyde1th> on most lvdts
[05:32:58] <zeeshan|2> haha
[05:33:14] <zeeshan|2> we moved away from lvdts in metal forming testing in the lab
[05:33:16] <zeeshan|2> its all camera based now
[05:33:28] <zeeshan|2> cause when we're doing say bulge testing
[05:33:29] <zeeshan|2> the thing explodes
[05:33:33] <zeeshan|2> lvdt gets owned
[05:33:37] <zeeshan|2> has to be recalibrated
[05:34:16] <toastyde1th> hahaha
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[05:35:00] <toastyde1th> i'm a bigger fan of cap gauges anyway
[05:35:09] <toastyde1th> the ones we had were .1 millionth of an inch resolution
[05:35:13] <zeeshan|2> jeez
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[05:35:51] <toastyde1th> was great because you could put a sharpie mark on the part
[05:36:03] <toastyde1th> and use it as a clocking mark because the edge would come by like a goddamn cliff
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[05:36:12] <zeeshan|2> haha
[05:36:16] <zeeshan|2> that is pretty damn cool
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[05:36:28] <zeeshan|2> that's stupid sensitive
[05:36:42] <toastyde1th> tons of fun
[05:36:46] <toastyde1th> absolutely stupid to use
[05:36:48] <toastyde1th> but tons of fun
[05:36:55] <zeeshan|2> precise stuff is always cool :)
[05:36:57] <toastyde1th> 2 thou total range
[05:37:00] <zeeshan|2> haha
[05:37:04] <zeeshan|2> well thats huge though
[05:37:07] <toastyde1th> yeah
[05:37:08] <zeeshan|2> for the precision its working in
[05:37:11] <toastyde1th> several orders of magnitude
[05:38:06] <cathode> what even needs that kind of precision?
[05:38:09] <toastyde1th> one of the biggest regrets is i almost got to work on the lodtm
[05:38:16] <cathode> manufacturing class 9 ball bearings i guess..
[05:38:19] <toastyde1th> hindsight, i'm an idiot
[05:38:24] <toastyde1th> cathode, optics
[05:38:37] <toastyde1th> all manufacturing at that sensitivity is optics
[05:38:37] <zeeshan|2> yea i think
[05:38:40] <zeeshan|2> optics is the most precise
[05:38:46] <zeeshan|2> industry
[05:38:50] <toastyde1th> and related, semiconductors
[05:38:56] <toastyde1th> because litho process etc
[05:38:57] <cathode> Ah gotcha
[05:39:04] <zeeshan|2> i remember watching a documentary on hubble's mirror
[05:39:07] <cathode> and you need precise optics to put in other machines
[05:39:29] <toastyde1th> there's no good way to make aspheric optics other than machining
[05:39:51] <toastyde1th> although now there are lapping machines that have dynamically deformable laps
[05:40:04] <cathode> heh
[05:40:06] <zeeshan|2> yes
[05:40:11] <zeeshan|2> i think mit invented those
[05:40:15] <toastyde1th> but those tend to be economical on large diameter optics
[05:40:19] <toastyde1th> not on small shit
[05:40:39] <toastyde1th> and if you plan on making cell phone cameras, you HAVE to have aspheric lenses
[05:40:52] <cathode> http://www.google.com/patents/US7967662
[05:41:11] <toastyde1th> yup
[05:42:06] <toastyde1th> although i guess you could do ion milling
[05:42:16] <toastyde1th> I think that's the current record holder for high accuracy finishing
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[05:44:59] <cathode> heh
[05:45:21] <cathode> i wonder how smooth crystals can be grown?
[05:45:33] <cathode> the exterior surfaces of them i mean
[05:46:19] <toastyde1th> no idea
[05:47:14] <cathode> hmm
[05:47:40] <cathode> it's 10:45 i'm trying to decide if i want to go downstairs and drill more holes or play videogames for a bit then go to bed
[05:47:42] <cathode> -___-
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[06:19:19] <WalterN> cathode: just get a webcam and cover it with plastic or something
[06:19:38] <WalterN> plastic foodwrap
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[07:01:13] <cathode> yea something like that
[07:01:27] <cathode> but a battery powered/cordless cam would be nice
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[07:58:41] <Deejay> moinsen
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[11:29:00] <Computer_Barf> http://www.baldor.com/support/Literature/Load.ashx/MN1902?ManNumber=MN1902
[11:29:22] <Computer_Barf> I am considering getting a baldor flexdrive to drive a ac servomotor
[11:29:39] <Computer_Barf> but i want to use linuxcnc
[11:30:00] <Computer_Barf> it seems to have digital ins for step and dir
[11:30:56] <Computer_Barf> but it also seems to have rs232/rs485 inputs which seem to use some sort of serial language
[11:31:42] <Computer_Barf> "FlexDriveII has fieldbus options including DeviceNet, Profibus-DP and CANopen. Onboard I/O is programmable and can be interfaced to an external PLC. "
[11:31:49] <archivist> linuxcnc can use step dir
[11:32:18] <archivist> does it also have pwm or 0-10v
[11:32:58] <Computer_Barf> accept a wide variety of input command signals to suit specific application needs, such as the industry standard +/-10V, pulse & direction, or electronic handwheel input, and it may be used for control of both rotary and linear servo motors.
[11:33:37] <Computer_Barf> ""
[11:33:41] <archivist> seems very usable
[11:34:39] <Computer_Barf> im just wondering if this whole mint thing they are talking about is something I could access through a serial connection
[11:34:52] <Computer_Barf> at the end of the pdf there are a ton of commands
[11:35:24] <Computer_Barf> "RS232 and RS485 serial channel, user selectable"
[11:35:44] <archivist> you may need to set it up via serial for the more sensible mode you want to run it in
[11:36:32] <Computer_Barf> you mean i might need to get into the serial first before using step dir?
[11:37:37] <archivist> I have not read that manual :)
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[11:45:14] <balestrino> any experience about linuxcnc on H97 chipset?
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[13:06:14] <pcw_home> H81 works fine not sure about H97
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[13:51:07] <cpresser> pcw_home: since pncconf is running on your machine, could you give me a hint on where it loads the pncconf python module from?
[13:51:33] <cpresser> i just updated master from the buildbot, and cant seem to find the required module anywhere in the debian package
[13:53:28] <cpresser> they seem to be missing in the debian package
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[14:09:28] <pcw_home> let me try
[14:10:19] <pcw_home> do you have a RIP setup?
[14:12:10] <cpresser> no. just the debian-package via apt-get
[14:12:36] <cpresser> it seems to be a issue with the debian package. since it does not include the required files
[14:12:54] <cpresser> they are present when i compile from git-master
[14:13:07] <pcw_home> Yeah thats harder for me to try here
[14:13:22] <cpresser> ill see if i can fix the debian package
[14:13:49] <cpresser> for now, ill try to copy the files manually, or use RIP for the wizard
[14:14:09] <pcw_home> looks like module are loaded from lib/python/pncconf
[14:16:28] <cpresser> yes, and this path (and contents) is not part of the debian package
[14:18:03] <cpresser> anyway, path-handling in pnccong is not well engineered. when i preload a python-lib-dir via environment variables, pncconf cant find the images. they are coded relative to that path
[14:19:57] <zeeshan|2> hi guys
[14:20:19] <zeeshan|2> is there anyway to compensate in linuxcnc for ball screw lead error if i have a ball screw lead error map.
[14:20:26] <zeeshan|2> . = ?
[14:20:35] <pcw_home> Yep
[14:21:05] <zeeshan|2> im getting wonky links from google when i search "ball screw mapping linuxcnc"
[14:21:06] <pcw_home> max 256 segments I think
[14:24:44] <_methods> http://i.imgur.com/wo3D8.jpg
[14:25:07] <zeeshan|2> delicious
[14:26:05] <pcw_home> http://linuxcnc.org/docs/html/config/ini_config.html#_axis_lt_num_gt_section_a_id_sub_axis_section_a
[14:27:54] <zeeshan|2> when i click that link
[14:27:57] <zeeshan|2> it takes me to the top of the ini file
[14:28:00] <pcw_home> (scroll down to comp file)
[14:28:07] <cradek> http://linuxcnc.org/docs/html/config/ini_config.html#sub:AXIS-section
[14:28:26] <zeeshan|2> thank you!
[14:28:33] <cradek> I think that + in the example is bogus
[14:28:52] <cradek> (it was stupid to support two formats of comp file)
[14:32:03] <zeeshan|2> to clarify this
[14:32:21] <zeeshan|2> the very first entry would be the 0.000 position, in comp mode 0
[14:32:27] <zeeshan|2> so itd be 0 0 0
[14:33:17] <zeeshan|2> next could be 1.000 1.01 0.99 , 2.000 2.000 1.999
[14:33:18] <zeeshan|2> etc?
[14:33:29] <zeeshan|2> does it interpolate between the values
[14:41:38] <zeeshan|2> pcw_home: lol
[14:41:46] <zeeshan|2> as i was writing the email door bell rang
[14:41:49] <zeeshan|2> "special delivery"
[14:48:01] <cpresser> pcw_home: the last issue I mentioned is a typo in one of the pyton modules. i just send a patch to the ML#
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[14:54:50] <tjtr33> pcw_home, is it possible to order 7i75 with vertical DB25 connectors ?
[14:54:51] <tjtr33> ( like on 7i80DB ). It might allow closer spacing on DIN rail.
[14:55:26] <pcw_home> Probably not since we wont have one in stock
[14:56:05] <tjtr33> can order without connector ? ;)
[14:56:49] <_methods> can you use a right angle adpater on the card?
[14:57:00] <_methods> http://www.dx.com/p/pci-e-right-angle-riser-card-55277?tc=USD&gclid=CNyPgMyP0sECFbNj7AodJXYAEA
[14:58:01] <_methods> i think they make riser cable too so you can mount teh card wherever you want
[14:58:13] <_methods> http://www.dx.com/p/pci-express-pci-e-1x-to-36-pin-riser-card-extender-ribbon-cable-for-1u-2u-155034#.VFEAgxb4ouI
[14:58:58] <tjtr33> uh, this is a DB25 connector, and yes an adapter could be sued if i wanted even more pin2pin connections, its not a riser card
[14:59:25] <tjtr33> and btw riser cards for pic/ppcie have been talked about here, they were not liked
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[15:00:14] <tjtr33> i thiught that putting the host connector in line with the DIN rail was ... un-handy
[15:01:14] <zeeshan|2> lol methods
[15:01:21] <zeeshan|2> ive never seen one of those angle riser cards
[15:01:23] <zeeshan|2> looks cool
[15:01:35] <_methods> yeah they work good especially in like a 1u
[15:02:14] <_methods> if you need to mount a card in a weird spot the wire extension ones are handy
[15:02:41] <_methods> but i can see a flat cable being bad for linuxcnc comm's
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[15:04:39] <zeeshan|2> noiseeeee
[15:05:13] <_methods> yeah i've never tried to use one for that purpose
[15:05:18] <CaptHindsight> PCIe was designed for it
[15:05:33] <tjtr33> huh? but mesa uses vertical db connectors on 7i80DB "( like on 7i80DB ). It might allow closer spacing on DIN rail."
[15:05:34] <_methods> so it should be fine then?
[15:05:38] <CaptHindsight> i use them all the time
[15:06:00] <_methods> cool
[15:06:31] <zeeshan|2> stuff looks sexy
[15:06:37] <zeeshan|2> now that i have it in front of me
[15:06:46] <zeeshan|2> i feel like i should order another set for the lathe
[15:06:46] <zeeshan|2> lol
[15:06:54] <zeeshan|2> cause it'll easily fit into the box
[15:07:44] <zeeshan|2> http://www.cnc4pc.com/Store/osc/product_info.php?cPath=25&products_id=129
[15:07:53] <zeeshan|2> is there a more compact pcb than this
[15:07:59] <zeeshan|2> that doesnt have the big ass ethernet connector
[15:08:58] <CaptHindsight> http://www.overclock.net/t/1427731/pci-express-extender-cables-benchmarked
[15:09:30] <CaptHindsight> Mesa sells extender cards and cables as well
[15:11:05] <zeeshan|2> http://www.google.ca/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http%3A%2F%2Fwww.hardwarebbq.com%2Focn-member-show4pro-shows-off-stunning-wall-mount-water-cooled-pc-rig-maxxplanck-v2%2F&ei=hQNRVP-tFo7-yQS9vILgCg&bvm=bv.78597519,d.aWw&psig=AFQjCNGWS7IDe077Se88kD_H7NxYvyXr_A&ust=1414681857183791
[15:11:15] <zeeshan|2> is that the 'wall mounted' computer hes referring to
[15:11:26] <tjtr33> yeah i read back, the bad marks were on single slot to dual extenders ( 2 cards and one slot ). andy also had good luck with flexible extenders
[15:12:12] <zeeshan|2> that looks so cool.
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[15:15:26] <zeeshan|2> you guys will know this better than i can google
[15:15:27] <zeeshan|2> http://www.cableforanydevice.com/images/belkin-molded-computer-ac-power-cable-12-ft-4-m-3-1.jpg
[15:15:35] <zeeshan|2> those types of computer power cables
[15:15:38] <zeeshan|2> can you buy them in 12 gauge?
[15:15:43] <zeeshan|2> the ones i see at the stores are all 18 awg
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[15:17:20] <zeeshan|2> they are impossible to find locally :/
[15:17:55] <_methods> 12 might be hard to find
[15:18:19] <_methods> is that in spec for that plug config at 12awg?
[15:18:27] <zeeshan|2> actually im relooking
[15:18:29] <zeeshan|2> its 10awg that i need
[15:18:54] <zeeshan|2> er. sec
[15:18:56] <_methods> i'm not sure if you're "supposed" to run that style plug with 10awg
[15:19:23] <CaptHindsight> you won't find a 10ga pc power cord
[15:19:36] <zeeshan|2> 2256 / 110
[15:19:52] <CaptHindsight> http://www.altex.com/PC-Power-Cord-9-10-14GA-POWER910-14-P154039.aspx 14ga
[15:19:53] <zeeshan|2> 20.5 A max current draw by the servo drive
[15:20:10] <CaptHindsight> http://www.parts-express.com/iec-6-ft-ac-power-cord-black-14-3--110-144
[15:20:11] <zeeshan|2> @ 110VAC , 1.25x safety factor
[15:20:16] <zeeshan|2> 25A
[15:21:15] <CaptHindsight> that type of plug and socket is not designed for that current
[15:21:26] <zeeshan|2> im not sure why theyre using it on this servo drive?
[15:21:40] <CaptHindsight> what power connector is on the servo drive?
[15:21:47] <zeeshan|2> try8ing to find a pic
[15:21:49] <zeeshan|2> but its being a nightmare
[15:22:52] <zeeshan|2> http://i.ebayimg.com/00/s/MTExM1gxNjAw/z/YcAAAOSwq7JULDpb/$_57.JPG
[15:23:05] <zeeshan|2> looks like a computer power plug to me
[15:24:23] <CaptHindsight> then your specs are wrong
[15:24:30] <zeeshan|2> huh
[15:24:41] <CaptHindsight> whats the link to that drive?
[15:24:48] <zeeshan|2> http://www.a-m-c.com/download/datasheet/be25a20ac.pdf
[15:24:54] <zeeshan|2> page 3
[15:24:59] <zeeshan|2> look @ max continuous output power
[15:25:01] <zeeshan|2> 2256 W
[15:25:54] <archivist> that connector handles kettles in the uk at nearly 3 kw 240v
[15:25:57] <zeeshan|2> "Standard IEC 60320-C14 AC Receptacle (male pins)"
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[15:26:33] <zeeshan|2> on the internet it says
[15:26:39] <zeeshan|2> a C14 connector is max current 10A..
[15:26:48] <_methods> there ya have it
[15:26:54] <archivist> although the real kettle connector has a groove so a standard IEC wont fit
[15:26:58] <zeeshan|2> then how can this drive be possibly
[15:27:01] <zeeshan|2> drawing 2256 W?
[15:27:04] <zeeshan|2> that makes no sense at all..
[15:27:26] <_methods> c15/c16
[15:27:27] <CaptHindsight> Maximum Power Dissipation at Continuous Current W 119
[15:27:48] <CaptHindsight> zeeshan|2: so how will you be cooling this unit?
[15:27:55] <zeeshan|2> fans
[15:28:31] <zeeshan|2> im mounting them vertically
[15:29:21] <archivist> so the bottom ones can heat the higher?
[15:29:37] <zeeshan|2> no
[15:29:45] <zeeshan|2> im talking about the drives themself
[15:29:52] <zeeshan|2> instead of mounting them flat, ill mount them standing up
[15:30:06] <zeeshan|2> better just to see ap ic
[15:30:20] <zeeshan|2> http://i.imgur.com/ci50ock.png
[15:30:34] <zeeshan|2> i might be moving the bottom box to the top
[15:30:58] <zeeshan|2> or putting them side by side
[15:31:06] <zeeshan|2> so that way i can just have fans on the top, intake on bottom
[15:31:57] <zeeshan|2> so can anyone make sense of that nonsense? :P
[15:32:02] <CaptHindsight> the data sheet doesn't show any heatsink attached like in your pic
[15:32:06] <zeeshan|2> 2256 w consumption
[15:32:16] <zeeshan|2> but 10A 110VAC plug?!?!
[15:32:26] <zeeshan|2> CaptHindsight: its a crappy pdf :)
[15:32:42] <archivist> the kettle version of the connector handles the current
[15:32:55] <zeeshan|2> http://i.ebayimg.com/00/s/MTE0NFgxNjAw/z/~icAAOSwq7JUAuF1/$_57.JPG
[15:33:00] <zeeshan|2> thats the pic of the exact one i bought
[15:33:05] <zeeshan|2> you can see the heat sink in the bac
[15:33:25] <zeeshan|2> you can even see on that
[15:33:30] <zeeshan|2> 30-125VAC input
[15:33:36] <zeeshan|2> 240VAC 16A slow burn
[15:33:55] <CaptHindsight> zeeshan|2: unfortunately you're making a few too many assumptions and working with poor docs
[15:34:07] <zeeshan|2> CaptHindsight: explain :-)
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[15:34:48] <archivist> zeeshan|2, they are up to 16A depending on class http://en.wikipedia.org/wiki/IEC_60320
[15:35:11] <zeeshan|2> archivist: it says c14 in the documentation
[15:35:12] <zeeshan|2> for this drive
[15:35:19] <zeeshan|2> which is 10A according to that wiki article
[15:36:52] <CaptHindsight> they don't mention how they arrived at Maximum Power Dissipation at Continuous Current W 119
[15:37:47] <zeeshan|2> FEA? :P
[15:37:51] <zeeshan|2> experiment? :P
[15:37:58] <archivist> I do not trust the WP article
[15:38:09] <CaptHindsight> if I knew which devices they are using for the outputs it would help, then I could just run the numbers for the cooling required
[15:39:06] <archivist> I assume they dont expect max continuous to ever occur anyway
[15:40:22] <archivist> we use 13A fuses for those connectors here, so that wp article has to be wrong
[15:41:16] <tjtr33> "Please improve it by verifying the claims made and adding inline citations"
[15:41:19] <_methods> some of the prongs onc the c13/14 are only rated to 6A
[15:41:20] <archivist> but kettles use the c15 version which will handle the temperature rise a bit better
[15:41:30] <_methods> they use thin connectors
[15:42:02] <CaptHindsight> the thermal management is based on what the maximum ambient temp will be and all the thermal resistance back to the internal die temp
[15:42:09] <archivist> I think the spring is stronger in the kettle version
[15:43:04] <zeeshan|2> <- just emailed the manufacturer
[15:43:10] <archivist> but you will never reach full load continuously unless being silly
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[15:44:28] <zeeshan|2> According to the BE25A20AC Servo drive documentation, Max. continuous power is 2256W and the AC input is 120VAC. I = P/V = 2256/120 = 18.8A. Multiplying a safety factor of 1.25, the wire size rating should be 23.5A. According to this, I would require 10AWG wire. I looked at the data spec sheet and it says "Standard IEC 60320-C14 AC Receptacle (male pins)" for the AC input connector. Looking up thi
[15:44:38] <zeeshan|2> s spec, the C14 connector is only rated for 10A. 10A*120VAC = 1200W which is no where close to the 2256W max continuous power number. Could you please explain why there is such a big discrepancy and also what size cable I should be using?
[15:44:43] <zeeshan|2> fair enough question?
[15:45:23] <CaptHindsight> the next question should be clarification of the thermal specs
[15:45:32] <zeeshan|2> whats so confusing about it?
[15:45:52] <zeeshan|2> its saying it disspiates 120W when it's under full strain
[15:46:02] <zeeshan|2> thats as much as an old school light bulb
[15:46:09] <CaptHindsight> it's like their power specs, not enough information
[15:46:10] <zeeshan|2> easy enough to deal with :P
[15:46:29] <archivist> it is all specmanship, they get away with standard duty parts rather than continuous duty
[15:46:56] <zeeshan|2> theres no way that c14 connector would blow up even drawing 30Amps
[15:47:05] <zeeshan|2> the terminals are thick and big enough
[15:47:07] <zeeshan|2> it might run out
[15:47:07] <skunkworks> zeeshan|2, the drives are usually rated peak - continuous is usually Amps/2
[15:47:09] <zeeshan|2> but it wont set on fire
[15:47:09] <CaptHindsight> what does dissipate 120w mean?
[15:47:24] <CaptHindsight> it's a meaningless quantity
[15:47:24] <zeeshan|2> CaptHindsight: it means if you'ree in a closed system with the drive
[15:47:27] <archivist> internal heat of the drive
[15:47:32] <zeeshan|2> you'll notice 120W of heat generation.
[15:47:33] <skunkworks> so 25a peak 14amp continous
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[15:47:49] <CaptHindsight> no, thats not what it means
[15:48:37] <skunkworks> hmm - didn't really read. Never mind :)
[15:48:43] <zeeshan|2> skunkworks: hehe
[15:48:44] <zeeshan|2> :)
[15:49:07] <zeeshan|2> CaptHindsight: i am confused.
[15:49:12] <zeeshan|2> i think of it like a lightbulb
[15:49:19] <zeeshan|2> 100W lightbulb maybe uses 5W to generate photons
[15:49:26] <zeeshan|2> the rest of the 95W is heat
[15:49:53] <zeeshan|2> i'm thinking its the same way for this drive. when it's drawing 2256 W continuous, 119W of that is waste heat
[15:50:03] <zeeshan|2> which needs to be dissipated from the chamber that it's in
[15:50:47] <CaptHindsight> that's not it at all
[15:50:54] <zeeshan|2> why?
[15:52:06] <Rab> zeeshan|2, that seems like astonishing efficiency.
[15:52:15] <zeeshan|2> haha
[15:52:16] <zeeshan|2> :D
[15:52:17] <CaptHindsight> I'm trying to find a good article for you. Wakefield used to have a great overview
[15:52:29] <zeeshan|2> hey i fully admit
[15:52:34] <zeeshan|2> im not an electronics expert :P
[15:52:40] <archivist> depends how good the mosfets are
[15:52:56] <zeeshan|2> rab 120W of heat generated is unreasonable?
[15:52:58] <pcw_home> Drives are very efficient
[15:53:11] <zeeshan|2> i thought that weas the whole point of modern electronics
[15:53:18] <zeeshan|2> more efficient, less waste heat
[15:53:20] <zeeshan|2> smaller package
[15:53:22] <pcw_home> 120 probably means IGBTs
[15:53:47] <pcw_home> MOSFETs are more efficent but mainly for lower voltages
[15:54:01] <Rab> zeeshan|2, ~95% efficient. I don't know if it's reasonable or not, just impressive.
[15:54:06] <pcw_home> (well SIC Mosfets are changing that)
[15:54:23] <zeeshan|2> rab arent SMPS 99% efficient? :P
[15:54:29] <pcw_home> Yes that reasonable for a motor drive
[15:54:31] <zeeshan|2> like the meanwells
[15:54:33] <archivist> they vary
[15:54:34] <Rab> zeeshan|2, ha ha ha, no.
[15:55:34] <pcw_home> maybe high 90s (99% is very unlikely for a power supply)
[15:55:35] <zeeshan|2> haha
[15:55:38] <zeeshan|2> its 87% efficiency
[15:55:43] <zeeshan|2> for the 24V 10A
[15:56:07] <zeeshan|2> seems like they get more efficient for higher voltages
[15:56:09] <Rab> The 24V 10A I just looked up is 89% efficient, better choose that one. ;)
[15:56:41] <pcw_home> effiiciency costs money (and space)
[15:56:55] <PetefromTn_> Thank god for simple green LOL
[15:56:56] <zeeshan|2> high efficiency --> less cooling needs?
[15:56:56] <Rab> Oh, it's 3-phase 340-550VAC input.
[15:57:07] <Rab> zeeshan|2, indeed.
[15:58:02] <zeeshan|2> outside a professors office
[15:58:11] <zeeshan|2> there was a box of about 50 computer power cables
[15:58:15] <zeeshan|2> 6 feet each
[15:58:25] <zeeshan|2> "take a couple home for free"
[15:58:30] <zeeshan|2> i was so excited till i read 18awg :[
[15:58:48] <_methods> man i use the shit out of those things
[15:58:51] <zeeshan|2> i still took some, cause they were FREE!
[15:58:53] <_methods> take as many as you can
[15:59:03] <_methods> great for projects
[15:59:16] <skunkworks> we threw a bunch out.. and we still have boxes of them.
[15:59:22] <_methods> useing old server power supplies for whatever
[15:59:43] <zeeshan|2> im suprised the copper thieves didnt rob em
[15:59:55] <skunkworks> self replicating..
[16:00:02] <zeeshan|2> they see free
[16:00:07] <zeeshan|2> and Bam its gone
[16:00:28] <zeeshan|2> they see 1000 foot cat 5 cable spool
[16:00:29] <zeeshan|2> BOOM gone
[16:00:42] <zeeshan|2> i literally had it sitting outside for 45 min at my dads office
[16:00:49] <zeeshan|2> when wiring the security cameras
[16:00:49] <zeeshan|2> haha
[16:00:58] <CaptHindsight> zeeshan|2: I'm looking for a good doc for you. You can start by taking the max watts the die will carry then start adding up all the thermal resistances between the die and the air outside the enclosure
[16:01:14] <zeeshan|2> CaptHindsight: screw t hat
[16:01:19] <zeeshan|2> ill put em in a box
[16:01:22] <zeeshan|2> and measure temperature!
[16:01:31] <zeeshan|2> less work :-)
[16:01:42] <zeeshan|2> i'm kidding, i still would like to see the article
[16:01:54] <zeeshan|2> i gtg back to studying. ill check it later in the logs
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[16:04:25] * JT-Shop got a new noodle maker http://gnipsel.com/images/Stihl%20MS-291/Sthil%20MS-291%2001.jpg
[16:08:30] <CaptHindsight> zeeshan|2: this sort of covers it (old powerPC thermal doc) http://smartdata.usbid.com/datasheets/usbid/2000/2000-q2/an007.pdf
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[16:42:41] <pcw_home> Hmm, our local feedstore has a geep
[16:43:02] <pcw_home> fairly rare
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[17:26:36] <tjtr33> geeps & noodles, i had to google em both
[17:27:19] <pcw_home> a geep is also a goat/sheep hybrid
[17:27:45] <pcw_home> (which is what our local feed store has)
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[17:41:02] <_methods> ah wow how long has kurt had those dovelock vises out?
[17:41:42] <_methods> http://www.kurtworkholding.com/master-english-p-3241-l-en.html
[17:41:45] <_methods> pretty spiffy
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[17:52:33] <PetefromTn_> That is cool. Wonder if that will fit my D688... my jaws have the slot for the work stops and you can add the mitee bite stuff on it but those are pretty sweet.
[17:55:58] <_methods> double your pleasure on the jaws
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[17:58:48] <_methods> damn brilliant idea though
[17:59:59] <_methods> man that would make swappin jaws so easy too
[18:00:07] <_methods> no more undoin the bolts in the jaws
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[18:00:18] <_methods> just loosen those dovetail slides pull the jaws out
[18:00:24] <_methods> slap new ones in
[18:00:46] <_methods> damn i wish i had thought of that one
[18:02:58] <Connor> Are those machinable ?
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[18:06:30] <Connor> I wonder how hard it would be to make those for a 5" vise..
[18:08:47] <Tecan> http://www.xup.to/dl,86382019/finishedDarkTheme-andCodeblocks_theme.tar/ you gotta find your own icons in this one
[18:09:03] <Connor> Tecan: huh ?
[18:09:18] <Tecan> its for gnome2 or mate
[18:09:34] <Tecan> not telling you just saying
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[18:12:54] <Tecan> http://i.imgur.com/t9QaXbo.png
[18:17:51] <_methods> the jaws that go in them are machinable
[18:18:00] <_methods> those are just the jaw holders
[18:20:25] <pcw_home> email from Buy.Now@.MISSING-HOST-NAME must be important
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[18:25:11] <roycroft> that master jaw system seems kind of nice in a way
[18:25:15] <roycroft> and not too expensive
[18:25:45] <roycroft> but if you need to mill some custom soft jaws for a one-off project, having to make dovetails for them would cost a lot of extra time
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[18:26:50] <PetefromTn_> I think they are assuming you just buy the jaws from them in different sizes for shops that don't have time to mess with making them.
[18:27:16] <PetefromTn_> But yeah you are right it would be more time consuming than the little program I wrote to machine another set of sacrificial jaws for my Kurt
[18:28:36] <roycroft> if they're cheap that's fine
[18:28:48] <roycroft> but two little strips of aluminium are pretty darn cheap
[18:28:58] <PetefromTn_> agreed
[18:29:30] <_methods> yeah man just set up a mill to mill alum bar stock 3' lengths with dovetail
[18:29:39] <_methods> then you cut them down whenever you need some jawws
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[18:29:47] <_methods> or just buy them lol
[18:30:00] <_methods> like chick jaws
[18:30:10] <roycroft> i guess i'm failing to see the benefit of the dovetails
[18:30:27] <_methods> quick changover
[18:30:29] <PetefromTn_> the only real benefit is quick changeover
[18:30:31] <_methods> use both sides of jaw
[18:30:32] <PetefromTn_> LOL
[18:30:34] <_methods> and repeatable
[18:30:44] <archivist> to lock you into buying the ready made ones
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[18:30:55] <PetefromTn_> but it also looks like you will loose quite a bit of vise area too
[18:31:06] <_methods> yeah the thickness of the master jaws
[18:31:30] <roycroft> i'm not trashing the product
[18:31:40] <roycroft> just trying to put it in perspective
[18:31:44] <PetefromTn_> They already sell a TON of different custom and sacrificial jaws for the KURT vises. Pretty standard really
[18:31:45] <_methods> yeah for the hobbyist
[18:31:47] <_methods> no real reason
[18:32:03] <_methods> but for production or repeat jobs
[18:32:07] <_methods> perfect
[18:32:18] <PetefromTn_> I would like to get a set of those mitee bite jaws with hold teeth so I have less flashing to machine on the second side of the parts I make
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[18:32:47] <_methods> yeah
[18:32:58] <PetefromTn_> apparently they hold like .060 or less material like a crocodile...
[18:33:10] <_methods> yeah they do
[18:33:30] <_methods> i got some to try out
[18:33:47] <PetefromTn_> are they real expensive? I have not checked..
[18:33:49] <_methods> they worked great
[18:34:30] <PetefromTn_> The shop I had worked in before had a bunch of them setup on custom fixtures for products that customers came in for on a consistent basis.
[18:34:43] <PetefromTn_> They seemed to work quite well but I never got to use them.
[18:35:48] <PetefromTn_> Well just a little more scrubbing on this new lathe and it will be all cleaned up.
[18:36:11] <PetefromTn_> I have gone thru a half dozen scrub pads and god knows how many rags tho LOL
[18:37:00] <PetefromTn_> Once I get it all sparklin' I will start the masking and shoot some fresh paint on the appropriate bits.
[18:37:23] <PetefromTn_> Then I can start piecing it together into a nice CNC retrofit.
[18:37:55] <PetefromTn_> It's funny the belt drive area cabinet is kind of a cream color white, the topside is a very light gray and the bottom side is darker gray.
[18:38:10] <PetefromTn_> It's like they couldn't make up their minds LOL
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[18:39:29] <jdh> paint it bright orange.
[18:39:40] <PetefromTn_> Dear God no..
[18:39:54] <PetefromTn_> maybe RED or BLUE but NEVER ORANGE!!!
[18:40:02] <jdh> like... Vol Orange
[18:40:18] <PetefromTn_> I am actually thinking I quite like the cream white color inside there.
[18:40:38] <PetefromTn_> Plus I would not have to paint the inside of any of the cabinets just everything outside if I used that color
[18:40:51] <PetefromTn_> AND it would match my Cincinatti kinda which is also a cream color
[18:40:57] <PetefromTn_> light beige sorta
[18:41:25] <PetefromTn_> I refinished my old RF45 in a color like that and I quite liked it.
[18:41:29] <jdh> orange woudl be good for the Cincinatti too.
[18:41:37] <PetefromTn_> SHows dirt easy tho..
[18:41:42] <jdh> Bengal orange and black.
[18:41:56] <PetefromTn_> Purple with pink Polka dots?
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[18:44:53] <JT-Shop> PetefromTn_, see my noodle maker?
[18:45:06] <PetefromTn_> no what is a noodle maker?
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[18:45:20] <JT-Shop> http://gnipsel.com/images/Stihl%20MS-291/Sthil%20MS-291%2001.jpg
[18:45:50] <PetefromTn_> Bigass sthil chainsaw?
[18:46:03] <PetefromTn_> It sure is pretty tho.
[18:46:15] <tjtr33> the chips come out like noodles, long, stringy
[18:46:28] <PetefromTn_> Did you just buy it or did you refinish it or something>
[18:46:36] <JT-Shop> medium large 3.75hp
[18:46:44] <PetefromTn_> nice
[18:46:46] <JT-Shop> new
[18:46:50] <PetefromTn_> Be careful with that thing..
[18:46:55] <PetefromTn_> Damn things are dangerous LOL
[18:47:21] <JT-Shop> tjtr33, when you cut with the grain that is noodling as the wood that comes out looks like noodles
[18:47:24] <PetefromTn_> I used to have a nice older one but it died and I could not fix it.
[18:47:35] <JT-Shop> you get chips when you cut across the grain
[18:47:39] <tjtr33> yah watched a video before i saw that
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[18:48:02] <JT-Shop> a sharp powerful saw is safer than a dull worn out saw
[18:48:09] <PetefromTn_> I like watching those badass dirtbike engine'd ones getting run.
[18:48:33] <JT-Shop> the racing ones?
[18:48:36] <PetefromTn_> the ones with the HUGE expansion chamber exhausts that sound like Grand Prix bikes hehe
[18:48:39] <PetefromTn_> yeah
[18:48:49] <PetefromTn_> just nutz
[18:48:52] <tjtr33> in the 60's we put husqys on go karts, duals w live axles
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[18:49:56] <PetefromTn_> thats what mine was actually a Husquavarna.. Loved it until it died..
[18:50:05] <PetefromTn_> BRB
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[19:05:25] <PetefromTn_> https://www.youtube.com/watch?v=jTu6S_2stRA Happy Halloween hehe
[19:05:51] <_methods> hahah
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[19:06:39] <_methods> how the hell did they do the height control on that
[19:07:10] <PetefromTn_> looks like a 3d toolpath
[19:07:22] <PetefromTn_> just probably guessed at the curvature
[19:07:45] <PetefromTn_> I would think they could have probably run ten times as fast and still got the same result.
[19:10:48] <PetefromTn_> https://www.youtube.com/watch?v=e6dJaAcF7M0 The pumpkin is kinda boring but check out that homebuilt CNC rig hehe
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[19:12:47] <_methods> wow
[19:12:55] <_methods> well at least it's not the pipe machine lol
[19:12:58] <_methods> pretty close
[19:13:24] <PetefromTn_> yeah I know right.
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[19:14:25] <lair82> Hey Guys, anyone know what "Bug: call stack underrun" would indicate when it shows up as a fault?
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[19:15:36] <_methods> were you running a path when that heppened?
[19:16:15] <tjtr33> need context
[19:16:41] <_methods> weren't you doing the foam cutter thing?
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[19:22:40] <Tom_itx> JT-Shop, i've got it's little brother
[19:22:55] <Tom_itx> 10" iirc for taking up the tree
[19:23:53] <Tom_itx> and it's long skinny brother on a pole
[19:24:21] <Tom_itx> and an old mac which is probably older than you and i
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[19:24:31] <Tom_itx> with a 24" bar
[19:25:28] <JT-Shop> I
[19:25:44] <JT-Shop> 've got an 021 with a 14" bar that I've used for years
[19:26:00] <Tom_itx> got tired of taking the chains in for sharpening too so i got a grinder for that
[19:26:21] <Tom_itx> i like the little one because the handle is in the middle... very well balanced for tree climbing
[19:26:29] <Tom_itx> doesn't wear ya out near as quick
[19:26:44] <Tom_itx> top handle
[19:26:45] * JT-Shop doesn't climb trees any more... I bring them down to me
[19:26:51] <Tom_itx> me either
[19:26:55] <Tom_itx> not much anyway
[19:27:03] <Tom_itx> still got all the stuff though
[19:27:22] <Tom_itx> stihl are hard to beat though
[19:29:38] <JT-Shop> yea, I got the 021 in '97 and cut some huge trees down to build my house
[19:30:11] <Tom_itx> i got a spare bar for the old mac for trunks
[19:30:15] <Tom_itx> save it just for that
[19:30:44] <Tom_itx> it may be the 24", i don't recall
[19:30:52] <Tom_itx> i think i could get a 28 for it but didn't
[19:30:55] <JT-Shop> nice, that's big one
[19:31:15] <JT-Shop> the MS-291 is 20" max
[19:31:17] <Tom_itx> i did cut one down it wouldn't go halfway through though
[19:31:46] <Tom_itx> it's a workhorse
[19:32:01] <Tom_itx> i think i gave like $50 for it 10 yrs ago used
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[19:32:26] <JT-Shop> whew that paint stinks... I gotta get out of here for a while
[19:33:47] <Tom_itx> i kept 3-4 chains for each one so i could swap em out on a job and fix em later
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[19:34:50] <Tom_itx> that one i couldn't cut through... i found some square nails about 6" inside the tree completely hidden
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[20:40:20] <Connor> pcw Did I read correctly that the ground on used for the Field I/O is isolated from the ground for the encoders / step and dir ?
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[22:10:46] <Deejay> gn8
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[22:12:38] <PCW> Connor: yes field I/O is full isolated from PC
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[22:22:36] <ssi> hi
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[22:47:22] <CaptHindsight> http://3dprintingindustry.com/2014/10/29/hewlett-packard-emerges-witness-birth-3d-printing-behemoth/
[22:47:53] <CaptHindsight> they are just using inkjet to print a UV cured binder onto various powders
[22:48:42] <cpresser> okay.. i just tried kernel 3.14 from wheezy-backports. now i get a (Permission Denied) error when loading hm2_pci. any hints?
[22:48:44] <CaptHindsight> http://www.3ders.org/articles/20141029-hp-wants-to-rewrite-the-rules-of-3d-printing-with-new-multi-jet-fusion-tech.html
[22:49:09] <CaptHindsight> cpresser: are you still root?
[22:49:18] <cpresser> nope, as user
[22:50:38] <CaptHindsight> cpresser: how would that kernel work anyway? it's not preempt_rt or RTAI
[22:50:56] <cpresser> "3.14-0.bpo.2-rt-amd64 #1 SMP PREEMPT RT Debian 3.14.15-2~bpo70+1"
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[22:52:17] <CaptHindsight> cpresser: I'd ask in the dev channel. I don't know the ins and outs of Debian
[22:55:21] <cpresser> CaptHindsight: whats the channels name?
[22:55:38] <CaptHindsight> #linuxcnc-devel
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[23:00:22] <andypugh> Would it be considered wrong-headed to MDI a complete program line-by line from Python code?
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[23:10:27] <Tom_itx> andypugh how many hundreds of lines of code is it?
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[23:11:11] <andypugh> Not many, just a loop of feeds at a sequence of depths
[23:11:42] <Tom_itx> we'd generally MDI lathe parts since they were so simple
[23:11:46] <Tom_itx> then save em
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[23:21:38] <andypugh> I make most thing on lathes with my fixed cycles. As there is a tab for eacy type of op, quite often I only need to switch tabs and press “go” again to make complete parts.
[23:22:46] <andypugh> I need to type 8 numbers and press “run” 4 times to make a CAT30 stub arbour, as an example (3 ODs and a taper)
[23:24:00] <andypugh> Things have to be pretty complicated for me to bother with G-code, even for batches of a dozen. An example here (I made 15) https://www.youtube.com/watch?v=nIYMfyf4jDI&list=UUexvgsGz_QFvOublovDYoTQ
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