#linuxcnc | Logs for 2012-08-29

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[00:00:27] <skorket> 1-2 mil runout seems pretty good...
[00:01:04] <archivist> 10 thou tracks may come out about 6-8 by the time you add tool error too
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[00:01:51] <archivist> depends on the rest of your machine too
[00:03:08] <skorket> yep. That's one of the reasons why I don't want to get an expensive spindle to begin with, just something so I can push the limits of my CNC
[00:05:18] <archivist> you can get er collet holders with parallel shafts and make your own spindle
[00:05:36] <archivist> even cheaper just a bit more work
[00:06:33] <skorket> link?
[00:07:17] <jdh> any idea how a 4 wire DC spindle would be wired?
[00:07:31] <archivist> ebay item 160846106231 is one
[00:08:33] <archivist> skorket, better one probably as easier bearing fit 110466080531
[00:08:57] <PCW_> Big old spindle with a field coil?
[00:09:29] <archivist> series(fast) or parallel
[00:09:31] <jdh> it is big and older. Guess that might explain the other two pins. There are 2 larger, 2 smaller pins on the plug
[00:10:07] <archivist> or parallel with a series resistance on the field
[00:10:35] <jdh> the power supply got thrown out before I heard about it.
[00:10:38] <skorket> archivist, sorry, I'm new to this whole thing...this is just the shaft where you attach one end to the motor and the bit to the other? How do you attach the motor to this? How do you ensure precision?
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[00:11:12] <jdh> bearings, bearing mounts, spindle mounts, motor mounts
[00:11:20] <archivist> skorket, you make bearing mounts and belt drive is one way
[00:11:55] <archivist> or some more work http://www.dieselrc.com/projects/cncspindle/
[00:13:05] <archivist> another version simpler http://www.raynerd.co.uk/?p=1562
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[00:15:42] <skorket> so, basically, attach the motor on one end, encase bearings in a housing, put the collet holder inside the bearings encased in the housing and you have a spindle? The idea being the bearings and housing stabalize the collet holder?
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[00:17:59] <archivist> something like that here is another http://www.cnconabudget.com/
[00:18:44] <archivist> that one is selling his but you can see where the collet holder is placed
[00:22:16] <skorket> Yeah, I think I see, thanks. Seems like after getting the motor, the controller, the bearings and the housing I might save on a bit of the price and might get good accuracy but for the time and expense I'm not sure it's worth it right now.
[00:22:53] <archivist> as always its a choice :)
[00:25:06] <archivist> but one has more control over the bearings and their mounting and also you remove the collet chuck mounting on the motor shaft error
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[01:20:07] <WillenCMD> Hey everyone
[01:20:31] <WillenCMD> just wondering if anyone was heading to imts?
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[01:54:33] <WillenCMD> where is everyone tonight?
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[02:09:00] <r00t4rd3d> Final Pass Stepover and Clearance Pass Stepover
[02:09:12] <r00t4rd3d> anyone?
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[02:35:03] <WillenCMD> what about it?
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[03:00:39] <bill1123> anyone here use 3d studiomax?
[03:00:50] <bill1123> trying to figure out how to add color to renderings
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[03:30:21] <r00t4rd3d> Materials
[03:31:00] <WillenCMD> ?
[03:31:07] <r00t4rd3d> http://www.youtube.com/watch?v=5N0TGS9w05s
[03:31:13] <r00t4rd3d> for bill1123
[03:32:03] <bill1123> thanks
[03:32:07] <bill1123> found this one too: http://www.mobilefish.com/tutorials/3dsmax/3dsmax_quickguide_teapot_color_texture.html
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[05:30:25] <tjb1> WillenCMD: Hi!
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[06:53:20] <DJ9DJ> moin
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[10:23:12] <cncbasher_> JT ?
[10:24:06] <jthornton> si
[10:24:16] <cncbasher_> hi
[10:24:25] <jthornton> morning
[10:24:38] <cncbasher_> i'll let you know on the tb6560 stuff
[10:24:49] <jthornton> ok
[10:25:07] <cncbasher_> i notice if i go to replace the tar file i dont get the option although i can add a jpg
[10:26:01] <cncbasher_> thinking this thread is going to get big . and trying to keep the tar files up to date , perhaps may be better in the wiki , what you think
[10:26:05] <jthornton> the forum software is a bit odd
[10:26:25] <jthornton> you could link to a wiki page
[10:26:29] <r00t4rd3d> if odd means garbage, sure.
[10:26:29] <jthornton> from the thread
[10:26:54] <cncbasher_> although must admit wiki editing it not my fort'e
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[10:27:36] <jthornton> I can create a page for you if you like
[10:27:52] <cncbasher_> theirs a few variations of boards , so i envisage probably 3 or 4 seperate configs in the end
[10:28:17] <cncbasher_> would you be so kind to start it off , and i'll update it from then
[10:28:23] <jthornton> just the pinout is different?
[10:28:27] <cncbasher_> yes
[10:29:10] <cncbasher_> i'm looking at a script to format the pins at a later date and add to stepconfig to produce it
[10:30:03] <cncbasher_> but when you have new people not only to linux and linuxcnc , theirs an uphill struggle lol
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[10:30:28] <archivist> specially when they dont like reading :)
[10:30:42] <cncbasher_> however these boards do seem popular due to price , so an idiots guide may be a way to help them
[10:31:15] <cncbasher_> so long as they dont send the boards to me to repair them ...
[10:31:33] <archivist> specialy being careful with the psu and motor connections
[10:31:53] <cncbasher_> yea as it goes bang !
[10:31:58] <archivist> seen too many stories of the smoke getting out :)
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[10:32:26] <cncbasher_> should be supplied with a plastic carrier bag .. so u can carry to the waste bin
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[10:33:10] <r00t4rd3d> what u doing with the tb6560?
[10:33:27] <cncbasher_> as little as possible ...
[10:33:34] <archivist> I do nothing, I avoid
[10:33:47] <r00t4rd3d> i like mine
[10:33:48] <cncbasher_> they carry the plague
[10:34:12] <archivist> but plenty start with cheap as possible which means a board based on that sh..
[10:36:13] <jdh> the tb6560 isn't so bad, just the crap implementation
[10:37:36] <cncbasher_> yea i agree , and the documentation translation dont help
[10:39:08] <archivist> users unplugging motors while powered accounts for a portion of smoke escape
[10:40:14] <jdh> same for many other drivers though
[10:41:22] <archivist> depends on protection added to the driver
[10:42:01] <jthornton_> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?TB6560
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[10:42:26] <cncbasher_> thanks john
[10:42:28] <jdh> sure, but that just adds to the price. The price is the only real selling point.
[10:42:33] <jthornton> np
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[10:55:34] <cncbasher_> JT should i direct the wiki to the forum post for comments ?
[10:55:50] <jthornton_> sure
[10:56:00] <cncbasher_> rather than obscure the wiki with comments etc
[10:56:08] <jthornton_> otherwise no one will notice
[10:57:53] <cncbasher_> jt take a look now at the wiki , any changes you recon
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[10:59:43] <jthornton> looks good to me
[11:00:58] <cncbasher_> thanks for the assistance
[11:01:03] <jthornton> np
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[11:02:07] <cncbasher_> now should we bet on how many cannot get it working in say a one week period .. the winner takes over the thread ..
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[11:07:22] <jthornton> http://imagebin.org/226294
[11:08:27] <cncbasher_> looking nice
[11:08:48] <cncbasher_> good clean interface i think
[11:08:59] <jthornton> thanks
[11:09:15] <jthornton> it's fun actually once you start to figure out how to do it
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[11:11:54] <archivist> I wonder if I should be creating a gui for my hobber project
[11:12:23] <jthornton> only archivist will know the answer to that :)
[11:12:49] <jthornton> is that the one with all the slides on it?
[11:13:03] <archivist> I need to set division ratios and angles etc
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[11:13:28] <jthornton> sounds like a custom gui is what you need
[11:14:00] <archivist> and feed in helix angles of the cutter
[11:14:15] <archivist> and left/right hand
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[11:17:01] <archivist> probably needs its own tool table as you never change a tool during a job, but each has a bunch of parameters the current tables cannot handle
[11:17:49] <jthornton> I wonder how you would use the parameters in linuxcnc?
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[11:19:48] <Loetmichel> g'day!
[11:20:46] <archivist> jthornton, probably direct to hal comps
[11:21:03] <jthornton> ok, that makes sense now
[11:22:39] <archivist> the one i am restoring lack features, was a production tool
[11:23:19] <archivist> hanging a few motors and an encoder or three off it may make it just right
[11:23:30] <jthornton> cool
[11:28:12] <archivist> Z was a cam, that can be a stepper/servo, A needs a servo geared to the head by tooth qty cutter hand etc and Z differential angle of A to the division from the spindle
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[12:05:05] <Tom_itx> looks good jthornton
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[12:11:26] <r00t4rd3d> Eww torrents already of "No Easy Day"
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[12:45:44] <jdh> connor: http://www.chaski.com/homemachinist/viewtopic.php?f=4&t=87756
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[12:52:29] <Jymmm> jdh: nice find =)
[12:56:17] <archivist> but if you dont have a posh grinder like him, a magnifier and dremel gets http://www.collection.archivist.info/archive/DJCPD/PD/2012/2012_08_07_screw_cutting_tool/IMG_1289.JPG
[12:57:19] <Jymmm> archivist: I need to get you a 6" rule =)
[12:58:17] <Jymmm> with 100THs on it for scale in the stuff you create
[12:58:27] <jdh> archivist: how do you keep the angled edges flat?
[12:58:55] <archivist> flat enough is my specification :)
[12:59:21] <archivist> the thread that tool cut http://www.collection.archivist.info/archive/DJCPD/PD/2012/2012_05_06_Leawood/IMG_1240.JPG
[12:59:21] <jdh> using a cylindrical grinding wheel?
[12:59:40] <archivist> yes
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[13:00:24] <archivist> iirc that is 3/4 dia thread
[13:00:36] <jdh> DIY compression fitting?
[13:01:09] <archivist> not compression see solder on nipple
[13:01:41] <archivist> is for steam main drain taps
[13:02:13] <jdh> nifty.
[13:02:57] <archivist> cnc internal threading is fun to watch
[13:03:09] <Jymmm> Thank you jdh, I think you just gave me a solution to an issue I was having!
[13:04:00] <jdh> uhm... you are welcome I guess. Those DX egg things weren't my idea though.
[13:04:12] <Jymmm> DX eggs?
[13:04:19] <jdh> nevermind.
[13:05:43] <Jymmm> archivist: http://metaltronics.wordpress.com/2008/03/21/making-gears/
[13:08:53] <archivist> linuxcnc with a rotary does all that and more
[13:09:36] <Jymmm> I just see tiny made gears and think of you is all.
[13:13:39] <awallin> anyone built a telescope mount? needs large diameter worm gears..
[13:14:56] <archivist> getting your gear accurate will be fun
[13:16:03] <archivist> measuring accuracy is as hard, do you have a collimator/angle dekkor
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[13:18:17] <archivist> most of the worm dividing we has at work was terrible when we measured, only the 1940's Boley jig mill had good enough worm division
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[13:20:52] <gmagno> Hello, I don't want to be unfair with the seller, so, before saying his PCB drills (http://www.ebay.co.uk/itm/10x-0-2mm-NEW-Carbide-PCB-Dremel-Jewelry-CNC-Drill-Bits-/140548880603?pt=UK_Home_Garden_PowerTools_SM&hash=item20b95db8db&_uhb=1) are crap, I'd like to share this problem I'm facing. I can't find the correct Z distance to drill PCB, I get too thin tracks or I get to rough... I've also noticed that the drill breaks... it is too l
[13:20:53] <gmagno> ong. After breaking it becomes more robust. Is it a dill problem? Are these drills ordinary? Do you recommend any other drills for pcb?
[13:21:48] <gmagno> I feel like I should break the drill before use it... which also seems stupid...
[13:21:53] <archivist> is it user error, or a sloppy machine
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[13:23:13] <archivist> is your chuck concentricity beyond reproach
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[13:23:53] <archivist> rpm high enough, feed rate correct
[13:25:31] <JT-Shop> cutting traces with a drill bit???
[13:25:33] <gmagno> archivist, rpm is about 1000rpm, feed rate is slow, if I increase speed the drill will break
[13:26:24] <gmagno> JT-Shop, what do you mean?
[13:26:36] <archivist> 1000rpm is very slow for those when drilling
[13:26:51] <JT-Shop> are you drilling holes or cutting grooves?
[13:26:52] <gmagno> archivist, I increase up to 20,000
[13:27:57] <gmagno> JT-Shop, not sure what cutting grooves is. But I'm talking about creating the pcb tracks, not drilling holes
[13:28:05] <gmagno> lemme upload a picture
[13:28:11] <archivist> wrong tool, user error
[13:28:15] <JT-Shop> can't do that with a drill bit
[13:28:34] <cncbasher_> gmagno: are you milling the copper away ?
[13:28:36] <jdh> you could try, but they would snap
[13:28:36] <archivist> use a v engraving bit
[13:30:22] <cncbasher_> those you show are only drilling bit's , you need good concentric spindle and high speeds
[13:31:06] <cncbasher_> they cannot take and side loads , such as milling , what spindle motor are you using
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[13:32:04] <cncbasher_> any movement in your machine will kill those drill bits
[13:32:50] <gmagno> ok, I'm back from the garage, gonna upload the photos. Hmm, so I'm using the wrong drill bits to do this... :-/
[13:32:56] <jdh> http://www.ebay.com/itm/140838359198
[13:33:04] <jdh> something more like that.
[13:34:35] <gmagno> jdh, can I do 0.2 thick copper ways with that kind of drill?
[13:34:37] <cncbasher_> beware pcb drills on ebay some are drill bits only , and some are milling and called drill bits ( fishtail )
[13:35:16] <gmagno> cncbasher_, I think the term is mill, sorry for my mistake
[13:36:04] <jdh> gmagno: that is more a function of your machine.
[13:36:05] <cncbasher_> dont worry many people confuse the two for pcb working ..
[13:38:15] <gmagno> ok, finally I've uploaded the photo. Well, right now this is just to laugh a bit since you've solved the problem already... http://postimage.org/image/urfii3523/185dc384/
[13:38:56] <gmagno> that was done with a broken drill
[13:38:56] <cncbasher_> ok what type of machine are you using ?
[13:39:05] <gmagno> cncbasher_, what do you mean?
[13:39:12] <gmagno> cncbasher_, this machine was done by me
[13:39:16] <jdh> looks like crap, but not bad for a drdill bit
[13:39:30] <cncbasher_> diy router ?
[13:39:40] <cncbasher_> type of spindle ?
[13:39:44] <gmagno> http://www.youtube.com/watch?v=uUA4xg7bWC4&feature=plcp
[13:40:10] <gmagno> I'm using a dremel-like drill
[13:40:15] <gmagno> a cheap one
[13:40:21] <gmagno> it cost me about 15€ :D
[13:40:27] <Loetmichel> wronm rotation direction?
[13:40:30] <Loetmichel> wrong
[13:40:31] <cncbasher_> no chance the dremel is just not concentic enough
[13:40:59] <gmagno> cncbasher_, :( that's really bad news
[13:41:00] <cncbasher_> and any slop in the slides will just snap the drills
[13:41:19] <jthornton> gmagno, it's not that your using the wrong drill bits it's you don't use drill bits to engrave you use V cutters
[13:42:15] <cncbasher_> try v bits as they have more body to them for side loads
[13:42:56] <Loetmichel> gmagno: *giggle* ... did you wantetd to DRILL the holes , or burn them down( in the video)
[13:42:58] <gmagno> jthornton, I got that. But cncbasher_ is also saying that my dremel might be source of problems too. Anyway, I'll try with the one I have
[13:43:09] <gmagno> Loetmichel, :D I know
[13:43:10] <Loetmichel> -etd
[13:43:19] <jdh> no way to tell until you get a bit made for cutting.
[13:43:22] <cncbasher_> your only cutting small depths so having a slight side angle is no problem
[13:43:31] <gmagno> Loetmichel, I talked to ppl here in the channel, and I was told about very high rotation speed
[13:43:44] <Loetmichel> for engravoing: yes
[13:43:56] <Loetmichel> for drilling 3mm holes: NO ;-)
[13:44:31] <jthornton> http://imagebin.org/226303
[13:44:38] <cncbasher_> dremels are not concentric as the bearings are in the mouldings and move .. use a proper spindle and you will transform to decent cutting
[13:45:52] <gmagno> ok
[13:45:58] <gmagno> jthornton, what's that?
[13:46:15] <cncbasher_> but then it depends on the mechanical rigidity of the machine any movement is going to cause problems with such small cutters
[13:46:19] <jthornton> just a gladevcp hal demo that runs with just hal
[13:48:14] <jthornton> gmagno, even if you had a proper spindle you still don't engrave with a 0.008" drill bit
[13:48:34] <jthornton> they are not designed to handle any side loads at all
[13:49:05] <jthornton> to drill a hole with one you need to be running about 50k RPM
[13:49:14] <gmagno> jthornton, hmm ok, didn't know that. I'm using 0.3mm, is that ok?
[13:49:29] <jthornton> ok for what?
[13:49:34] <jthornton> drilling a hole?
[13:49:40] <gmagno> yeah
[13:49:49] <gmagno> for milling I have to buy new ones
[13:50:05] <gmagno> actually, I'm already doing that
[13:51:21] <gmagno> jthornton, which minimum diameter would you recommend to engrave?
[13:51:35] <gmagno> bit diameter, I mean
[13:53:26] <jthornton> I don't make pcb boards so I assume it depends on the width you want
[13:53:37] <jthornton> http://www.ebay.com/itm/10-PCB-router-engraver-engraving-tool-blade-cutter-bits-/160593156364?pt=LH_DefaultDomain_0&hash=item256419190c
[13:53:59] * jthornton heads out
[13:56:48] <gmagno> ok, thanks a lot for helping! (once again...)
[14:00:09] <Loetmichel> cncbasher_: you're right, dremes have nothiing even close ti a good bearing. but still they can engrave, with the right tool
[14:00:37] <Loetmichel> and without swarf buildup ant the cutting edges
[14:01:54] <Loetmichel> gmagno: do you have a diamond disc?
[14:01:59] <Loetmichel> for the dremel?
[14:02:03] <gmagno> Loetmichel, never heard about that
[14:02:05] <gmagno> :)
[14:02:09] <Loetmichel> and some broken TC bits?
[14:02:21] <gmagno> lemme google on diamond disc
[14:02:44] <Loetmichel> gmagno_ german?
[14:02:50] <gmagno> portuguese
[14:03:10] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=8958
[14:03:18] <Loetmichel> the engraving bits selfmade
[14:03:37] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=8961 <- making them witr h a diamond disc
[14:04:26] <Loetmichel> http://www.cyrom.org/pce/Stichelschleifen.avi
[14:04:40] <gmagno> Loetmichel, looks awesome
[14:05:40] <Loetmichel> just a warning: i needed about 20 broken Tungsten carbide bits before the first engraving bitz was cutting... needs a bit of experience to do that "freehand"
[14:08:31] <gmagno> those are great news
[14:08:52] <gmagno> gonna try to make one with my broken drill
[14:09:23] <L84Supper> anyone going to IMTS in 2 weeks?
[14:09:25] <gmagno> going back to the garage, and put my hands on work
[14:09:30] <gmagno> thanks for help!
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[14:20:59] <cradek> L84Supper: I've been to one, and that's enough for me
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[15:58:47] <Connor> jdh: Treadmill motor just came in. :)
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[16:30:54] <jdh> connor: got a way to mount it?
[16:30:57] <jdh> belt?
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[16:31:59] <Connor> Going belt drive.
[16:32:03] <Connor> I have Hoss's plans..
[16:32:18] <Connor> I'll mill out the mounts and stuff in next week or so.
[16:32:42] <Connor> I want to thread the tophat and then re-tram the machine.
[16:39:23] <Connor> Can you cut still with a 2 flute end mill ?
[16:39:43] <Connor> I'm just realizing that I've never done steel and I have one part to make for the PDB that requires steel.
[16:40:27] <jdh> just run the spindle twice as fast!
[16:41:32] <Connor> jdh: Nice find on those other internal threading tooling
[16:42:23] <jdh> I've got some blanks, might try some this w/e if the weather sucks
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[16:53:03] <IchGuckLive> Hi all
[16:53:10] <jdh> <all> Hi
[16:53:22] <IchGuckLive> isaac is stock in the golf cost shore
[16:53:39] <IchGuckLive> wwl-TV nice pictures
[16:53:49] <IchGuckLive> http://www.ustream.tv/ live
[16:54:16] <IchGuckLive> levy break water to the roof
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[16:57:20] <IchGuckLive> no weather forcust had that stock in the predict
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[17:56:12] <IchGuckLive> news conference
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[19:25:12] <Connor> man, it's dead in here today.
[19:31:02] <jdh> <- working.
[19:32:00] <jdh> but, the drill rod I got from mcmaster was successfully delivered. Packed very well.
[19:33:33] <Connor> ROFL
[19:33:39] <Connor> 3rd time is the charm!
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[19:34:20] <Connor> Debating weather to retram the mill and start cutting out the motor mounts.. or wait till I get the threading tool do the threading and then retram.
[19:34:47] <jdh> got blanks? get grinding.
[19:35:21] <Connor> Yes. But, I ordered 2 from Shars.. should be here in a day or two.
[19:35:27] <Connor> I need to order the pulleys and belt.
[19:36:25] <Connor> I'll have to get a new motor controller too.. because the stock one is only rated at 10amps.
[19:36:59] <Connor> the treadmill pulls 16 amps
[19:37:07] <jdh> I was going to clamp a lathe tool in the vise to cut down the drill rod shank, but can't find an r8 chuck anymore.
[19:38:17] <jdh> I'm thinking about trying to stick some 23's on my 7x instead. I have a tb6560 board in a box somewhere.
[19:40:21] <Connor> I'm still having issues with my 7x. Belt kept coming off.... I got a new pulley with side flanges.. then it started pulling the pulley off because it was press fit..
[19:40:41] <Connor> so I drill/tapped it for 4mm set screw.. dang it if it STILL isn't pulling it off.. set screw is working loose.
[19:40:59] <jdh> something bent or angled?
[19:41:22] <Connor> No. everything looks good. I've tweaked the motor angle till I'm blue in the face..
[19:41:39] <Connor> problem is.. when I start tightening it up.. it throws it off a tad.
[19:41:50] <Connor> VERY sensitive..
[19:41:53] <jdh> I should sell my used-once X2 to free up some space
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[19:44:00] <Connor> http://www.kbelectronics.com/data_sheets/kbcc.pdf
[19:44:06] <Connor> looking at getting that speed controller.
[19:44:25] <jdh> reversing?
[19:44:29] <Connor> YUP! :)
[19:44:44] <Connor> with dynamic breaking too
[19:44:48] <jdh> they are $120ish?
[19:44:57] <Connor> that's the NON Reversing price.
[19:45:03] <jdh> oh.. how much?
[19:46:53] <Connor> http://www.galco.com/buy/KB-Electronics/KBCC-125R
[19:46:57] <Connor> 202.15
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[19:47:20] <jdh> get a real motor and a vfd
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[19:48:36] <Connor> VFD's are way out of my price range..
[19:48:58] <jdh> cheaper than that. Maybe not reversing though
[19:49:05] <Loetmichel> Connor: really?
[19:49:12] <Connor> But, then I have to buy another motor...
[19:49:16] <Loetmichel> no 50$ to spare?
[19:49:33] <syyl_> how much is the speed controler from kb?
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[19:49:50] <Connor> the one that can reverse is $202.15
[19:50:09] <syyl_> for 200 bucks, you can get a vfd AND a new motor
[19:50:17] <syyl_> new, used motor ;)
[19:51:09] <Connor> 75.28 FOR THE KBIC-125 non-reversing model.
[19:51:15] <Connor> syyl_: Show me. :)
[19:51:27] <syyl_> ebay :)
[19:51:28] <jdh> for non-reversing, get a $25 ebay treadmill controller
[19:51:33] <mrsun> ye cheap vfds exists =)
[19:51:38] <mrsun> mine cost about $100
[19:51:51] <mrsun> or wait :P
[19:51:57] <mrsun> no .. about $200 :P
[19:52:40] <mrsun> yakasawa J1000
[19:53:15] <mrsun> the motor was a motor with bad bearings i got
[19:53:29] <mrsun> so total setup was about like $220 =)
[19:53:43] <Connor> 1305 watt motor, used from ebay. external fan blade. 1.75 amps Continues duty.
[19:53:56] <Connor> around 6500-7000 RPM @ 90v
[19:53:59] <syyl_> i got a few used vfds from ebay
[19:54:41] <Connor> What's the all the rage with VFD's vs SCR vs PWM etc etc..
[19:57:37] <Connor> Maybe I'm stupid for going the Treadmill motor way.. and the reversing is just for rigid tapping.. which, I'm not even doing.. I thought it would be nice to have the machine be able to reverse..
[20:07:07] <jdh> http://dealerselectric.com/item.asp?cID=28&PID=4581
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[20:10:18] <jdh> http://dealerselectric.com/item.asp?cID=111&PID=4525
[20:10:43] <jdh> $200ish, bigass motor (compared to stock) and a vfd
[20:11:23] <Connor> 3600 RPM ?
[20:11:34] <Connor> 1HP.
[20:11:54] <jdh> do 1.5:1 belt?
[20:12:10] <jdh> stock motor is really like .5-.6HP
[20:15:27] <Connor> I'm not changing gears at this point..
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[20:18:19] <jdh> there are some reversing KB's on ebay 120ish
[20:18:46] <jdh> and a make offer one.
[20:19:16] <Connor> What are you searching on ?
[20:19:53] <jdh> kbcc speed controller
[20:22:31] <jdh> 380463815418
[20:23:22] <jdh> the stock controller looks like a cloned KBIC
[20:35:43] <Connor> made a $95.00 offer on the 120.00 one.
[20:35:45] <Connor> we'll see.
[20:37:27] <andypugh> I blew up my motor and it took the KBIC with it. So I fitted a 3-phase motor: You can just about see it here: http://youtu.be/47y6RgAK--8
[20:38:05] <Connor> that's one hell of a motor.
[20:38:18] <andypugh> 1hp.
[20:38:28] <Connor> Looks bigger than that.
[20:38:39] <andypugh> It's pretty much the smallest there is.
[20:41:42] <andypugh> 80 frame. Similar on eBay for £78 brand-new.
[20:42:52] <andypugh> Then a second-hand inverter is about £75 too.
[20:43:10] <andypugh> Cheaper than the KBIC, easier to control, and less likely to blow up.
[20:44:30] <andypugh> The KBICs have the rather unfortunate feature that the speed control pot floats at mains voltage. Makes it non-trivial to control with a parallel port..
[20:45:01] <andypugh> (A DC-DC converter is part of the solution, if you need to)
[20:45:04] <Connor> andypugh: I already have the C-41 thingie to control it.
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[20:45:20] <Connor> What I'm currently using on existing setup.
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[20:53:17] <Nick001-Shop> Trying to tune a servo and I have alot of small spikes. How do I flatten them out? Scan is at http://www.janick.com/1/Scan-1.png Axis.0.f-error Does pastebin allow these kinds of shots?
[20:54:37] <Connor> got it for 110 + shipping.
[20:54:39] <Connor> not too bad.
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[21:00:07] <andypugh> Nick001-Shop What's the scale?
[21:00:31] <andypugh> 200nm might be good.
[21:01:08] <tjb1> Hello channel
[21:04:32] <Nick001-Shop> 200u/div not sure of what i'm doing
[21:05:53] <Jymmm> tjb1: Hello viewer
[21:05:59] <tjb1> How are you Jymmm
[21:06:24] <Jymmm> tjb1: Other than Logistics, pretty good
[21:06:37] <tjb1> Shipping?
[21:06:53] <Jymmm> resourcing
[21:08:23] <tjb1> You trying to get it from china
[21:08:44] <Jymmm> No, USA
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[21:09:38] <tjb1> That should be easy ;)
[21:12:26] <andypugh> Nick001-Shop: 200u mm or 200 u in?
[21:13:48] <Nick001-Shop> 200n/div is real bad http://www.janick.com/1/scan-2.png
[21:13:58] <andypugh> Nick001-Shop: Anyway, the answer might be a bit of DGain. (probably .01, 0.001, .0001 sort of numbers)
[21:14:56] <andypugh> No, what I mean is if the f-error is 200nm (200 u-mm) then that might be as good as your machine can manage.
[21:15:00] <tjb1> Jymmm: Stuff is on the way
[21:15:03] <tjb1> WA to PA
[21:16:16] <Nick001-Shop> shouldn't that line be a lot flatter than that?
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[21:18:37] <Nick001-Shop> same thing with the velocity - or is that showing coging from the magnets - permanent magnet dc motor
[21:19:19] <DJ9DJ> gn8
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[21:20:01] <Jymmm> tjb1: heh, I wish it was that easy =)
[21:20:21] <tjb1> I hope it gets here soon, table needs built
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[21:22:53] <tjb1> Welding frame saturday :D
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[21:25:20] <tjb1> Any tips on how to keep everything square
[21:25:31] <Jymmm> a string
[21:25:43] <Jymmm> measure diagonally
[21:25:57] <Jymmm> then clamp like crazy
[21:25:59] <tjb1> I don't have enough to jig the whole thing up at once
[21:26:15] <Jymmm> you dont have enough clamps? get more
[21:26:32] <tjb1> I would need over 14 lol
[21:26:39] <Jymmm> ok
[21:26:44] <tjb1> Im going to cut everything
[21:26:47] <jthornton_> we use a thousand clamps and ratchet straps
[21:27:00] <tjb1> then sandwich the piece between two scraps clamping onto the other piecs
[21:27:14] <Jymmm> tjb1: clamps are cheap compared to something not ebing square
[21:27:18] <Jymmm> being
[21:27:22] <tjb1> sandwich the one I'm welding between 2 scraps that are clamped to the piece I'm welding
[21:27:31] <tjb1> then welding square on one side
[21:27:38] <tjb1> check the other side with square
[21:27:48] <jthornton_> tack every thing first then recheck for square then don't weld hot
[21:27:49] <tjb1> measure then tack
[21:27:51] <tjb1> and tack
[21:27:55] <tjb1> and more tacks ;)
[21:27:58] <tjb1> until finished
[21:28:28] <tjb1> Probably mig the corners and tig the flats
[21:28:53] <Jymmm> tjb1: but more clamps now
[21:28:56] <Jymmm> buy
[21:29:01] <tjb1> pipe?
[21:29:20] <Jymmm> depends, could be C
[21:29:33] <tjb1> Well I can't really think of a clamp that would help me
[21:29:41] <tjb1> besides a special one
[21:30:18] <Jymmm> do you have a TRUE square edge that you can use for everythign else?
[21:30:42] <tjb1> We have squares but no machinist squares
[21:31:14] <Jymmm> Not squares, a TRUE square jig that you can clamp other parts to
[21:31:51] <tjb1> no
[21:32:09] <jthornton_> upi kidy mrrfm s ;rbr; smf s dwistr\
[21:32:22] <Jymmm> you make a fixture that's "perfect", then use the clamps to secure the pieces to the fixture. But you STILl check for squaeness in case somethign moved.
[21:32:23] <Connor> Okay, Belt, Pulleys, Motor Controller on the way.. only thing left is the new bearings..
[21:32:51] <tjb1> I can frame up the extrusions to use as a flatter surface than anything I have
[21:33:01] <Jymmm> tjb1: and dont get lazy and not check each time.
[21:33:24] <Jymmm> dont rely upon the fixture, it's just to help out.
[21:33:28] <tjb1> I know
[21:33:31] <Jymmm> k
[21:33:34] <tjb1> I checked the garage floor, its out 1/4"
[21:33:51] <tjb1> so I will bolt all the extrusions together and setup on that
[21:34:01] <tjb1> They are the best I have
[21:34:21] <Jymmm> If layed flat =)
[21:34:37] <Connor> Ill' see about getting the alumn pipe extrusion from the local company for the motor mount.
[21:34:51] <tjb1> Well I can shim them, they are stiff enough they won't just fall on their own weight
[21:35:48] <Jymmm> tjb1: were you going to set this up on the ground?
[21:35:56] <tjb1> No
[21:36:05] <Jymmm> ok, that would have killed your back.
[21:36:13] <tjb1> Probably on a trailer we have
[21:36:27] <Jymmm> car trailer?
[21:36:29] <tjb1> yes
[21:36:43] <Jymmm> with nice beefy frame?
[21:36:50] <tjb1> yes but it was homemade
[21:36:52] <tjb1> so not nice a square
[21:36:58] <tjb1> *and
[21:36:59] <Jymmm> but flat?
[21:37:04] <tjb1> wooden deck
[21:37:20] <Jymmm> forget the deck part, I'm tlaking steel
[21:37:32] <Jymmm> something you cna CLAMP to
[21:37:45] <tjb1> Doubt it, we didn't build it
[21:37:47] <Jymmm> that's perfectly flat and not bowed
[21:37:58] <Jymmm> grab a piece of string and check =)
[21:38:04] <tjb1> Not at home :)
[21:38:16] <Jymmm> I idn't mean right now silly =)
[21:38:17] <tjb1> The deck is 2" thick
[21:38:27] <tjb1> the frame sides are 6-7" high
[21:38:35] <Jymmm> and dont set the deck on fire either =)
[21:39:00] <Jymmm> unless you have a bag of marshmellows
[21:39:06] <tjb1> I gotta practice tig before I play on the frame
[21:39:34] <tjb1> Are you experienced with tig?
[21:39:48] <Jymmm> nope
[21:40:07] <Jymmm> talk to jt on that
[21:40:23] <tjb1> jt or jthor?
[21:40:38] <Jymmm> they are one in the same (usually)
[21:40:53] <tjb1> jthornton_:
[21:41:11] <Jymmm> and no plastic or spring clamps
[21:41:23] <tjb1> Can you recommend an amperage for 3/32 tungsten on 1/8 tubing?
[21:43:35] <Jymmm> tjb1: bunch of vise-grips may work too
[21:43:36] <tjb1> What do you think about sandwiching the piece?
[21:43:36] <tjb1> That should…should ensure the sides are parallel
[21:43:55] <Jymmm> you can use whatever "fixture" you want, it's what works best for you.
[21:44:12] <Jymmm> Just need to make sure pieces dont move
[21:44:20] <tjb1> I have it made so the frame doesn't HAVE to be perfect
[21:44:33] <tjb1> The gantry and x rails will be put together, then the flanges will be welded to the frame
[21:44:40] <tjb1> if you know what I mean
[21:44:56] <Jymmm> tjb1: Just make sure they are not ALL |_/
[21:45:04] <tjb1> Yeah
[21:45:09] JT-Shop-2 is now known as JT-Shop
[21:45:22] <JT-Shop> don't need no fixture you can make it on the gravel and it can still come out square or not
[21:45:42] <tjb1> JT, whats a ballpark amp for 3/32 tungsten and 1/8" wall?
[21:46:14] <JT-Shop> what kind of joint
[21:46:21] <tjb1> butt
[21:46:21] <andypugh> 50?
[21:46:44] <andypugh> Speaking as a physicist that is, so more than 5 and less than 500 :-)
[21:46:45] <JT-Shop> 40-60
[21:47:08] <tjb1> Thank you
[21:47:19] <JT-Shop> 15cfm of argon
[21:47:42] <JT-Shop> A36?
[21:48:12] <tjb1> The tubing or filler?
[21:48:32] <Jymmm> tjb1: Depending on your pars, this might be an option... http://www.harborfreight.com/11-inch-swivel-pad-lock-grip-pliers-39535.html or something like it
[21:48:34] <JT-Shop> the material your welding is structural tubing?
[21:48:52] <tjb1> Not sure JT, most likely
[21:48:59] <JT-Shop> if so that is A36, make sure you clean off the mill scale before TIG welding
[21:49:08] <tjb1> Wire wheel on grinder?
[21:49:27] <JT-Shop> I use a flap wheel on a 4 1/2 angle grinder
[21:49:34] <tjb1> We have lots of those
[21:49:47] <JT-Shop> I keep three grinders at the weld station with different wheels on them
[21:50:04] <JT-Shop> 80 grit works well and is not to agressive on the base metal
[21:50:07] <tjb1> Do you use chemical sharpeners?
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[21:50:23] <JT-Shop> for the electrode?
[21:50:26] <tjb1> Yes
[21:50:35] <JT-Shop> grinder
[21:50:55] <JT-Shop> grind marks must be parallel to electrode shaft
[21:51:17] <tjb1> You have a dedicated for the tungsten or is contamination not that big of a problem?
[21:51:59] <JT-Shop> I seldom use that wheel for anything else it is too fine of a grit so almost dedicated
[21:52:36] <andypugh> Thorium dust inhalation FTW!
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[21:54:32] <tjb1> I need to learn tig
[21:54:37] <tjb1> practice on good metal
[21:55:09] <JT-Shop> I don't breath when I sharpen them...
[21:55:21] <JT-Shop> practice on a piece of stainless
[21:55:46] <tjb1> Don't have any stainless
[21:56:25] <JT-Shop> clean steel it is then
[21:56:36] * JT-Shop wanders off to play with the other children
[21:58:58] <Tom_itx> count all fingers and toes when you finish
[22:07:09] <Loetmichel> and more urgend: check your wallet... depending on the age of the kids ;-)
[22:07:17] <Loetmichel> urgent
[22:07:31] <tjb1> I am the kid ;)
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[22:57:37] <r00t4rd3d> how old are you?
[22:57:49] <r00t4rd3d> aww he left
[23:21:01] <Loetmichel> *snicker*
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[23:29:46] <ReadError_> i found my true calling
[23:29:48] <ReadError_> bering.sea.gold.under.the.ice.s01e01.proper.hdtv.x264-momentum.mp4
[23:30:08] <Tom_itx> most of those are loozers
[23:30:29] <ReadError_> man these guys with a super ghetto setup made 28k in a few days
[23:30:34] <ReadError_> sounds good to me ;)
[23:30:47] <Tom_itx> the guy and his daughter fight continually and the blond guy has been in and out of prison for lack of child support etc
[23:31:19] <Tom_itx> would you trust someone else to be in control of your air supply?
[23:33:12] <Tom_itx> you gotta have plenty of up front money to get started too. buying the lease isn't cheap nor getting the equipment
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[23:38:40] <ReadError_> blonde guy is gone
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[23:39:40] <ReadError_> what they need is some type of hydraulic boom or arm
[23:39:42] <Tom_itx> he quit the one guy and finished the season on another boat
[23:39:53] <ReadError_> that can run in a grid type pattern
[23:39:55] <Tom_itx> one uses a front loader
[23:40:03] <ReadError_> and a spinning wheel to kick up the sand
[23:40:07] <ReadError_> this is a new season
[23:40:15] <ReadError_> they are actually doing it under ice
[23:40:19] <ReadError_> they cut a hole
[23:40:43] <Tom_itx> i know i saw it
[23:40:54] <Tom_itx> but the same guys are doing it
[23:41:00] <Tom_itx> just fewer of them
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[23:49:45] <ReadError_> if you could only have 1 weapon (besides something that uses projectiles), what would it be?
[23:50:01] <ReadError_> i think i would choose a tactical tomahawk
[23:50:19] <Tom_itx> chemical
[23:50:34] <ReadError_> its for zombies
[23:50:36] <ReadError_> they are immune
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