#linuxcnc | Logs for 2012-03-10

[00:00:04] <archivist> spotted dick
[00:00:22] <Mjolinor> sympathy for you
[00:00:33] <Mjolinor> oh, right, the pudding you mean
[00:01:10] <archivist> toad in the hole
[00:02:28] <Mjolinor> Anyway what about the swedish
[00:02:34] <Mjolinor> they have really odd names for food
[00:02:45] <Mjolinor> and they eat really odd food too
[00:03:07] <Mjolinor> surstromming being a good example, stupid name and how the hell anyone eats it will never know
[00:03:49] <ssi> everything the swedish say sounds weird
[00:03:55] <Mjolinor> http://www.youtube.com/watch?v=hOcSU3gPTYI
[00:04:02] <Mjolinor> that gives you soem idea of how it smells
[00:04:26] <archivist> http://www.youtube.com/watch?v=IfeyUGZt8nk
[00:05:15] <ssi> lord why
[00:06:52] <ssi> archivist: lolololol
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[00:12:22] * flyback bbl
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[03:42:40] <oxiredo_ro> hello
[03:42:49] <oxiredo_ro> hello
[03:43:45] <oxiredo_ro> I want to start making a CNC machine ( i have no experience with this). where can i start this ?
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[03:44:52] <jdhnc> credit cards are a good way to start.
[03:45:15] <oxiredo_ro> hmm...ok
[03:46:24] <jdhnc> what do you want to make with it? What materials? How much room?
[03:48:34] <oxiredo_ro> I want to start with a small one/room.
[03:48:54] <jdhnc> mill? router? lathe? 3d-printer?
[03:49:34] <oxiredo_ro> I sow on youtube a 3d printer, so, a 3d printer
[03:49:45] <oxiredo_ro> i dont know what are the other
[03:51:41] <oxiredo_ro> I realy dont know anything about CNC
[03:53:47] <Tom_itx> want a kit or scratch build one?
[03:54:09] <Tom_itx> i think mendlemax is supposed to be a good one
[03:54:22] <Tom_itx> talk to maxbots in #seattlerobotics if you want
[03:58:29] <oxiredo_ro> tnx fro help, I need to study this more. and also the "credit card issue" :)
[03:59:19] <djdelorie> makerbot and printrbot are other kits you could investigate
[03:59:38] <oxiredo_ro> k, tnx
[04:00:34] <Tom_itx> i'm not into the reprap stuff, i just know maxbots
[04:00:45] <Tom_itx> and that he was working on a kit
[04:01:35] <oxiredo_ro> and how do I integrate those machne with a PC
[04:01:48] <oxiredo_ro> can i make it via microcpntrollers..?
[04:01:59] <oxiredo_ro> or dedicated cnc controllers ?
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[04:02:43] <Tom_itx> some of them use dedicated controllers
[04:02:56] <Tom_itx> like i said, i don't know alot about em
[04:03:05] <Tom_itx> i'd suggest you visit with him
[04:03:22] <Tom_itx> or join #reprap
[04:10:11] <oxiredo_ro> good/night all ! :)
[04:12:25] <theos> night!
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[05:49:57] <ssi> what a pain in the ass
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[07:32:23] <ssi> well, I was successful in letting some of the smoke out of my lathe :D
[07:32:53] * Jymmm notes to NEVER let ssi touch ANYTHING.
[07:33:17] <ssi> it was a controlled smoke-letting
[07:33:19] <ssi> anticipated :)
[07:33:34] <Jymmm> NEVER EVER
[07:34:36] <ssi> no great loss :D
[07:35:01] <Jymmm> heh
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[07:59:02] <DJ9DJ> moin
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[08:52:09] <mrsun> hmm this is strange
[08:52:58] <mrsun> when moving positive on my X axis i get exactly 1mm if i set linuxcnc to go 1mm, moving backwards, first step i get exactly 1mm, second time i get 0.95mm, next im back at the 0 mark (so it moves 1.05mm aparently) ... then it goes over again, this is ONLY in the negative direction
[08:53:01] <mrsun> wth is up with that? :/
[08:53:10] <mrsun> ive got 1/8 microstepping if im not mistaking
[08:53:36] <mrsun> that calculates to 0.00125mm/step so it cant be that it just craps on one step its a buttload of stepps it has to not do for that to happend ...
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[08:56:55] <mrsun> have to go, but if anyone feels like trying to answer it ill be back later today =)
[08:57:21] <archivist> lead screw and backlash
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[09:03:47] <Mjolinor> any heekscad help here?
[09:03:57] <Mjolinor> http://www.youtube.com/watch?v=wThpU-XJ19o
[09:04:02] <Mjolinor> that's my starting point
[09:04:09] <Mjolinor> http://homepage.ntlworld.com/dknpower/clock.png
[09:04:13] <Mjolinor> thats my confusion
[09:04:53] <Mjolinor> as the letters are filled in when extruded I have to subtract them with the "cut one solid form the other"
[09:05:07] <Mjolinor> that works fine on the 9 but not on the 0 of the 10
[09:05:23] <Mjolinor> and why has hte 5 extruded as a shell and not a solid?
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[09:08:20] <archivist> the 5 probably not a joined polygon
[09:08:38] <Mjolinor> ok
[09:08:45] <Mjolinor> it shouldl be I think
[09:10:50] <Mjolinor> it looks like it is, how would I check?
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[09:12:43] <Mjolinor> could take a while comparing the start and end points of all the lines :o
[09:13:45] <archivist> zoom in on the 5 and move around till you see a slit
[09:14:09] <Mjolinor> done that cant see one
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[09:21:41] <Mjolinor> nope, zoomed into the maximum on every corner adn no discontinuities
[09:21:53] <Mjolinor> unless it is in the middle of a straight line but I cant see it
[09:22:14] <cncbasher> did u draw as a dxf ?
[09:23:05] <cncbasher> send it over let's take a look
[09:24:07] <cncbasher> check for other lines on the same layer too
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[12:24:30] <SadMan> in emcrsh.cc
[12:24:31] <SadMan> const char *pToolOffsetStr = "TOOL_OFFSET %d";
[12:24:38] <SadMan> shouldn't this be %f?
[12:24:45] <SadMan> since it's returning tool z offset
[12:26:12] <awallin> or is it the tool number?
[12:27:13] <SadMan> sprintf(context->outBuf, pToolOffsetStr, emcStatus->task.toolOffset.tran.x, emcStatus->task.toolOffset.tran.y, emcStatus->task.toolOffset.tran.z);
[12:27:23] <SadMan> oops, that's my modified version
[12:27:32] <SadMan> there was only .z before
[12:28:18] <SadMan> sprintf(context->outBuf, pToolOffsetStr, emcStatus->task.toolOffset.tran.z);
[12:30:17] <fragalot> 13:21 <slightlymad> pay rise?
[12:30:18] <fragalot> 13:21 <slightlymad> pay rise?
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[13:36:26] <Jymmm> This is so cute, that I can't even come up with a caption for it... http://i41.tinypic.com/2ykaqo1.jpg
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[13:55:56] <fragalot> Jymmm: sad panda is a bunny?
[13:57:24] <archivist> a small meal I suppose
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[14:57:33] <A2Sheds> whats the lowest cost power feed for a manual bridgeport?
[15:00:43] <jthornton> a milk shake can power mine for a while till I get tired
[15:04:23] <A2Sheds> jthornton, do you feEl like standing around someones garage for a few years? I'm pretty sure they can supply the milkshakes
[15:04:55] <jthornton> too busy standing around in my shop :)
[15:05:00] <A2Sheds> heh
[15:05:37] <jthornton> my guess is a used but good one would be the lowest cost
[15:06:11] <A2Sheds> I have an old Cincinnati vertical mill for sale, somebody asked about a power feed for the table
[15:07:07] <jthornton> Enco, Griz and other chinese importers would have the cheapest ones
[15:07:56] <A2Sheds> a shop near me was selling those, 75% came back for warranty issues
[15:08:19] <jthornton> the other 25% were shot on sight?
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[15:08:25] <A2Sheds> hehe
[15:09:02] * jthornton heads back out to the shop
[15:23:31] <ssi> JT-Shop: in the shop yet? :D
[15:23:49] <JT-Shop> yep, draining the plasma tank :)
[15:24:03] <ssi> I played the power game last night
[15:24:15] <ssi> I was hesitant to use the VFD, so I tried to power it up using a static
[15:24:18] <JT-Shop> who won?
[15:24:23] <ssi> mostly the lathe
[15:24:30] <ssi> the static wouldn't kick on
[15:24:47] <ssi> so I grabbed a little 1hp 3ph motor that I have and tried to make a rotary converter
[15:24:56] <ssi> got that working
[15:25:02] <JT-Shop> cool
[15:25:14] <ssi> flip the breaker, motor comes on, turn on the master on the lathe, and I get a red light on the control, and nothing else
[15:25:20] <ssi> plus... smoke from a filter :D
[15:25:23] <ssi> even the rotary did it
[15:25:48] <ssi> meanwhile the static was on the wall clackin away sounding all unhappy
[15:25:54] <ssi> so I shut it back down and hooked it up with the VFD
[15:26:18] <ssi> same thing... only this time the filter that was smoking actually caught on shitting fire
[15:26:33] <ssi> so I removed all the filters out of the power enclosure
[15:26:43] <ssi> and realized that the interface encloseure was open, and there's an interlock
[15:26:46] <ssi> so I closed that and tried again
[15:26:49] <ssi> this time I got much more
[15:26:54] <JT-Shop> I did the same after smoking one or two
[15:27:08] <ssi> more lights on the control, control fans spinning
[15:27:13] <JT-Shop> cool
[15:27:14] <ssi> now it just sits there and blinks "COLLET OPEN" at me
[15:27:23] <ssi> I'm guessing it won't budge until I have air attached
[15:27:27] <JT-Shop> blink back
[15:27:47] <JT-Shop> yea, no air, no coolant, no no no and you don't run
[15:27:55] <ssi> coolant too?
[15:27:57] <ssi> how do it know? :(
[15:28:17] <JT-Shop> mine has a float switch in the coolant tank, and the oiler and and and
[15:28:22] <ssi> bluhhhh
[15:28:29] <ssi> what do you run for coolant in yours
[15:29:13] <JT-Shop> Valcool VPTech
[15:29:40] <ssi> oil based?
[15:30:08] <JT-Shop> water soluble looks like blue toilet water when fresh
[15:30:15] <ssi> ah ok
[15:30:28] <JT-Shop> only bad thing is it doesn't taste like beer
[15:30:33] <ssi> I was hoping to use straight oil based coolant,
[15:30:37] <ssi> but because of the capacity and the price
[15:30:40] <ssi> I may end up reneging on that
[15:30:53] <JT-Shop> I think cradek uses neat oil in his
[15:30:58] <ssi> neat oil?
[15:31:00] <ssi> is that an actual name?
[15:31:05] <ssi> or just a descriptive adjective :D
[15:31:14] <JT-Shop> you don't cut it with anything
[15:31:21] <ssi> Neatsfoot oil is a yellow oil rendered and purified from the shin bones and feet (but not the hooves) of cattle
[15:31:35] <JT-Shop> not the same thing lol
[15:31:37] <ssi> teheheheh
[15:31:48] <ssi> Neat cutting oils are fluids usually based on mineral oils and used for cutting without further dilution i.e. as supplied by the manufacturer
[15:32:01] <JT-Shop> so you just drip it onto the part as you cut instead of flooding
[15:32:15] <ssi> what do you usually cut oils with?
[15:32:31] <ssi> I use mobilmet out of a hand bottle, and I really like the stuff
[15:32:52] <JT-Shop> is it straight from the bottle?
[15:33:08] <ssi> the way I've been using it, yes
[15:33:12] <ssi> I put it in a little hand oil can
[15:33:17] <ssi> and squirt it directly on my parts
[15:33:26] <ssi> but it's pretty viscous for flood coolant
[15:34:48] <ssi> I mostly don't want water soluble coolant because I don't like the way it rots
[15:34:50] <JT-Shop> which mobilmet do you use
[15:34:51] <ssi> heh
[15:35:05] <ssi> I'll have to go check
[15:35:20] <JT-Shop> I see a bunch to choose from...
[15:36:36] <ssi> 426
[15:38:37] <JT-Shop> I think I'll get a gallon for the BP knee mill
[15:38:50] <ssi> I've been pretty happy with it so far
[15:38:53] <ssi> makes parting much easier
[15:40:00] <JT-Shop> cool, parting is a pain on the old Samson manual lathe
[15:40:12] <JT-Shop> I need a scatter shield for it...
[15:42:05] <JT-Shop> wonder if something like this http://www.mcmaster.com/#squirt-bottles/=glpxka would be better than a cheap leaking oil can
[15:42:22] <ssi> ok so...
[15:42:25] <ssi> oh jeez
[15:42:32] <JT-Shop> wow
[15:42:43] <ssi> yea that'd be pretty good
[15:42:53] <ssi> also
[15:42:53] <ssi> http://www.mcmaster.com/#mobilmet-oil/=glpyd8
[15:42:57] <ssi> that's why I have 426
[15:43:01] <ssi> because it's what mcmaster carries :D
[15:43:19] <JT-Shop> I just ordered it :)
[15:43:35] <ssi> 55 gal drum of it is $1020
[15:43:45] <ssi> :(
[15:43:49] <ssi> your lathe hold 9gal like mine?
[15:44:12] <JT-Shop> 30-35 gallons
[15:45:05] <JT-Shop> 30 gallons, just looked
[15:46:58] <ssi> holy crap
[15:47:32] <ssi> hm I wish I knew which oil cradek was using
[15:47:55] <JT-Shop> he told me once but I could not find it anywhere
[15:48:21] <JT-Shop> but I'm sure if we keep calling cradek he will pop in and tell you
[15:49:30] * JT-Shop tries to remember the second most important thing to do today
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[15:57:20] <ssi> if you say his name three times, he appears?
[15:57:24] <ssi> cradek cradek cradek
[15:58:35] <ssi> btw the backside off all the boards in this GE control is freakin WIRE WRAPPED
[15:58:44] <ssi> http://a2.sphotos.ak.fbcdn.net/hphotos-ak-ash4/431058_808115768072_71107655_35459254_823586676_n.jpg
[15:58:47] <ssi> terrifying
[16:00:04] <JT-Shop> wow
[16:00:45] <JT-Shop> I think that only works when you call Peter 3 times
[16:01:01] <ssi> mesa peter?
[16:01:06] <JT-Shop> yea
[16:01:09] <ssi> pcw pcw pcw
[16:01:51] <ssi> I bought some barstock to make extension holders with
[16:01:55] <ssi> not too terrible spendy
[16:02:31] <ssi> know of a good source for t-bolts for those, or will I have to make them too?
[16:02:49] <ssi> mcmaster to the rescue, eh
[16:02:50] <JT-Shop> only source I've seen is Hardinge
[16:03:06] <JT-Shop> I've not found them anywhere and gave up looking
[16:03:06] <ssi> http://www.mcmaster.com/#square-head-tooling-component-t-slot-bolts/=glq7qu
[16:03:12] <ssi> dunno if those'll work
[16:03:56] <JT-Shop> didn't see them before
[16:06:03] <JT-Shop> do you have any T bolts to copy from?
[16:07:49] <JT-Shop> 91622A116 might work
[16:08:16] <ssi> I have a couple holders coming that'll have t bolts
[16:08:25] <ssi> I think all the holders I have now are C10 style and have the integral T
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[16:19:36] <joe9> with the latency test, the max jitter (servo thread) is 7404 ns and the base thread is 7482 ns. Is that within limits?
[16:19:45] <joe9> alex4nder: any thoughts, please?
[16:19:56] <joe9> just checking out linuxcnc on a new pc for the first time.
[16:20:32] <JT-Shop> there are no limits per say, but that is excellent if you have let it run for a few hours
[16:20:50] <joe9> no, that was just for 5 mins or so. will let it run for longer.
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[16:52:41] <joe9> i have the ubuntu live cd, but it dose not recognise the raid partititons. I cannot seem to find the mdadm executable in /sbin or /bin.
[16:52:54] <joe9> linuxcnc ubuntu live cd, I mean.
[16:53:13] <joe9> sudo which mdadm does not return anything
[16:53:27] <joe9> aptitude install mdadm says that the package is already installed.
[16:53:39] <ssi> just a path issue then?
[16:53:44] <ssi> try find / -name mdadm
[16:53:48] <ssi> will take awhile
[16:53:53] <ssi> or find /usr -name mdadm
[16:54:16] <joe9> ok, thanks.
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[17:23:37] <psha> joe9: mdadm is in sbin
[17:23:39] <psha> not in bin
[17:23:52] <ssi> that explains that :D
[17:23:53] <psha> usually /sbin/mdadm
[17:24:21] <Mjolinor> is there a "usually" I generally find it pretty random :)
[17:24:34] <Mjolinor> it is always in the last palce you look that's for sure
[17:26:49] <ssi> /sbin, /usr/sbin, etc are typically binaries that only root is expected to ever use
[17:26:59] <ssi> so only root typically has them in path
[17:27:25] <ssi> if you're the kind of user that likes to do everything with sudo, you might consider putting them in path
[17:29:28] <joe9> in my case, I have a non-working installation on the disks (raid1). I do not know if aptitude looks at that to see if mdadm is installed.
[17:29:34] <joe9> but, I do not see mdadm binary in /
[17:30:22] <joe9> "a volume with software packages has been detected" it says, when I start using the livecd.
[17:30:42] <joe9> is it common? is it referring to the livecd volume or the volume in the disks.
[17:31:18] <joe9> when I try to partition the disks, it lists the "ext4, ext3 .. " filesystem, but not a raid-1 partition there.
[17:33:28] <psha> joe9: raid1 just looks like ordinary partition
[17:33:34] <psha> but with mdadm superblock in the end
[17:34:02] <joe9> oh, ok. but, if I partition the disk as ext4, it will not be a raid-1 disk anymore. correct?
[17:34:26] <joe9> psha: the raid-1 disks show up as "unknown filesystem" but, with the flags "boot, raid" setup
[17:35:52] <psha> it depends on your luck :)
[17:36:00] <psha> probably it won't kill superblock in the end
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[17:53:56] <hatch789> hey guys, I'm just using my X&Y axis right now but my g-code has some Z stuff in it. Is there an easy way (a command or something?) to ignore the Z axis follow errors?
[17:54:57] <jthornton> nope
[18:04:43] <hatch789> so what do I do then with my g-code? somehow remove all z commands?
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[18:08:37] <jthornton> yea, or change your configuration
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[18:25:05] <Mjolinor> http://www.youtube.com/watch?v=aMqM13EUSKw
[18:25:08] <Mjolinor> is that for real?
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[18:46:10] <psha> Mjolinor: deformations looks real
[18:47:02] <psha> but i don't know if golf ball may survive so serious deformations without breaking
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[19:13:06] <jthornton> this one is real http://www.youtube.com/watch?v=00I2uXDxbaE&feature=related
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[19:27:10] <DJ9DJ> re-namd
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[19:45:03] <Jymmm> 2" wide cloth tape other than duct tape?
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[19:51:34] <fragalot> Jymmm: pattex power tape!
[19:51:34] <fragalot> :3
[19:51:43] <Jymmm> ?
[19:52:20] <fragalot> cloth tape other than duct tape
[19:52:35] <Jymmm> what is pattex
[19:54:17] <fragalot> brand
[19:54:22] <fragalot> makes glue & stuff
[20:01:30] <Jymmm> where do you usually find it?
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[20:13:19] <Tecan> where do i set the /usr/src/linux-headers-3.0.0-13-lowlatency path ?
[20:13:33] <Tecan> configure: error: version.h not found - Is the kernel headers package installed ?
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[20:18:38] <Tecan> in the configure i guess
[20:24:44] * JT-Shop loves reading questions that I have no clue as to what they are talking about :?
[20:36:29] <archivist> yet another doing it the hard way probably
[20:37:04] * archivist drinking coffee listening to the lathe screw cutting
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[20:42:11] * djdelorie worries about his math...
[20:42:14] <gene77> Anybody home?
[20:42:33] <djdelorie> scope says 7 divs at 50 mV/div across a 5 mR current sense resistor
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[20:42:53] <djdelorie> for about 5 mS
[20:43:14] <gene77> My A axis isn't running, need .hal help I think
[20:43:33] <djdelorie> am I really pushing 70 AMPS into the motor?
[20:45:20] <djdelorie> winding resistance is 5.6 R, at 60V I shouldn't be able to push more than 10 amps...
[20:46:56] <djdelorie> data logged from within the controller show a more reasonable 8 amps peak
[20:47:13] <JT-Shop> hi gene77
[20:47:27] <gene77> 10.7142857143 amps to be exact
[20:47:35] <gene77> hi, hal help?
[20:47:44] <JT-Shop> hi Hal
[20:48:04] <JT-Shop> what's up gene77
[20:48:19] <djdelorie> I'm thinking, it's triggering off just when I switch the drive transistors from "forward" to "active brake" and I'm reading back EMF
[20:48:52] <gene77> axis isn't moving, command its not getting thru the hal meter past the tp & enable signals
[20:49:11] <gene77> A axis isn't moving, command its not getting thru the hal meter past the tp & enable signals
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[20:52:25] <JT-Shop> is it connected just like the rest of the axes?
[20:53:00] <gene77> I think so, and it was working a couple months ago
[20:53:34] <gene77> and I don't recall changing anything except the spindle stuff since
[20:54:07] <gene77> WHat keyboard keys are supposed to jog it?
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[20:57:33] <gene77> section says [], what is the next step looking with hal meter?
[21:00:46] <JT-Shop> ok, so it worked then you changed something in your hal file and it broke?
[21:00:59] <JT-Shop> is it axis 4?
[21:01:55] <gene77> ISTR that is probably when, stepconfig got the direction logic wrong. No, its axis 3 in the hal meter menu
[21:03:14] <gene77> And the "[]" keys are being ignored now.
[21:03:46] <JT-Shop> stepper?
[21:04:10] <gene77> yes, motor is enabled and locked
[21:04:41] <JT-Shop> do you see any steps change on axis 3 stepgen in the watch window?
[21:04:47] <gene77> no
[21:06:19] <JT-Shop> does the A axis show up on the DRO?
[21:06:34] <JT-Shop> assuming your using the Axis GUI
[21:06:36] <gene77> yes
[21:06:41] <gene77> yes
[21:07:09] <JT-Shop> what happens when you do a MDI command for the A axis
[21:07:51] <archivist> gene77, jog is [ and ] iirc
[21:08:28] <gene77> USRMOT: ERROR: invalid command
[21:08:29] <gene77> Linear move in MDI would exceed joint 3's positive limit
[21:08:40] <gene77> wtH?
[21:08:59] <gene77> lemme recheck the .ini!
[21:10:39] <gene77> its spec'd as angular
[21:10:57] <JT-Shop> yea, something is not quite right
[21:11:36] <JT-Shop> what is ISTR?
[21:11:58] <gene77> with min and maxlimits=0, does that not mean continuous?
[21:12:44] <gene77> I Seem To Recall John
[21:12:55] <gene77> :)
[21:20:45] <gene77> I just tried the MDI g0a-10, and got the same msg, negative limit
[21:22:56] <gene77> so apparently having the limits set at 0,0 is a no-no?
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[21:33:28] <djdelorie> hmmm... what is an average "fast" inches/sec for a cnc cutter?
[21:33:55] <djdelorie> check my math: 100 oz-in torque driving a 3/8-16 screw, pushes 314 lbs ?
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[21:36:47] <gene77> for a ball screw maybe
[21:37:44] <djdelorie> I mean, without considering friction. Just want to make sure the ratios aren't backwards or my math is missing a step
[21:39:30] <gene77> my math isn't as good as yours DJ. With a 425 on a 10 tpi acme, and a 17/42 gear down, I can hit 155 lbs on my z axis when the motor is tapped out
[21:40:12] <gene77> lots of friction in the acme
[21:40:29] <djdelorie> gear down increases torque to 1050, yes?
[21:41:18] <djdelorie> is that 425 oz-in?
[21:41:32] <djdelorie> and I think the diameter of the acme screw needs to be known too...
[21:42:45] <gene77> yes, but may not be getting full current, its an 8 wire motor, wired in series, and getting about 2.34 a phase, says 5 amps running unipolar
[21:42:49] <JT-Shop> gene77: IIRC for angular set the limits to some insane value for + and -
[21:43:19] <mrsun> archivist, but in one direction it works fine, 4 steps in one direction, each is exactly at 0, 4 steps in theo ther direction first is exactly spot on (have backlash compensation) then next is 0.95, next is 1.05, next is 0.95 .. all in the same direction, i do not change direction at any time
[21:44:30] <djdelorie> my screw rod is "local hardware store" so I probably have even more friction :-)
[21:44:34] <JT-Shop> djdelorie: are you calculating stepper torque?
[21:44:42] <archivist> mrsun, drunk thread on the screw
[21:44:53] <djdelorie> at the moment, I'm trying to figure out a realistic limit to winding current for my firmware
[21:44:57] <mrsun> archivist, heh ? :P
[21:44:58] <gene77> I was told that a 0 disables that, and its been zero zero for a long time John, years even. This however is the master-rt branch 2.60.something
[21:45:01] <JT-Shop> LOL
[21:45:06] <gene77> chuckle
[21:45:30] <JT-Shop> yea, I may be full of shit about that and not know it :/
[21:45:31] <archivist> mrsun, technical term for a bad helix on a thread
[21:45:36] <djdelorie> I mean, if I run all three motors at "peak current" at the same time, I'd need a 4 KWatt power supply...
[21:45:38] <Jymmm> http://i44.tinypic.com/4keova.jpg
[21:45:51] <mrsun> archivist, but shouldnt that show up in both directions?
[21:45:56] <djdelorie> ...but that's way overkill for the *actual* power needs of a small cnc table.
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[21:46:43] <JT-Shop> so just for shits and grins put a number in your limits and see if your A takes off
[21:46:44] <archivist> mrsun, I would expect so but depends on the error
[21:47:04] <mrsun> i was more thinking if its due to linuxcnc skipping some steps cause its "close enough" =)
[21:47:14] <djdelorie> I have 2 amps available, if I limit to 0.6 amps per motor, that's (in theory) still 30 oz-in per motor. Or I could limit to 2 amps per motor, and monitor the power supply volts as well
[21:47:25] <archivist> mrsun, that does not happen
[21:47:36] <mrsun> archivist, ok good i got that sorted atleast =)
[21:47:40] <gene77> that reminds me of a rancher south of Rapid City, called up the wind cave rangers and told them to come and get their 8 buffalo that were demolishing his haystacks.
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[21:48:19] <gene77> He did that for a week, but finally said to come and get 7. They were there an hour later.
[21:49:12] <JT-Shop> arggg, there is nothing in the manual about setting limits to 0 for an angular axis
[21:49:25] <archivist> I just did my first cnc lathe internal thread, about time too one might say
[21:49:54] <djdelorie> where do you put the limit switch on a mobius strip ?
[21:49:55] <JT-Shop> single point thread or tap?
[21:50:05] <archivist> single point
[21:50:08] <JT-Shop> cool
[21:50:49] <archivist> dont adjust motor speed while threading..something missed a beat
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[21:51:28] <JT-Shop> I don't touch anything while threading :)
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[21:53:56] <gene77> and of course that linuxcnc shutdown crashed the box, requiring a power cycle, but yes John, that did indeed fix it
[21:55:45] <gene77> Now I need to go find some 1" 5/16 USS bolts, drill a couple of holes in a plastic bowl, set the table in it on edge, and fill it up with k1 for coolant. ;-)
[21:56:31] <DJ9DJ> gn8
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[22:04:34] <JT-Shop> Gene I thought I remember Andy saying something about that on the forum a while back
[22:06:50] <gene77> there was a way to make a rotary axis continuous, once, maybe not anymore
[22:12:55] <JT-Shop> well setting it to wrapped rotary it goes 0 - 359.999 degrees
[22:13:44] <archivist> rotary does need some work to make it universally useful
[22:15:01] <archivist> one needs to be able to do multiple revs AND go to the nearest 0 deg instead of winding back
[22:15:25] <JT-Shop> make is sexy and maybe psha will work onit
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[22:18:41] <JT-Shop> I'm hoping I find a bad termination in the plasma power box :/ here goes
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[22:20:54] <djdelorie> archivist: I can imagine trying to "home" a lathe, and having it spin for minutes...
[22:22:25] <JT-Shop> ah sweet a loose wire
[22:22:43] <Tecan> why does hal have to be enabled ?
[22:24:07] <Tecan> i got a rt kernel without one for 11.04
[22:24:39] <Tecan> rtai is requiring it to compile the kernel modules
[22:30:18] <archivist> djdelorie, I have a slow rotary on the 5 axis and returning to the start point is "slow"
[22:31:03] <djdelorie> I meant, if it had to "unwind" a couple thousand rotations to "home" a rotary axis, that would be... less than useful.
[22:31:42] <archivist> currently a rotary axis can be like that
[22:31:55] <archivist> grmbl
[22:32:47] <gene77> grmbl is mild
[22:33:41] <archivist> now where are my bore gauges...even internal calipers
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[23:11:02] <hatch789> what is the mdi command to zero the axis right where they are now?
[23:14:12] <GoSebGo> hatch789: i dont know off the top of my head, but i bet the answer is somewhere in this doc: http://www.linuxcnc.org/docs/2.5/html/gcode/coordinates.html
[23:15:24] <JT-Shop> hatch789: http://linuxcnc.org/docview/2.5/html/common/User_Concepts.html
[23:16:14] <JT-Shop> hatch789: do you wish to set the machine origin or an offset?
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[23:25:08] <hatch789> just to zero X&Y right where it is. not home them ...already homed
[23:25:50] <cradek> typically you'd use the Touch Off function, but you can do it in mdi as well; check section 3.2 in the link from Seb
[23:27:39] <JT-Shop> cradek: did you see ssi asking what cutting oil you used?
[23:27:48] <cradek> no
[23:28:01] <cradek> the stuff I have in the lathe I don't think is available anymore
[23:28:08] <cradek> it's some soybean-based thing
[23:28:22] <JT-Shop> I never could find it when you told me what it was
[23:28:35] <Tom_itx> whale blubber
[23:28:38] <cradek> yeah I think they're gone
[23:28:46] <cradek> I can't remember the name of it
[23:29:21] <JT-Shop> I did find some soy oil based stuff but by that time I had all ready gone with ValCool
[23:29:43] <Tom_itx> maybe for food processing equipment?
[23:30:14] <cradek> it smells kind of like french fries
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[23:30:22] <cradek> very inoffensive smell
[23:31:07] <JT-Shop> maybe I got dyslexic and connected the wires backwards from the plasma tip voltage... I guess I'll take it back apart again :/
[23:31:40] <JT-Shop> too bad the ValCool doesn't taste like beer...
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