#linuxcnc | Logs for 2012-10-19

[00:00:47] <Nick001-Shop> back in a while
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[00:02:03] <tjb1> r00t4rd3d: You cut the whole thing in 2.5 hours?
[00:02:36] <r00t4rd3d> no just one panel
[00:02:41] <r00t4rd3d> front panel
[00:02:56] <r00t4rd3d> the top only took 30 minutes
[00:03:03] <andypugh> r00t4rd3d: What wood?
[00:03:08] <r00t4rd3d> oak and pine
[00:03:17] <r00t4rd3d> oak sides, pine rest
[00:04:35] <andypugh> Yeah, thought so. I don't find pine to be a particularly attractive wood. But then I find myself strangely tempted by http://purpleheartflooring.com so don't pay much attention to me.
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[00:05:09] <r00t4rd3d> i dont like pine either.
[00:05:33] <tjb1> Im getting better at TIG so I guess I accomplished something today
[00:05:34] <r00t4rd3d> i let them pick the wood though
[00:06:31] <jthornton> andypugh, how is the arms race going?
[00:06:38] <Anon9798> pcw: You there?
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[00:07:32] <r00t4rd3d> pcw_home
[00:08:06] <andypugh> I got the G-code debugged and made one rod/knob thing. I will do the other and the brackets tomorrow. My enthusiasm waned when faced with a 10' length of 25mm stainless bar and a 20mm spindle through-hole. So I need to hacksaw off bite-sized chunks.
[00:08:27] <Tom_itx> got a chop saw?
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[00:08:55] <andypugh> No, and I am not likely to buy one in the current circumstances.
[00:09:07] <jp_> pcw_home, could the 7i44 be used somehow with hiperface encoders?
[00:09:09] <Tom_itx> i sometimes use an abrasive wheel too
[00:09:13] <andypugh> (I don't really have the space for one either)
[00:09:27] <jthornton> can you mill the bar into smaller chunks?
[00:09:29] <Tom_itx> small 4" angle grinder with a cutoff wheel
[00:09:44] <jthornton> yea that works for me
[00:09:55] <jthornton> I use a 4 1/2" though
[00:10:04] <Tom_itx> yeah i think mine is as well
[00:10:06] <andypugh> The hacksaw is reasonably expedient. The angle grinder makes too much noise for midnight.
[00:10:28] <Tom_itx> give you a good workout anyway
[00:10:46] <andypugh> (and the angle grinder is living in the house so as not to be usable by thieving scrotes to bypass my secondary security if they do get in)
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[00:11:10] <andypugh> I have hacksawed a 6" bar once. But it took a while.
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[00:12:17] <Tom_itx> i should post a result here
[00:12:44] <andypugh> jp_: If the encoders are RS485 then the 7i44 will get the signals into an FPGA card. The question then is if the FPGA card can do anything with the data.
[00:12:49] <jthornton> I don't think I've hacksawed stainless before, but I have hacksawed some big chunks of steel
[00:12:59] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/cnc/Lathe/thread1.jpg
[00:13:06] <Tom_itx> finished those up the other day
[00:13:17] <jp_> andypugh, hiperface is part 485 plus sine cos
[00:13:29] <Tom_itx> i sawed some 5/8 stainless bar the other day
[00:13:32] <Tom_itx> wasn't so bad
[00:13:43] <Tom_itx> no worse than mild steel really
[00:14:38] <andypugh> The sine-cos part is the hard bit. You need fast analogue, and there isn't a lot of that for LinuxCNC.
[00:15:13] <jp_> andypugh, what about the new mesa serial analogue cards?
[00:15:23] <andypugh> You might be able to modify my Arduino Resolver code. That samples sine-cos and converts to position, then sends the data to a Mesa UART at 1Mbit.
[00:15:48] <jp_> i was going to ask if you still had those sheilds
[00:16:05] <Tom_itx> that pin is holding these on: http://tom-itx.dyndns.org:81/~webpage/cnc/Lathe/Pic_1010_002.jpg
[00:16:47] <Tom_itx> hand carved brazillian walnut
[00:16:50] <andypugh> You wouldn't want or need the shield, that mainly provides excitation for the resolver.
[00:17:16] <jp_> oh i thought you might of had a 485 driver on it
[00:17:37] <andypugh> The UART is 5V ttl
[00:17:58] <jp_> haven't taken a hard look at it
[00:18:13] <jp_> the shield that is
[00:19:06] <andypugh> http://www.ebay.co.uk/itm/BAUMULLER-BM4-FENC-02-001-000-SINCOS-m-HIPERFACE-XLNT-/350482442103?pt=BI_Control_Systems_PLCs&hash=item519a61a777
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[00:19:44] <andypugh> You probably need to talk to PCW, he probably has thoughts on the subject of Hiperface.
[00:20:43] <jp_> yeah. I know ssi is possible just was wondering how much of a strech hiperface was
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[00:21:22] <jthornton> Tom_itx, did you see the threading software?
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[00:23:17] <Tom_itx> nope
[00:24:02] <jthornton> http://imagebin.org/232402
[00:24:20] <Tom_itx> oh
[00:24:25] <Tom_itx> yes, i did see that
[00:24:28] <jthornton> I still have to add the threading part with wire measurements etc.
[00:25:05] <jthornton> so you pick a thread type, then the actual thread and it gives you all the info needed to tap or thread
[00:25:22] <Tom_itx> nice
[00:25:23] <jthornton> also you can pick what drills you have to choose from
[00:26:23] <Tom_itx> i try to keep a full 115? piece set of sharp bits
[00:26:52] <Tom_itx> and a few smaller ones for pcboards
[00:27:27] <jthornton> I like it so far to be able to pick a bit to get the thread percentage you want for the material your threading
[00:27:35] <Nick001> back
[00:27:50] <jthornton> the OD part will give all the info needed to measure the thread pitch with thread wires
[00:28:15] <Tom_itx> so far when i need that i go to the handbook
[00:29:01] <jthornton> me too, but if it is right there on your machine...
[00:29:13] <Tom_itx> yeah
[00:30:00] <jdh> Ihave one on my phone. On the linuxcnc box would be nice though.
[00:30:18] <jdh> I usually google drill tap chart and pick something
[00:31:10] <Tom_itx> i got charts on the wall by the drillpress and lathe
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[00:53:25] <Jymmm> Oh look... this place is crap and I can toss their menu and have a place on the wall for soemthing else!
[00:54:04] <Jymmm> O-ring chart!
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[01:11:24] <tjb1> Why does a coupler for a 3/8" shaft use like a #1 or #2 screw?
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[01:20:09] <jdh> how about a 4-40 instead. or maybe a 6-32
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[01:30:55] <tjb1> jdh: Im gonna put a 10-32 in it
[01:31:00] <tjb1> Its .315 thick...
[01:31:10] <jdh> knock yourself out!
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[01:35:32] <tjb1> Actually its a 5-6
[01:35:41] <tjb1> Probably a 5
[01:35:57] <jdh> uh huh
[01:36:16] <mrsun> i always go 5-56 or WD-40
[01:36:18] <mrsun> but thats me :P
[01:36:28] * mrsun has no idea what numbers you are throwing around :P
[01:36:50] <jdh> mrsun: teh bore of his craque pipe?
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[01:37:19] <mrsun> dont think he should smoke 5-56 nor wd-40
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[01:40:50] <tjb1> jdh: #5 or #6 not a #5-6 :P
[01:41:08] <jdh> you found something in the .us that uses a #5?
[01:41:21] <tjb1> I didnt take the screw out
[01:41:27] <tjb1> I was just going by what allen wrench it uses
[01:41:28] <jdh> I'd be impressed.
[01:42:54] <jdh> but, speaking of oddball sizes. At work, we had a GE circuit breaker. Standalone module with an option for a remote reset. The bolts holding the flip-part-lever-thingie were bigger than 3mm, smaller tham 4mm. Bigger than #6, smaller than #8
[01:45:23] <tjb1> Would you say a metric bolt with an outside diameter measuring 2.75mm = M3?
[01:45:51] <jdh> quite likely.
[01:46:55] <jdh> the only m3 I could find to check was a m3 set screw
[01:47:00] <mrsun> shouldnt it be close to 3mm ?
[01:47:08] <mrsun> there is M2.5 etc also
[01:47:12] <mrsun> at those small sizes
[01:47:33] <jdh> 2.75 seems just a little small.
[01:47:57] <tjb1> let me pull one out again and check
[01:48:13] <mrsun> M2.6 there is also
[01:48:49] <mrsun> http://www.engineersedge.com/hardware/metric-external-thread-sizes1.htm
[01:49:12] <mrsun> M3 has Max 2.98mm Min 2.874
[01:49:18] <jdh> just a little small
[01:49:31] <tjb1> well this one is 2.9
[01:49:36] <tjb1> Maybe that one was screwed up
[01:50:20] <mrsun> aparently :P
[01:50:32] <mrsun> (the thing i wrote)
[01:50:41] <jdh> or it's a 4-40
[01:50:47] <tjb1> Its metric :)
[01:51:07] <tjb1> I use to go to lowes to try and get this stuff…I have since stopped wasting my time
[01:51:14] <jdh> good move.
[01:51:15] <mrsun> is it computer stuff or ?
[01:51:20] <tjb1> I couldnt even get a 10-32 SHCS
[01:51:31] <tjb1> mrsun: Its for the blocks on linear rails
[01:51:35] <mrsun> oh
[01:52:01] <mrsun> gaah i need to sleep
[01:52:07] <mrsun> but cant ... stupid brain stupid brain
[01:52:13] <tjb1> Fastenal wanted $4 for 20 of them when I can get 100 for $4.75 at mcmaster so im trying to get a good order for mcmaster
[01:52:41] <jdh> there is an Ace hardware nearby that has a good selection of bolts various materials, metric also.
[01:53:03] <jdh> I get bulk stuff at fastenal pretty cheap.
[01:53:17] <jdh> but, the hardware store sells 100 of <whatever> pretty cheap usually
[01:54:01] <tjb1> ill check the hardware store
[01:54:04] <tjb1> I hate lowes
[01:54:15] <tjb1> They have the most random selection I have ever seen
[01:54:21] <jdh> they are useful for some stuff.
[01:54:25] <tjb1> They sell M3 bolts but not m3 nuts
[01:54:38] <jdh> I got some M3's from there, they sucked
[01:54:50] <jdh> crappy threads, like they were molded
[01:55:05] <tjb1> Yep nothing but junk
[01:55:12] <tjb1> I made this today :D - http://sphotos-a.xx.fbcdn.net/hphotos-prn1/564051_4469257405520_1685339909_n.jpg
[01:55:12] <jdh> got perfect SS ones at the hardware store, 1/4 the price.
[01:55:52] <jdh> nifty. What material?
[01:58:04] <tjb1> all steel
[01:58:10] <tjb1> Thats the jack from a CB
[01:58:18] <tjb1> where the mic connects
[01:58:55] <jdh> I have those on my steppers
[01:59:27] <jdh> http://tinyurl.com/9nnracd
[01:59:35] <jdh> with my SS 3mm bolts holding the covers on.
[02:01:44] <tjb1> What size?
[02:01:46] <tjb1> nema23?
[02:02:49] <jdh> yeah, 570's
[02:03:24] <tjb1> Those are nice covers
[02:03:33] <jdh> yep. Connor made them for me.
[02:03:39] <tjb1> My wires werent in the little cover/bearing support correctly...
[02:03:44] <tjb1> You can see the wires
[02:03:54] <tjb1> I dont know if you know what i mean
[02:04:40] <jdh> no clue.
[02:04:52] <jdh> did you cut the brackets on the plasma?
[02:05:00] <jdh> what are the slots for?
[02:05:25] <tjb1> Yes
[02:05:29] <tjb1> Slot is for a wire tie
[02:05:34] <tjb1> zip tie
[02:06:02] <tjb1> Not sure what they are called to you
[02:06:10] <jdh> wire ties
[02:06:23] <tjb1> http://www.cncrouterparts.com/images/IMG_0520.JPG
[02:06:24] <tjb1> That
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[02:07:00] <jdh> ?
[02:07:01] <tjb1> See where the cable comes out, there is a grommet there that fits the cable jacket...
[02:07:04] <jdh> that's not a wire tie.
[02:07:26] <tjb1> They made the wires too long so they stick out of hole
[02:08:02] <jdh> shove it back in!
[02:08:11] <jdh> I don't like the DB9
[02:08:16] <tjb1> I tried
[02:08:27] <tjb1> I took the cover off and I cant get it back in enough so the cable jacket is in
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[02:08:44] <jdh> you took the cover off the motor?
[02:09:03] <Connor> You just kill 1/4 of the torque on it..
[02:09:06] <Connor> at least.
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[02:09:20] <tjb1> Just that back coer
[02:09:21] <tjb1> cover
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[02:10:13] <tjb1> Just the 1/2" high one where the wires go in
[02:11:02] <tjb1> How would that make it lose torque?
[02:11:04] <Connor> I've read your not suppose to disassemble steppers.. it kills the torque on them.. something about demagnetizing them and stuff.
[02:11:20] <jdh> only if you pull the rotor out
[02:11:30] <tjb1> I didnt take the armature out
[02:11:42] <Connor> Would think it would be the same taking the cover off, it could still touch the sides of the motor.
[02:12:03] <tjb1> All that cover has is a washer and a spring washer
[02:12:13] <tjb1> and the hole for the wires
[02:12:20] <Connor> not a bearing ?
[02:12:39] <tjb1> The bearing was still on the shaft
[02:14:00] <tjb1> Im not worried about it
[02:14:08] <tjb1> Just pisses me off they couldnt make them correctly
[02:14:27] <Connor> make what correctly ?
[02:15:18] <tjb1> So the jacket is in the grommet
[02:15:22] <jdh> get some black RTV and 'caulk' the gap
[02:16:49] <tjb1> Im not worried about the hole, I am worried about the stress on those wires
[02:16:59] <tjb1> But I taped the cable directly to the motor that that portion cant flex
[02:17:59] <tjb1> *motor so that
[02:19:01] <jdh> the rtv would act as a strain relief.
[02:20:25] <jdh> we replaced an ancient round slo-syn stepper yesterday. It had been there for 15 years? Ran off a full-step TBM-105 (huge) drive and the motor would burn you if you touched it.
[02:21:04] <jdh> the insulation on the wires had flaked off on the first half inch where it came out of the motor
[02:22:30] <tjb1> http://sphotos-b.xx.fbcdn.net/hphotos-ash3/530587_4469490131338_930172937_n.jpg
[02:22:40] <tjb1> http://sphotos-b.xx.fbcdn.net/hphotos-snc7/3444_4469494171439_930159285_n.jpg
[02:22:47] <tjb1> You can see the bracket in use in both of those
[02:22:51] <r00t4rd3d> http://www.instructables.com/id/Guino-Dashboard-for-your-Arduino/
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[02:24:14] <jdh> http://www.wimb.net/sec_slosyn/img41/tbm105.jpg
[02:24:47] <jdh> that thing is 18" long. Drives a 2amp nema23 stepper
[02:29:44] <tjb1> Not very much power
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[03:20:50] <tjb1> If water freezes in a pan, will it try to expand the pan?
[03:21:28] <ReadError> should go up
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[03:23:28] <tjb1> We have 2 block heaters not in use…might put them in the water table and just let it freeze and plug them in when needing to use the table
[03:24:29] <tjb1> May just throw the sodium nitrite in it and say screw it
[03:24:32] <tjb1> Gonna die eventually
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[03:52:38] <tjb1> Does linuxcnc take into account the motor acceration rates for doing something like a simultaneous XYZ move where the x or y or both are already moving and its needs to move the Z axis…will it slow the XY down until the Z has reached velocity?
[03:55:43] <jdh> it will make them be at the right place at the right time
[03:57:55] <tjb1> Ok thanks
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[06:54:02] <DJ9DJ> moin
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[07:21:32] <Loetmichel> mornin
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[07:26:27] <Jymmm> Heh, somebody is getting fired from google
[07:28:16] <Loetmichel> ?
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[07:35:17] <Jymmm> someone released the quarterly report 3 hours early (before the market closed); Stocks dropped and they lost about $3 Billion dollars.
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[08:56:49] <alex_joni> Jymmm: ouch
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[09:00:10] <alex_joni> Google Inc. blamed printer R.R. Donnelley & Sons Co. for filing the company.s quarterly statement with the Securities and Exchange Commission more than three hours ahead of schedule.
[09:05:23] <Jymmm> https://www.google.com/finance?q=RR+Donnelley&um=1&ie=UTF-8&sa=N&tab=we
[09:07:33] <Jymmm> https://www.google.com/finance?authuser=0&q=goog&ei=sReBUMjqKISSlAPHeg
[09:10:32] <Jymmm> My bad... $22 Billion. The 9 percent drop in shares of Google Inc., owner of the largest Web-search engine, wiped more than $22 billion from its market capitalization in minutes
[09:11:07] <mazafaka> My Google search history is 'Ca m'enerve, tap drilling, the Resume form'
[09:11:14] <Jymmm> That's with a 'B'. Not 'M', but 'B'
[09:12:02] <mazafaka> That's because all their money are a fake.
[09:13:13] <mazafaka> If they would have sheets of metal in the stock they couldn't lose the money.
[09:18:23] <mazafaka> I mean, all this advertisement and the stuff doesn't really worth money. It's such activity admitted to be useful, and its arrangment should worth something, but the situation is wonky.
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[12:25:03] <maximilian_he> hey
[12:25:17] <maximilian_he> there is a dead link on the linuxcnc.org website
[12:25:25] <maximilian_he> have a look at http://www.linuxcnc.org/index.php/english/documentation
[12:25:55] <maximilian_he> the link for 'Becoming a contributor' is dead, it delivers a 404
[12:26:01] <maximilian_he> for this page http://www.linuxcnc.org/content/view/50/13/
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[12:56:09] <MattyMatt> will #5423=[#5423 MOD 360.0] cancel the accumulated rotations cleanly?
[12:59:00] <MattyMatt> I'd use G92 but it'd hit the machine axis limits eventually
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[13:02:27] <mhaberler> you might want to look into fix, fup, round: http://www.linuxcnc.org/docs/devel/html/gcode/overview.html#sub:Unary-Operation-Value
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[13:03:46] <MattyMatt> I don't think so, I just want to remove multiples of 360 leaving the float remainder
[13:05:01] <MattyMatt> so I don't have needless rotations when I do G0 A0 when A is at 3600 degrees etc
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[13:14:40] <MattyMatt> MOD says it works with floats presumably like fmod() but my question is more about #5423. is that the absolute value of the A axis and will changing it cause any crazy feedrates etc in co-ordinated moves that follow?
[13:20:19] <cradek> that parameter is read-only. if you use your rotary mostly as an indexer, perhaps you want to use WRAPPED_ROTARY mode
[13:21:37] <MattyMatt> cheers I'll look into that
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[13:25:38] <MattyMatt> meh, that won't help, because I'm doing G1 A5400 X6 to mill a helix
[13:26:43] <MattyMatt> G92 A[#5423 MOD 360.0] will do the job until I hit the axis limit tho?
[13:28:36] <MattyMatt> axis limit is +/- 99999 so for 12 pulleys in a row that should do me
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[13:47:37] <r00t4rd3d> http://i.imgur.com/rdTsC.jpg
[13:49:17] <jdh> you are the one on the right?
[13:50:33] <r00t4rd3d> FIRE!
[13:50:59] * r00t4rd3d needs TP for his bunghole
[13:51:33] <r00t4rd3d> im gonna cut that in oak.
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[13:56:29] <jdh> you could cut it in platinum.
[13:56:53] <jdh> maybe find a rich 12 year old to buy it?
[13:58:00] <r00t4rd3d> I dont think my machine could cut platinum.
[14:00:16] <cradek> MattyMatt: just add a few more nines. you can turn 5400 degrees in wrapped mode, just use G91. or I guess you could just use G91 anyway if you don't care what the DRO says.
[14:02:55] <archivist> this is the problem I have mentioned before :)
[14:03:32] <cradek> maybe I'm not getting it
[14:03:44] <cradek> but I see several ways to handle it just fine
[14:07:45] <archivist> after n degrees/turns you need a simple go to nearest 0 which is a less than 180 degree move, not in wrapped mode though, in a free turning rotary there is NO limit
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[14:30:50] <MattyMatt> yeah that'd be most useful, putting it in the -180 to +180 range
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[14:32:27] <MattyMatt> or even an arbitrary centre, so if you're gonna resume at A=90 say, have a way to reset within 180 deg of that
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[15:51:10] <mrsun> an angle shelf in aluminium should be sufficient for a small milling machine shouldnt it? :)
[15:51:26] <mrsun> or what is it called?
[15:54:43] <Jymmm> a table?
[15:55:22] <mrsun> no ... the thingies you set on the table to get a right angle up =)
[15:55:26] <mrsun> with slots so you can clamp to it
[15:55:37] <JT-Shop> got a photo?
[15:55:52] <Jymmm> 123 blocks?
[15:56:04] <jdh> angle plate
[15:56:07] <mrsun> http://shop.otdtools.se/public/img/user/992275.jpg
[15:56:09] <syyl> an angle block
[15:56:10] <syyl> ..
[15:56:12] <syyl> eh
[15:56:14] <syyl> angleplate
[15:56:15] <syyl> sry
[15:56:15] <mrsun> yeah
[15:56:21] <mrsun> angle plate =)
[15:56:43] <syyl> https://dl.dropbox.com/u/24396704/aufspannwinkel/IMG_0618.jpg
[15:56:49] <syyl> i made that one from a casting :)
[15:56:57] <jdh> cool
[15:56:57] <Jymmm> a piece of string and 4000yo Egyptian Architect?
[15:57:30] <mrsun> i would so want to cast it in cast iron insted but do not have crucibles big enough :P
[15:57:34] <syyl> https://dl.dropbox.com/u/24396704/aufspannwinkel/2012-04-30_13-39-23_901.jpg
[15:57:44] <syyl> and that one is made from toolsteel, ground and bolted together
[15:57:58] <syyl> but it gets more use on the surface plate as on the milling machine
[15:58:56] <JT-Shop> nice one
[15:59:15] <mrsun> and i need to make a new "stand" for the column on the mill :/
[15:59:23] <mrsun> stupid seig cant do anything straight
[15:59:28] <syyl> also made those blocks...
[15:59:28] <syyl> https://dl.dropbox.com/u/24396704/aufspannwinkel/2012-05-18_13-34-06_876.jpg
[15:59:29] <syyl> :D
[15:59:44] <mrsun> have put "shim bolts" in it to be able to get it straight .. its like 1mm off from the front to back ...
[16:01:31] <tjb1> JT-Shop: Is that sodium nitrite/physan 20 have any antifreeze properties?
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[16:03:57] <Jymmm> tjb1: glycerin's do
[16:04:50] <Jymmm> Those jsut seem to control the inhibition of microbial growth
[16:05:20] <JT-Shop> and stop rust
[16:06:03] <Jymmm> salt peter
[16:06:13] <tjb1> Looks like im running without water in winter
[16:06:46] <jdh> why
[16:07:10] <JT-Shop> put a pond heater in the holding tank
[16:07:44] <tjb1> That would get pretty expensive to run all the time
[16:07:56] <JT-Shop> they are only a few watts
[16:08:05] <tjb1> I have a block heater here but I wonder how long it would take to heat the table
[16:08:21] <Jymmm> Glycols are in the alcohol family, and alcohol displaces water.
[16:08:22] <JT-Shop> you just want it above freezing
[16:09:00] <tjb1> This block heater is 1500w and about 6" long
[16:09:24] <jdh> that's a lot of heat.
[16:09:29] <Jymmm> 1500W is too much
[16:09:46] <Jymmm> you'll get a 600+ electric bill
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[16:10:36] <Jymmm> They have brake line anti-freeze
[16:11:02] <tjb1> I didnt say run it all the time, just before I go to use it
[16:11:06] <jdh> I got my ebay gas regs. They are really nice. Came with high pressure braided stainless hose and some 6000psi stainless quick-connects
[16:11:30] <tjb1> Jymmm: Thats all alcohol based and the concentration I need is nearly 50/50
[16:11:31] <Jymmm> tjb1: for what purposes?
[16:11:43] <tjb1> The water in my water table on the plasma
[16:11:47] <Jymmm> tjb1: then use glycol
[16:12:23] <Jymmm> tjb1: you can even get free glycerin from those bio-disel producers as it's a byproduct
[16:12:23] <tjb1> Glycol is flammable too :P
[16:13:16] <Jymmm> since when?
[16:13:24] <Jymmm> it's antifreeze
[16:13:43] <Jymmm> it's swet, and toxic, but not flammable
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[16:14:30] <tjb1> Was looking at ethylene glycol...
[16:14:37] <tjb1> :)
[16:14:51] <Jymmm> you could also run the pump periodically with a super tiny heater.
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[16:15:16] <Jymmm> I mean like 10-40W
[16:15:18] <tjb1> Are you talking about ethylene glycol?
[16:15:44] <Jymmm> tjb1: go light your radiator on fire
[16:15:54] <jdh> http://www.nexternal.com/armynavy/images/single-burner.gif
[16:16:02] <jdh> put that under it before you use it
[16:16:47] <tjb1> Jymmm: ethylene glycol has a flash point of 231.8F in a closed container and autoignition of 770F
[16:17:04] <Jymmm> tjb1: go light your radiator on fire
[16:18:59] <tjb1> Yeah and plasma arcs are near 50,000F....
[16:20:13] <TekniQue> 16:13:44 < Jymmm> it's swet, and toxic, but not flammable
[16:20:16] <TekniQue> it is too
[16:20:30] <TekniQue> given enough heat, it burns like any other alcohol
[16:21:01] <TekniQue> it's just not very volatile, that's why it doesn't burn readily when cold
[16:22:24] <Jymmm> I said glycol, tjb1 said ethylene glycol, not the same thing.
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[16:23:56] <JT-Shop> I think it is time for a Nathan's Famous and some cheese
[16:23:59] <tjb1> Are you talking about propylene?
[16:25:23] <tjb1> Propylene glycol is also flammable
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[17:03:52] <IchGuckLive> Hi all B)
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[17:32:39] <jthornton> http://imagebin.org/232504
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[17:35:00] <andypugh> That's getting quite detailed.
[17:35:10] <jthornton> thanks
[17:35:15] <jthornton> hows the arms race?
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[17:35:40] <andypugh> I am not sure, they may have given up for the time being, but it has rained all day.
[17:35:40] <jthornton> does it look like anything is missing?
[17:36:11] <jthornton> that will dampen their spirits
[17:36:19] <andypugh> No, they didn't get anything on any attempt.
[17:36:54] <jthornton> I mean from the thread calculator LOL
[17:37:35] <andypugh> One thing missing from that table. tip - to - root depth. Would be handy for G76. Note that isn't the same thing as nominal diameter to minor diameter.
[17:38:09] <andypugh> (One day I will manage a thread that works first time)
[17:38:25] <jthornton> ok, because of the nose radius of the cutting tool?
[17:38:59] <andypugh> Yes, and the tip rounding on the threads too. (or tip flat on these new-fangled thread stabdards)
[17:39:58] <jthornton> so h3 in this http://mdmetric.com/tech/thddat2.htm
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[17:43:27] <andypugh> Yes. Though I have a problem with that drawing as d and D are not as listed.
[17:43:55] <andypugh> (Major diameter is less than nominal diameter on any bolt that you measure)
[17:45:31] <jthornton> the machinery handbook has all the details about it... I'll look it up and add that info
[17:48:15] <jthornton> it even has metric bits http://imagebin.org/232507
[17:48:22] <jthornton> still working on metric taps
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[17:56:47] <skunkworks> heh http://imagebin.org/index.php?mode=image&id=232509
[17:56:57] <skunkworks> finally updated the laptop to 12.04
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[18:09:03] <awallin> running linux so you can run both xp and win7 in VMs? ;)
[18:09:30] <skunkworks> why not?
[18:09:32] <skunkworks> :)
[18:09:47] <skunkworks> I rarely use them - but nice to have
[18:13:21] <r00t4rd3d> did you get linuxcnc installed on that ?
[18:18:06] <ReadError> is that version of autocad from like 1995 ?
[18:19:32] <skunkworks> acad 12 :)
[18:19:38] <skunkworks> still works for what I need.
[18:19:49] <Jymmm> dos?
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[18:20:27] <skunkworks> r00t4rd3d, no... (well - On 10.04 I had sim.. Used it to write my comp for the K&T)
[18:21:01] <skunkworks> Jymmm, no - windows. - we started witht he dos version of 12 and switched to the windowws version
[18:21:13] <Jymmm> ah
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[18:21:39] <Jymmm> I woouldn't mind having a DOS version of acad
[18:22:04] <skunkworks> I have no clue if we still have it.
[18:22:33] <Jymmm> Oh, heh. I kinda meant if they ever released the dos version to the semi public domian.
[18:22:45] <Jymmm> or found one in a surplus store or somethng
[18:22:51] <Jymmm> or whatever ;)
[18:23:18] <Jymmm> skunkworks: Do you remember what it would run on? 486? 8MB ram?
[18:25:16] <skunkworks> I think they where 486's
[18:25:30] <skunkworks> might have even been 386's
[18:26:31] <andypugh> I used AutoCAD on a Mac very briefly. About 20 minutes before giving up.
[18:26:55] <andypugh> It was _hopelessly_ slow. A very, very, bad port that should never have been released.
[18:27:11] <r00t4rd3d> gotta please the fan boys!
[18:27:41] <tjb1> r00t4rd3d >:(
[18:27:44] <andypugh> It didn't please this one.
[18:27:59] <andypugh> The Mac version of Fusion is pretty slick though.
[18:28:32] <tjb1> andypugh: You know of anything better than draftsight that is free for mac?
[18:28:51] <andypugh> Fusion?
[18:29:01] <andypugh> It's not a full CAD package though
[18:29:10] <tjb1> I just need CAD not the parametric
[18:29:17] <andypugh> It's in the App store
[18:29:23] <tjb1> I thought Fusion was used to take DXF to solids?
[18:29:25] <skunkworks> being raised on acad make it hard for me to use any parametric drawing programs
[18:29:51] <andypugh> I started with Acad and was ecstatic to break away into paramteric
[18:31:08] <skunkworks> I have not given myself time..
[18:31:54] <andypugh> If you make a 3D model then you can't get the drawing wrong.
[18:32:10] <andypugh> You know, dimension to the wrong line for example :-)
[18:32:26] <tjb1> I thought my teacher said fusion worked off drawings and you couldnt draw in it but I guess he was wrong :) downloading now!
[18:35:52] <andypugh> I just made a cube :-)
[18:36:13] <andypugh> (drew a square in a sketch, dimensioned it, extruded it)
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[18:37:48] <tjb1> Someone asked how fusion was different from inventor
[18:38:21] <jdh> how is it different?
[18:38:33] <jdh> isn't it inventor fusion or something like that?
[18:38:38] <andypugh> It can't do nearly as much stuff. For example as far as I can see I can't re-dimension my sketch and have the extruded solid update.
[18:39:03] <jdh> that seems kind of lame.
[18:39:26] <tjb1> jdh there is inventor and inventor fusion
[18:41:07] <andypugh> It's for different things. It's what they call "direct modelling". It has differnet sorts of tools. For example I just grabbed a face of my cube and tilted it in two direction to make a funny shape. I would not have any idea how to make that shape in Inventor.
[18:45:16] <andypugh> Actually, it has more power than I thought. It just let me put a countersunk hole in my angled face.
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[18:54:50] <mazafaka> Do you know anyone using Unigraphics?
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[19:43:32] <Loetmichel> hmmm
[19:44:01] <Loetmichel> is there a way to tell the machine to do a reference move every x gcodes or so?
[19:44:47] <Loetmichel> my machine looses some steps in x... i know why, the "/(§$"(§&$ PMMA swarf... but i have to make another 3 parts before i have time to take her apart...
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[20:17:38] <r00t4rd3d> Basket weave side panel for a pbox Im doin:
[20:17:38] <r00t4rd3d> http://i.imgur.com/lQyfp.jpg
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[20:35:51] <r00t4rd3d> well that was brief
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[20:36:27] <Loetmichel> *grrr* *knack* there goes the last 6mm 2 flute TC bit... agail 25 eur for the bin :-(
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[20:37:11] <r00t4rd3d> Ive yet to break a bit
[20:37:21] <r00t4rd3d> all i cut is wood though
[20:38:16] <Loetmichel> pmma
[20:38:28] <r00t4rd3d> what is that?
[20:38:35] <Loetmichel> but i had some step loss and it just tried to mill 25mm deep in PMMA
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[20:50:08] <mazafaka> r00t4rd3d: What do you think of such mudflaps? http://a.d-cd.net/f2290au-960.jpg
[20:51:03] <r00t4rd3d> looks retarded to be honest.
[20:51:17] <r00t4rd3d> but what ever keeps you dry
[20:52:01] <r00t4rd3d> just the metal ones would look better but pretty much useless cause of the length.
[20:53:17] <mazafaka> and this one:
[20:53:23] <mazafaka> wait
[20:53:38] <r00t4rd3d> what is that material you have hanging ofd there?
[20:53:42] <r00t4rd3d> off*
[20:53:44] <mazafaka> http://a.d-cd.net/473e0au-960.jpg
[20:54:18] <r00t4rd3d> i can see the front one getting melted
[20:54:23] <mazafaka> plastic, cellophane
[20:54:27] <r00t4rd3d> stuck to the header
[20:54:50] <mazafaka> where, and what is hanging off there?
[20:55:06] <r00t4rd3d> off the bottoms of each fender
[20:55:12] <mazafaka> resin
[20:55:30] <r00t4rd3d> its not gonna flap in the wind?
[20:55:35] <mazafaka> no
[20:55:49] <mazafaka> it's bend and relatively thick
[20:55:54] <mazafaka> *bent
[20:56:15] <r00t4rd3d> what happens if you pop a wheelie?
[20:56:25] <r00t4rd3d> or a good bump
[20:56:42] <mazafaka> nothing, it would bend back off the wheel, or go between the wheel and fender
[20:58:03] <mazafaka> And this one is way more interesting, and left standard: http://a.d-cd.net/f5d10au-960.jpg
[20:58:17] <mazafaka> And RC models of bikes:
[20:58:32] <r00t4rd3d> you in germany?
[20:58:59] <mazafaka> no, i'm in Russia/
[20:59:03] <r00t4rd3d> whats that blue one?
[20:59:29] <r00t4rd3d> BISHOLTAY!
[20:59:32] <mazafaka> Ural M67 https://www.google.ru/search?q=Ural+M67&hl=ru&newwindow=1&client=firefox-nightly&hs=sH0&rls=org.mozilla:en-US:unofficial&prmd=imvns&tbm=isch&tbo=u&source=univ&sa=X&ei=K7-BUJKyDKrf4QTEy4HYDA&ved=0CCkQsAQ&biw=1280&bih=707
[20:59:35] <r00t4rd3d> im not sure how to spell it :D
[21:00:00] <mazafaka> 'BIS hotel' maybe...
[21:00:01] <r00t4rd3d> ahh the mighty ural
[21:00:24] <mazafaka> it's heavy, about 250 kg dry
[21:00:45] <r00t4rd3d> needs a paint job and side car
[21:01:00] <mazafaka> for wet ground words, and thoose 'metallic' Jupiter is about 180 kg dry
[21:01:15] <mazafaka> No, sidecar is wrong, although i have one
[21:02:11] <r00t4rd3d> lol
[21:02:15] <mazafaka> Ural will not be anyhow modified, it only will have a long seat.
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[21:04:02] <r00t4rd3d> I hope you have a german army helmet and vintage flying goggles for when you ride that.
[21:04:03] <mazafaka> Full-driven Ural M67: http://www.youtube.com/watch?feature=player_embedded&v=p1S0b4LTZFQ
[21:04:33] <mazafaka> I have this: http://a.d-cd.net/eb2732u-960.jpg
[21:05:24] <r00t4rd3d> you need this: http://www.buymotorcyclehelmets.com/assets/images/products/flatblackspike.jpg
[21:05:44] <r00t4rd3d> and these: http://www.aircraftspruce.com/catalog/graphics/13-06310.jpg
[21:06:13] <r00t4rd3d> and smoke a pipe
[21:06:34] <mazafaka> no, but the ones like 'little aviator' are good
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[21:08:52] <DJ9DJ> gn8
[21:09:28] <mazafaka> good night, too
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[21:11:52] <andypugh> Talking about flying helmets:
[21:12:36] <andypugh> http://www.guardian.co.uk/world/2012/oct/17/spitfire-planes-burma-excavation
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[21:43:24] <jp_> andypugh, how does the mesa uart hal driver work? is it for smart serial only?
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[22:59:59] <andypugh> jp_: Sorry, I am putting my garage back together. The answer is no, it just appears on 2 pins of an FPGA card and can go to anything. I have it communicating with an Arduino.
[23:00:34] <andypugh> (2 pins on 5i23, 2 wires, 2 pins on Arduino. That simple. 1Mbps over a distance of 2"
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[23:13:40] <r00t4rd3d> what does the arduino do?
[23:14:41] <r00t4rd3d> some kind of LCD readout?
[23:15:07] <Tom_itx> maybe it reads his hall sensors
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[23:24:37] <jdh> or resolvers.
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[23:38:32] <mutilator> so, two questions, why when idle my steppers get quite hot and make some awful noise>
[23:38:52] <alex4nder> what's your drive?
[23:39:08] <mutilator> i have a g540 controller and http://www.automationtechnologiesinc.com/docs/manuals/KL23H2100-35-4B.pdf
[23:39:15] <mutilator> those
[23:39:31] <alex4nder> yah, I have one
[23:39:58] <alex4nder> a g540 that is.. steppers get hot, and mine make a hissing sound at idle
[23:40:13] <mutilator> like hard to touch hot?
[23:40:41] <alex4nder> yup
[23:41:03] <mutilator> ok
[23:42:04] <mutilator> If your motor is rated
[23:42:04] <mutilator> at 3.5A or above you can safely not use a current set resistor; however, your G540 will not go into current standby mode which
[23:42:04] <mutilator> will result in increased motor heating.
[23:42:09] <mutilator> i see that in the docs for the 540
[23:42:24] <mutilator> but i didnt think increased heating would mean hard to touch
[23:44:23] <jdh> hot is normal
[23:47:52] <Tom_itx> my 203v's keep my steppers cool
[23:51:55] <jdh> does it do low current standby
[23:52:01] <Tom_itx> yes
[23:53:10] <mutilator> it does w/ a resistor aparently
[23:56:56] <mutilator> perhaps i could just jumper it
[23:56:56] <mutilator> wo resistor
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[23:56:56] <Tom_itx> maybe the resistor sets the current
[23:56:56] <mutilator> yea it does
[23:56:56] <mutilator> the doc says if the motor is 3.5A or more then you dont need it though
[23:56:56] <Tom_itx> for standby?
[23:56:56] <mutilator> oh
[23:56:56] <mutilator> maybe
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[23:56:57] <mutilator> and.. what is/should the pwm rate be set to??
[23:56:57] <mutilator> not sure what these settings arein the spindle configuration window
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