#linuxcnc | Logs for 2012-05-08

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[00:00:21] <JT-Shop> THCAD-10 High isolation A-D, 10V 69
[00:00:29] <JT-Shop> or THCAD-10 High isolation A-D, 10V 69
[00:00:55] <JT-Shop> tjb1: what plasma cutter do you have?
[00:01:08] <tjb1> powermax 45
[00:02:23] <JT-Shop> is that a HF start torch?
[00:02:40] <JT-Shop> that a Hypertherm?
[00:03:57] <tjb1> yes hypertherm, hf I'm not sure
[00:04:12] <JT-Shop> mine is a 1250
[00:05:39] <JT-Shop> oh, that is the new generation of plasma from them
[00:05:45] <tjb1> Now known as the powermax 85?
[00:07:07] <JT-Shop> yea, I think so but the 85 is improved from the 1250
[00:07:25] <JT-Shop> I think better consummable life and better cut
[00:07:57] <tjb1> Im making a table as my senior project
[00:08:14] <tjb1> The THC isn't required but I would rather make one instead of buying one
[00:08:17] <JT-Shop> not trying to influnce you but have you seen my plasma?
[00:08:31] <tjb1> Not that I know of
[00:09:11] <JT-Shop> couple of shots here http://gnipsel.com/shop/plasma/plasma.xhtml
[00:09:46] <JT-Shop> more here http://s47.photobucket.com/albums/f163/johnplctech/Plasma%20Cutter/
[00:09:58] <JT-Shop> you making a water table?
[00:10:13] <tjb1> Yes
[00:10:40] <JT-Shop> you only need some sodium nitrite and pysan 20 and H2o for coolant
[00:11:05] <tjb1> http://a4.sphotos.ak.fbcdn.net/hphotos-ak-ash4/414905_3554298172111_1112377031_33394573_527938187_o.jpg
[00:11:11] <tjb1> that is the latest drawing I have
[00:12:05] <JT-Shop> sodium nitrite is 0.05% by weight and follow directions on physan20
[00:12:39] <JT-Shop> how are you going to drive the axis?
[00:13:05] <tjb1> rack and pinion
[00:13:10] <tjb1> like the cncrouterparts setup
[00:13:30] <JT-Shop> nice, I went with timing belts
[00:13:57] <tjb1> All your motion done on the (teflon?) parts?
[00:14:14] * Jymmm suspects delrin
[00:14:18] <JT-Shop> yea, you just have to clean them from time to time
[00:14:30] <JT-Shop> Jymmm: might be right
[00:14:52] <Jymmm> JT-Shop: that'll be a first, or amybe even a second.
[00:14:55] <JT-Shop> tjb1: btw Frameworld slides are better than 80/20 slides
[00:14:58] <JT-Shop> LOL
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[00:15:17] <tjb1> frameworld slides?
[00:15:55] <JT-Shop> yea, they make the same stuff 80/20 make but better stuff IMHO
[00:16:00] <Jymmm> JT-Shop: ever play with Potassium Nitrate?
[00:16:23] <tjb1> They cheaper than 80/20?
[00:16:31] <tjb1> All the extrusions in my drawing came out for $404
[00:16:45] <tjb1> table is 113" long by 73" wide
[00:17:08] <JT-Shop> maybe some fulminate of mercury from time to time
[00:17:32] <JT-Shop> you just have the three pcs of extrusion right?
[00:18:00] <tjb1> 4, 2-3030 113", 1-3030 73" and 1-1530 12"
[00:18:25] <Jymmm> JT-Shop: Do you think if I soaked cotton in a water based Potassium Nitrate solution and let it dry, it would lower the flashpoint of the cotton?
[00:18:36] <JT-Shop> why not mount the Y rails onto the tubing? save some money
[00:18:54] <JT-Shop> Jymmm: dunno, give it a try and let me know
[00:18:56] <tjb1> Easier to mount rack and crs onto the extrusion
[00:19:06] <tjb1> and easier to adjust the rails
[00:19:06] <Jymmm> JT-Shop: lol, bastard!
[00:19:13] <JT-Shop> yea
[00:19:53] <tjb1> Rather not drill all the holes in the rails and try to keep it square while welding the frame together
[00:20:03] <JT-Shop> seems simpler to just screw the rail to the tubing
[00:20:20] <JT-Shop> gotcha
[00:20:52] <tjb1> The way the extrusion is mounted, I can shim it if needed
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[00:20:57] <JT-Shop> you done a lot of fabricating with steel?
[00:20:57] <tjb1> Hopefully...
[00:21:09] <tjb1> Do quite a bit at home
[00:21:16] <tjb1> nothing big like this
[00:21:43] <JT-Shop> ok, I was going to give you a tip but you must know if you have done quite a bit
[00:22:07] <tjb1> I can always learn
[00:22:08] <JT-Shop> I do it for a living sometimes
[00:22:12] <tjb1> Go ahead and share
[00:22:23] <Tom_itx> when you're not building cannons
[00:22:25] <JT-Shop> tack the whole thing together before you weld anything up
[00:22:29] <JT-Shop> yea
[00:22:35] <tjb1> I thought about that
[00:22:50] <tjb1> just enough to support itself then it would resist the warping more
[00:22:51] <JT-Shop> and triple check for square before welding up
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[00:23:15] <djdelorie> do not look at spark with remaining eye
[00:23:35] <JT-Shop> if your welding hot do a little in each area so you don't build a warp into the tubing
[00:23:41] <JT-Shop> LOL
[00:24:10] <tjb1> Ive had the arc eye from reflection on snow...
[00:24:12] <JT-Shop> you can't have enough clamps, straps etc holding it in place when you put it together
[00:24:51] <tjb1> Had to be the worst 2-3 days of my life
[00:25:12] <Jymmm> JT-Shop: build upside down???
[00:25:38] <JT-Shop> yea, know what you mean but I got my lesson in the stack of a destroyer installing the splitters and I looked the other way but the walls were aluminum...
[00:25:54] <JT-Shop> but, where did that come from
[00:25:57] <tjb1> What is the best way to accurately measure long distances to keep everything the same
[00:26:41] <JT-Shop> for frames I just use a good steel tape measure... one that has not been dropped and the end it bent you know
[00:26:52] <JT-Shop> s/it/is
[00:27:16] <djdelorie> and never "tighten" the grommets on the end of a steel tape measure
[00:27:26] <Jymmm> for squareness?
[00:27:29] <Jymmm> djdelorie: heh
[00:27:31] <tjb1> Gonna take all the 2x2s and square them all to the correct length at school
[00:27:52] <JT-Shop> hard to say Jymmm I'd tack each side together first then add the rest
[00:28:10] <Jymmm> JT-Shop: k
[00:28:37] <Jymmm> You can measure diagnally to check for squareness too
[00:28:46] <JT-Shop> you have to
[00:29:15] <JT-Shop> I'd tack one side together then put the second one on top of it and tack it together
[00:29:38] <JT-Shop> lots of clamps and scrap to hold everything in the same place
[00:29:55] <tjb1> Alright
[00:30:13] <tjb1> Any comments on the design beside the extrusions?
[00:30:29] <tjb1> I have about 3 months to get the design ironed out
[00:30:37] <JT-Shop> looks straight fwd to me
[00:31:00] <JT-Shop> I'd move the long lower braces to the sides though
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[00:31:25] <tjb1> the 2 running down the middle?
[00:31:27] <JT-Shop> so the sides are very secure top to bottom
[00:31:29] <JT-Shop> yea
[00:31:46] <tjb1> http://a6.sphotos.ak.fbcdn.net/hphotos-ak-ash4/470045_3554316092559_1112377031_33394587_642516070_o.jpg
[00:31:57] <tjb1> http://a2.sphotos.ak.fbcdn.net/hphotos-ak-snc7/479311_3554322372716_1112377031_33394591_958638915_o.jpg
[00:32:08] <tjb1> http://a2.sphotos.ak.fbcdn.net/hphotos-ak-ash4/456620_3554314972531_1112377031_33394585_493994145_o.jpg
[00:32:34] <Jymmm> man those are a pita, keeps asking to download instead of viewing them
[00:33:07] <JT-Shop> holy crap are you using 3x3 for the Y axis rails?
[00:34:00] <tjb1> Yes
[00:34:24] <JT-Shop> bit overkill don't you think with the steel tube under it?
[00:34:27] <tjb1> Its also going to be a router in the future
[00:35:00] <JT-Shop> steel under it...
[00:35:26] <JT-Shop> I'd make the Y axis sleds longer for a router
[00:35:27] <Jymmm> I dont see any place for energy chain, limit switches, etc
[00:35:58] <JT-Shop> chow time here
[00:35:59] <tjb1> JT-Shop: The black bearings?
[00:36:12] <tjb1> Jymmm: Im not that good at solid works yet
[00:36:41] <Jymmm> tjb1: no, not drawing them in, just longer than travel to allow for mounting them
[00:37:05] <Jymmm> if you have 48" travel, should add an extra 4-6"
[00:37:19] <Jymmm> as example
[00:37:24] <tjb1> Well the long axis is 113" and I only need 96
[00:37:40] <Jymmm> ok =)
[00:37:46] <tjb1> I think the side is 60? and I need 48
[00:37:59] <Jymmm> wait, how long are the slides?
[00:38:13] <tjb1> I have 3 inductive sensors that I am going to mount on the carriages and put a pickup at each end
[00:38:18] <tjb1> The long extrusions?
[00:38:24] <Jymmm> the black things
[00:39:13] <Jymmm> 4" 6" 10" long
[00:39:14] <Jymmm> ?
[00:39:17] <tjb1> 8"
[00:39:21] <tjb1> Had to look it up, sorry
[00:39:24] <Jymmm> =)
[00:39:48] <tjb1> http://www.cncrouterparts.com/extended-linear-carriage-with-abec-7-bearings-p-35.html?cPath=21
[00:39:57] <tjb1> The z-axis ones are around 4"
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[00:42:04] <tjb1> I could probably go with 1530 on the long axis but that would make things a little too tight where the rack has to bolt on
[00:45:06] <tjb1> I need some help with installing ubuntu
[00:45:59] <tjb1> "No root file system is defined."
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[01:27:42] <tjb1> Anyone have recommendations for a tig welder under $2k?
[01:35:02] <Tom_itx> a small miller
[01:35:19] <Tom_itx> i'd get one big enough to have a good pulsed feature
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[01:41:13] <tjb1> http://www.harrisweldingsupplies.com/miller-maxstar-200-sd-tig-welder-903701.aspx
[01:42:51] <Tom_itx> Pulsed TIG (GTAW-P) with DX and LX models
[01:43:37] <Tom_itx> get a foot pedal too
[01:45:08] <tjb1> what do you think about - http://www.harrisweldingsupplies.com/lincoln-precision-tig-225-tig-welder-ready-pak.aspx
[01:46:40] <Tom_itx> get one that has the features you need. i got a miller mig because i felt the wire feeder was built better than the lincoln
[01:47:02] <Tom_itx> they're equivalent overall i'd say
[01:47:49] <Tom_itx> try one out
[01:48:01] <Tom_itx> see if it does what you need
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[01:54:38] <tjb1> What exactly do the pulse features do
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[01:58:57] <Tom_itx> gives you better control on things like thin aluminum etc
[01:59:07] <Tom_itx> so you don't blow thru
[02:01:49] <tjb1> brb
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[02:05:51] <tjb1-linux> alright got it.
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[02:09:20] <tjb1-linux> where do you edit the notifications that pop up in ubuntu?
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[02:59:28] <alex4nder> hey
[03:00:04] <jdhNC> hey!
[03:00:15] <alex4nder> how's it?
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[03:04:51] <jdhNC> good question. How is it?
[03:05:35] <alex4nder> it's good over here
[03:05:36] <Valen> theres two kinds of pulse, high and low frequency
[03:05:45] <alex4nder> except for some stepper stalling
[03:05:46] <Valen> bah too late
[03:06:02] <Valen> alex4nder: moar amps
[03:06:11] <alex4nder> probably not going to happen.
[03:06:38] <alex4nder> but I'm already going 2x the speed the machine is rated for. so now I'm just being greedy
[03:06:53] <jdhNC> greed is good!
[03:07:06] <alex4nder> ok gordon
[03:08:07] <alex4nder> it's pretty close to milling time.
[03:08:57] <Tom_itx> miller time! did somebody say it's miller time?
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[08:01:05] <DJ9DJ> moin
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[08:01:59] <Loetmichel> mornin'
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[11:08:32] <Jymmm> Nice little CNC project... http://www.youtube.com/watch?v=1pHCfXtRYCA
[11:19:46] <pjm__> lol, love the product placement, very amusing!
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[11:56:35] <Jymmm> Could toss on a 1x4 on the cnc and cut those out pretty quickly.
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[14:21:59] <r00t4rd3d> are they done yet?
[14:23:04] <r00t4rd3d> what would be the use of a wooden chain, lock up your wooden leg?
[14:23:16] <jdhNC> because you can?
[14:23:34] <r00t4rd3d> paint it metalic and take it to the truck mud bog
[14:23:44] <r00t4rd3d> I got this!
[14:25:01] <r00t4rd3d> make a wooden ball and attach it to your ankle
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[15:08:31] <djdelorie> r00t4rd3d: wooden chains were the traditional test of carving skills. If you have to cut links in half and glue them back together, you've failed.
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[15:30:44] <joe9> is there something to get the current tool radius?
[15:31:02] <joe9> some gcode, perhaps.
[15:31:49] <cradek> http://www.linuxcnc.org/docs/html/gcode/overview.html#sub:numbered-parameters
[15:33:47] <joe9> cradek: thanks.
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[16:15:05] <jdhNC> nifty collection all in one place. I've seen most of those in their own sections.
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[16:53:56] <Jymmm> Nice little CNC project... http://www.youtube.com/watch?v=1pHCfXtRYCA
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[16:54:32] <IchGuckLive> hi all around
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[16:56:02] <TekniQue> Jymmm: how many times are you going to spam this? it's in no way CNC related
[16:56:38] <Jymmm> TekniQue: bunches and bunches
[16:56:51] <TekniQue> is it your video?
[16:57:39] <TekniQue> or are you affiliated with PC?
[16:57:57] <Jymmm> TekniQue: and it IS cnc related if you write the g-code and run it on your cnc machine, if you dont care for it just ignore it
[16:58:55] <TekniQue> doesn't bother me
[16:59:07] <TekniQue> I found it entertaining to watch
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[17:11:43] <syyl_> nice video Jymmm
[17:11:49] <syyl_> that guy can explain pretty good
[17:12:07] <Jymmm> and speak really fast too! lol
[17:14:30] <Jymmm> right around 1:02 and 1:04 you can see the under the bottom teflon fabric, does that look like a seperate anvil from the the rest of the green metal or just sanded off? http://www.youtube.com/watch?v=Wfta0vYyeL0
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[17:15:20] <Jymmm> or something else? Like another piece of tape or something?
[17:16:59] <Jymmm> If you look at around 1:34, you can see the end I think
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[17:34:48] <adb> hello
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[17:52:43] <IchGuckLive> adb: B)
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[19:13:54] <TekniQue> http://www.youtube.com/watch?v=hG0WfvW805Y
[19:13:56] <TekniQue> nice
[19:14:07] <TekniQue> supposedly, sub $10000 price tag!
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[19:18:34] <andypugh> I'll take two!
[19:21:50] <JT-Shop> seems like my commutating reactor what ever the heck that does gets tired when warm and makes my drive trip out...
[19:22:48] <andypugh> Sounds like an inductive filter to smooth comutation spikes.
[19:23:56] <JT-Shop> it's the three phase thing in the middle wth the blue orb on top http://imagebin.org/211569
[19:24:17] <andypugh> http://www.theconstructionindex.co.uk/the-digger-blog/view/how-to-build-a-cat-6030
[19:27:22] <andypugh> Yes, that looks like an inductor. Though it's difficult to see what the problem could be. Phase-phase shorts seem unlikely.
[19:28:07] * roycroft is happy he's taking his time pondering the new cnc gear
[19:28:23] <roycroft> my thinking is evolving from getting a zen toolworks cnc router to doing a cnc retrofit on my x3 milling machine
[19:28:34] <JT-Shop> after it gets warm ie I run it a short while the voltage starts to fluctuate and the drive trips out
[19:28:36] <roycroft> i *think* there will be enough y-axis travel to accomodate my pcb milling needs
[19:28:45] <roycroft> that's what i still have to ponder a bit
[19:33:33] <andypugh> JT-Shop: I wonder if it is shorting internally?
[19:33:44] <JT-Shop> what does a commutating reactor do?
[19:34:21] <JT-Shop> I don't see any signs of problems like smokey spots or anything
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[19:36:18] <andypugh> JT-Shop: I think it's a filter.
[19:36:47] <archivist> JT-Shop, are the reactor and the drive both original fitment
[19:37:03] <JT-Shop> yes all original
[19:37:37] <JT-Shop> there is a big difference on voltage measured on each side of it
[19:37:41] <archivist> any shorted turns will cause over heating and loss of resonance/filtering
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[19:39:16] <JT-Shop> on the transformer side the voltage is about 390vac between legs and on the drive input side it is 650vac
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[19:40:54] <archivist> without a circuit/schematic /me is guessing
[19:43:13] <JT-Shop> the schematic just shows it inbtween the transformer and the infeed module of the drive
[19:54:14] <r00t4rd3d> http://i.imgur.com/Pdbu5.jpg
[19:54:21] <r00t4rd3d> friggin paint job took me a week
[19:55:43] <andypugh> JT-Shop: Do you have a scope? I would guess it is a filter which squashes and broadens PWM.
[19:56:32] <JT-Shop> pwm to the infeed power module?
[19:56:42] <archivist> I wonder if the 650v he measures is just an artifact of the waveform
[19:57:00] <JT-Shop> or squashes it from the drive it self
[19:57:33] <r00t4rd3d> ReadError
[19:58:12] <alex4nder> yoh
[19:58:46] <alex4nder> joe9/ReadError: how are your PCB milling projects going? I'm about to build something myself.
[19:58:59] <JT-Shop> andypugh: yes I have a scope
[19:59:14] <alex4nder> r00t4rd3d: cool, what're you going to use that setup for?
[19:59:29] <r00t4rd3d> i dunno
[20:00:42] <r00t4rd3d> cut stuff
[20:01:21] <alex4nder> nice
[20:02:10] <andypugh> JT-Shop: Those 650v spikes (on the motor side?) could be produced by the commutation of the motor. (ie, rather like a magneto)
[20:02:22] <jdhNC> r00t: how are you going to hold work to the table?
[20:02:40] <r00t4rd3d> i dunno
[20:02:42] <r00t4rd3d> lol
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[20:02:57] <r00t4rd3d> painters tape
[20:03:03] <alex4nder> haha
[20:03:06] <archivist> drill holes in the paint
[20:03:13] <r00t4rd3d> dont say that!
[20:03:18] <alex4nder> how flat is the table?
[20:03:23] <alex4nder> and what's it made out of?
[20:03:29] <r00t4rd3d> mdf
[20:03:33] <alex4nder> ah
[20:03:35] <r00t4rd3d> so its pretty flat
[20:03:40] <archivist> angle grind the paint off to find a surface to drill into
[20:03:51] <alex4nder> angle grinding MDF would be interesting
[20:04:17] <r00t4rd3d> who makes table clamps?
[20:04:24] <roycroft> it would be dusty, that's for sure
[20:04:27] <archivist> the user often
[20:04:37] <jdhNC> just get a belt sander and some 60grit to rough up the paint
[20:04:46] <r00t4rd3d> or how can i setup a clamping mechanism
[20:04:50] <roycroft> or a heat gun and a scraper
[20:05:02] <roycroft> what are you clamping?
[20:05:03] <alex4nder> or a pound of butter and some ducttape
[20:05:13] <r00t4rd3d> probably wood for starters
[20:05:18] <jdhNC> get some MDF, screw it to the table, replace as needed.
[20:05:29] <roycroft> fixed clamp positions?
[20:05:38] <r00t4rd3d> that would be nice
[20:05:46] <r00t4rd3d> or maybe holes i could move them around
[20:05:49] <archivist> drill a pattern of holes
[20:05:54] <roycroft> there are drill press table vice grips
[20:06:02] <Jymmm> MDF CAN be drilled and tapped on the surface, not on the edges
[20:06:07] <roycroft> you could drill holes in the mdf, insert tee-nuts from below, and use those
[20:07:10] <JT-Shop> andypugh: the 650vac is on the infeed side of the drive ie the main supplies
[20:07:16] <roycroft> like this, but find some for a lot less money:
[20:07:19] <roycroft> http://www.amazon.com/DELTA-17-922-9-Inch-Drill-Press/dp/tech-data/B00004Y9ES
[20:07:32] <JT-Shop> the DC buss is steady as in rock steady at 600vdc
[20:08:52] <andypugh> I think roycroft means: http://www.screwfix.com/p/tee-nuts-m8-x-17-5mm-pack-of-10/89734 but http://www.screwfix.com/p/insert-nut-type-d-m6-pack-of-50/59937 from the top would also work.
[20:09:05] <JT-Shop> the basic circuit is 240vac mains > three phase transformer > 390vac > commutating reactor > infeed module
[20:09:17] <Jymmm> r00t4rd3d: http://www.woodcraft.com/Family/2003911/INCRA-TTrack-and-TTrack-Plus.aspx
[20:09:19] <roycroft> yes, that's the tee-not part
[20:09:33] <roycroft> track clamps would also work well
[20:09:41] <r00t4rd3d> http://www.thingiverse.com/thing:17740
[20:09:47] <r00t4rd3d> who has a 3d printer?
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[20:10:01] <Jymmm> r00t4rd3d: http://www.rockler.com/product.cfm?page=21276&rrt=1
[20:10:09] <roycroft> so would this likely be suitable as a jog controller: http://tinyurl.com/6lmefss ?
[20:10:19] <Jymmm> r00t4rd3d: http://www.rockler.com/gallery.cfm?Offerings_ID=21276&r=5&TabSelect=Details
[20:10:43] <r00t4rd3d> eww thats nice
[20:11:30] <archivist> JT-Shop, have you got capacitors after the reactor, can you measure the values
[20:11:31] <roycroft> and would it make sense to use it in the 8-way configuration, with x,y,z, and a axes all controlled by one joystick?
[20:11:34] <Jymmm> r00t4rd3d: you can run 2 or 3 tracks in an I or H config as example, they sell individual parts/tracks
[20:11:57] <JT-Shop> archivist: no it goes straight to the infeed module
[20:11:58] <roycroft> or does it make more sense to use 2 of them, each in a 4-way configuration?
[20:12:36] <Loetmichel> re @ home
[20:12:44] <Jymmm> r00t4rd3d: I'd see if they have a "sliding rail" option to you can position the clamps anywhere along the tracks
[20:13:00] <Jymmm> r00t4rd3d: kinda a track on/in a track thing
[20:13:53] <r00t4rd3d> im gonna buy that setup
[20:13:58] <Jymmm> move the sliding track where you want it and lock it down, then move the clamps where you want them and tighten
[20:14:25] <roycroft> kind of like a gantry system
[20:14:27] <Jymmm> r00t4rd3d: you might want extra t-nuts too in case they dont give you enough with a kit
[20:14:32] <archivist> JT-Shop, googling commutating reactor shows up some stuff and pdf's to read
[20:15:03] <Jymmm> r00t4rd3d: http://www.rockler.com/product.cfm?page=22075&rrt=1
[20:15:08] <Jymmm> never saw that before
[20:16:17] <Jymmm> interesting http://www.rockler.com/gallery.cfm?Offerings_ID=22163&r=5&TabSelect=Details
[20:16:31] <Jymmm> found here http://www.rockler.com/product.cfm?page=22163&rrt=1
[20:16:51] <Jymmm> nice lil fence stop
[20:16:58] <Jymmm> just flips out of the way
[20:17:13] <r00t4rd3d> http://www.rockler.com/product.cfm?page=21387&site=ROCKLER
[20:17:19] <JT-Shop> archivist: I can't find anything relating to simodrive 611 communating reactor just general stuff that makes no sense to me :(
[20:17:22] <r00t4rd3d> that one comes with the clamps
[20:17:53] <Jymmm> r00t4rd3d: they have kits, look at everythign first befor eordering would be my suggesstion
[20:18:09] <Jymmm> r00t4rd3d: one kit http://www.rockler.com/product.cfm?page=21276&rrt=1
[20:18:28] <archivist> JT-Shop, it is saturated except during the switching bottom of article http://en.wikipedia.org/wiki/Mechanical_rectifier
[20:18:43] <JT-Shop> most stuff seems to be about vfd's
[20:19:03] <archivist> yup its controlling the current
[20:19:52] <r00t4rd3d> jymm that kit comes with no clamps and is 31 bucks, the one i linked is 33 and comes with 2 clamps
[20:20:38] <JT-Shop> mine must be a line/commutation reactor
[20:20:56] <archivist> JT-Shop, it limits peak current
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[20:21:21] <archivist> As commutating reactor limiting peak current, suppressing reactions on ...
[20:21:46] <roycroft> the replacement controller board for my touchscreen is scheduled to be delivered today
[20:21:51] * archivist not downloading pdfs just looking at search results
[20:21:55] * roycroft is anxious to see if it works properly
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[20:32:27] <andypugh> roycroft: I don't think you want to jog with a digital joystick. Why not use a PS2 controller?
[20:34:53] <roycroft> i want to be able to jog on the console
[20:35:08] <Loetmichel> hmmm, anyone tried to use a trackball to jog?
[20:35:09] <Loetmichel> ;-)
[20:35:22] <roycroft> yes, i've seen jog controllers with trackballs
[20:35:26] <Loetmichel> a big one from a arcade machine
[20:35:30] <roycroft> i don't know anything about arcade games
[20:35:37] <Loetmichel> with a whiteball from billard as trackball ;-)
[20:35:43] <roycroft> nor much about jog controllers for cnc machines
[20:35:54] <roycroft> i'm assuming i want something that's just a bunch of switches
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[20:36:32] <roycroft> which is why i'm asking questions :)
[20:36:55] <andypugh> I would be tempted to dismantle a PS2 controller. That gives you a nice analogue joystick with a switch, plus several other bits of potentially useful IO.
[20:37:52] <roycroft> well i think i can get a ps2 controller really cheap at the goodwill
[20:37:58] <roycroft> so that might be a good place to start
[20:38:33] <andypugh> Indeed. Have a look at: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Simple_Remote_Pendant
[20:38:39] <roycroft> and i figured on mocking up my console unit out of plywood until i get the configuration worked out the way i want, before i make it out of metal
[20:38:46] <andypugh> You can buy them brand-new really chaep.
[20:39:02] <JT-Shop> I like that page :)
[20:39:04] <roycroft> keep in mind i want both a console with complete control and a pendant
[20:39:10] <andypugh> Why would you want to jog from the console anyway?
[20:39:23] <roycroft> if i'm standing at the console doing stuff i might want to jog from there
[20:39:27] <roycroft> without having to grab the pendant
[20:39:34] <roycroft> also, the pendant might break some day
[20:39:49] <roycroft> by its nature it's more vulnerable than the console
[20:40:28] <roycroft> keep in mind also that i've never operated a cnc machine before
[20:40:37] <roycroft> and my perceived needs/wants may change as soon as i start using one
[20:40:50] <JT-Shop> lol
[20:43:36] <joe9> i have a while loop in my sub and the linuxcnc seems to be going to an interminable loop while backplotting (when I load the gcode file). is there any way to get more information what is going on?
[20:43:51] <roycroft> i wasn't thinking of proportional speed control on the joystick/joypad itself
[20:44:07] <JT-Shop> sounds like you have an infinate loop to me
[20:44:43] <roycroft> i was thinking about something that had simple switches at the extremes of each axis, and a rotating switch to set speed to 1x, 10x, 100x, for some value of x
[20:44:57] <JT-Shop> pastebin the while loop
[20:45:01] * roycroft obviously needs to do more research on that part
[20:45:23] <JT-Shop> or gain some experiance...
[20:45:43] * JT-Shop has found my needs vary from machine to machine
[20:46:19] <roycroft> both, i'm sure
[20:46:31] <joe9> JT-Shop: ok, thanks.
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[20:47:30] <andypugh> joe9: There is a magic-comment that might help. (AXIS, stop)
[20:47:40] <JT-Shop> lol
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[20:51:11] <andypugh> joe9: I think that "ESC" or possibly Crl-C will break the loop too.
[20:52:44] <DJ9DJ_> gn8
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[20:54:41] <joe9> andypugh: thanks.
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[21:08:50] <Guest91334> hi, im having troubles printig as PDF a leader program in ClassicLadder, Linuxcnc always crash, the program has 100 rungs, i dont have problems with small programs of 10 rungs or less. how can i print my program for documentation?
[21:20:35] <JT-Shop> Guest91334: can you get a screen capture of the ladder? I know it is a PIA but it might work
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[21:29:52] <alex_joni> http://www.theregister.co.uk/2012/05/08/nevada_license_google_car/
[21:31:42] <Guest91334> of all the leadder?, what i was able to do is to install the windows version of classicladder, open there the .clp program and print all from there, but i really think that is sad
[21:33:39] * JT-Shop never thinks it is sad when free stuff works even if you have to work around something
[21:34:01] <JT-Shop> of course you could dive in and fix the classicladder code and then you would be happy
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[21:43:34] <JT-Shop> I wonder if a GP line reactor will work in place of the Siemens one?
[21:45:41] <JT-Shop> http://www.automationdirect.com/adc/Shopping/Catalog/Drives/AC_Drive_%28VFD%29_Spare_Parts_-a-_Accessories/AC_Line_Reactors/LR-4025
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[22:04:47] <andypugh> JT-Shop: Expensive to find out, unfortunately. And it could be that the fault is in the blue-bit.
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[22:09:30] <JT-Shop> andypugh: that one is not expensive unless your referring to blowing up the whole kit
[22:10:07] <andypugh> Well, $142 seems a fair chunk of cash if the problem is somewhere else.
[22:10:41] <JT-Shop> the siemens ones I found were $2k and not the exact match...
[22:11:01] <JT-Shop> do you think it would run if I bypassed it?
[22:12:45] <JT-Shop> I'd have to say it is either the line reactor or the input module, but when running I see voltage drops on the output from the line reactor but not on the input side
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[22:17:01] <andypugh> I think if you bypassed it you would risk damage to the drive. Though, from the symptoms, I would expect the drive to fault immediately rather than when the reactor ets hot.
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[22:18:50] <JT-Shop> yea, I think your correct
[22:20:08] <Tom_itx> what's a line reactor do?
[22:20:15] <Tom_itx> is it isolation or just what?
[22:22:32] <Tom_itx> nevermind
[22:22:36] <Tom_itx> i read about it
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[22:23:33] <Tom_itx> http://www.cosphi.com/line-load-reactor-applications.html
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[22:26:23] * JT-Shop grabs a beer and reads the link
[22:26:44] <djdelorie> sounds like a fancy name for "inductor"
[22:27:22] <Tom_itx> http://en.wikipedia.org/wiki/Line_reactor
[22:27:47] <JT-Shop> I wonder how they make the so called CNC phase converters?
[22:27:58] <djdelorie> link?
[22:28:27] <JT-Shop> for?
[22:28:34] <djdelorie> an example CNC phase converter
[22:28:46] <JT-Shop> I'd have to google one for you
[22:28:50] * djdelorie can do that
[22:28:55] <Tom_itx> http://en.wikipedia.org/wiki/Rotary_phase_converter
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[22:30:10] <Tom_itx> all part of the magic of ac circuits
[22:30:44] <andypugh> I made a rotary convertor which doubled the voltage too. It very nearly worked.
[22:30:45] <JT-Shop> yea, good thing we didn't go with DC or China would not have any copper
[22:30:48] <djdelorie> if it's like my generator, they adjust the stator field power to keep the voltage in spec
[22:31:33] <djdelorie> my propane generator has - they claim - more accurate voltage than the street power
[22:32:10] <Tom_itx> it it probably a dc generator with an electronic phase control
[22:33:06] <JT-Shop> http://www.powertransformer.us/aclinereactor.htm
[22:33:06] <djdelorie> if you're going to use electronics, you don't need the spinning bits at all
[22:34:04] <djdelorie> the driver chip in my BLDC controller is designed to run three-phase inverters...
[22:34:13] <Tom_itx> gawd i wish my boards would get here
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[23:18:18] <r00t4rd3d> what kinda boards?
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