Back
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[00:30:11] <Jymmm> Nope not at all, just kinda shows how much faith they put into them.
[00:34:40] <kwallace2> Way off topic - I have a homemade CDI on a KDX250 that I built a hand full of years ago. I was looking at it recently and it looks like it was poorly designed or I didn't follow the plan well. It uses a flywheel coil to charge a capacitor, and another coil to trigger an SCR. What are the major issues with getting the gate triggering correct?
[00:36:17] <andypugh> They tend to trigger with a hall sensor now, which might be more accurate
[00:36:28] <Jymmm> kwallace2: WHAT THE HELL?! We're talking missile defense systems and you bring up machining type stuff?!
[00:36:44] <Jymmm> ;)
[00:36:48] <andypugh> No, offroad bike stuff
[00:40:05] <kwallace2> I'm hoping to keep the current triggering since it is already in place.
[00:40:58] <kwallace2> Oops, diner. bbl
[00:41:05] <kwallace2> dinner
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[00:53:21] <andypugh> probotix: I think your stuff showed up on the mailing list. If you are Len.
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[01:00:52] <andypugh> Night all
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[06:24:15] <Jymmm> To all that have order items from HK with lithium batteries, including HT's:
http://www.hongkongpost.hk/eng/publications/notices/2013/20130910a/index.htm
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[06:35:14] <JesusAlos> yep
[06:36:38] <JesusAlos> I received a linuxcnc update
[06:37:54] <JesusAlos> pre0.4781
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[06:51:24] <_DJ_> moin
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[07:06:20] <archivist> ew spot the failure point
http://www.thermulan.com/html/toggle_press.html
[07:08:35] <archivist> I was researching the maker after finding 261288115455 on ebay, which looks a good idea
[07:12:06] <JesusAlos> have a problem with "Realtime delay error"
[07:12:10] <JesusAlos> I put latency test result in BASE_PERIOD value
[07:12:17] <JesusAlos> but the error still appear
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[07:27:45] <JesusAlos> help about please?
[07:28:07] <mrsun_> join 0 following error, is that due to the base thread period ?
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[07:46:54] <mrsun_> when talking servo motors, if i want a servo motor comparable with a stepper with 1.8Nm holding torque, what do i need to go for then? :) i know torque and holding torque isnt the same but steppers are specced in holding torque? :/
[07:48:57] <The_Ball> Can I make HAL talk i2c on a high speed IO? (mesa)
[07:50:09] <The_Ball> This
https://github.com/cdsteinkuehler/LinuxCNC-RepRap/blob/master/components/I2C.comp seems to suggest so
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[07:59:28] <Loetmichel> mornin'
[08:05:15] <JesusAlos> hi
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[10:11:26] <jthornton> morning
[10:19:38] <JesusAlos> hi
[10:36:01] <_DJ_> hi
[10:37:07] <archivist> hiho hiho its off to work we go
[10:37:58] <archivist> I googled and it seems no one has made a digimatic hal module
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[11:27:02] <JesusAlos> ping #linuxcnc
[11:31:09] <Poincare> pong
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[12:09:52] <archivist> not seen one of these in the wild for a while fleabay 251356563301
[12:19:25] <t12> neat
[12:20:31] <archivist> I got one at the ex army store, rather sensitive
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[15:16:01] <JesusAlos_> _
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[17:18:02] <IchGuckLive> hi all B)
[17:18:06] <_DJ_> hi
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[17:25:20] <IchGuckLive> hi probotix are you related to the company or just onwn one of this
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[19:18:14] <archivist> updated the screw error page with todays measurements
http://www.archivist.info/cnc/screw_error/
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[19:24:41] <andypugh> Do you have any slip blocks?
[19:25:27] <archivist> yes but very workshop grade
[19:25:48] <kwallace2> Hello. This is way off topic. I have a Tek T935A oscilloscope. It powers up but doesn't sweep. If I try to fix it, would it be worth the effort?
[19:26:21] <archivist> I also have some glass blocks for checking micrometers (has an inch in the set)
[19:27:32] <archivist> andypugh, its within a thou once travelling so in tolerance probably considering the machine "quality"
[19:27:40] <andypugh> kwallace: It is probably a very good oscillosope. But do you need a very good oscilloscope? I know I don't, I just need to see if a pin is wiggling at approximately the right rate.
[19:28:09] <CaptHindsight> with the accuracy of the DTI being .00024" how much does the metal expand and contract over temp or even by shining a lamp on it?
[19:28:39] <archivist> CaptHindsight, I let it stand a bit before I did any measuring
[19:30:03] <archivist> and came back to 0 to see if any real change after
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[19:31:29] <archivist> just a test of the method really with a write up for some users that need to diagnose their problems
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[19:32:33] <archivist> kwallace, only thing with some tek scopes is the in house chips
[19:32:45] <kwallace2> andypugh: I don't remember where I got the scope from, but I'm sure it was free. It has been sitting on a shelf for many years and I'd like to figure out if I should recycle or fix it. I have a scope in my office but it would be nice to have one in the shop too.
[19:32:53] <CaptHindsight> kwallace: those probably sell for ~$100 in working condition on ebay
[19:33:40] <andypugh> I would suspec that a DSO-mini or the quad version would be perfectly adequate for shop use.
[19:35:04] <andypugh> I like my little Tek 336, except for the rather loud fan noise. But It's a lot more capable than I need, and even though it is relatively tiny, it is still less portable than I would like.
[19:35:06] <CaptHindsight> they also make for good backgrounds when being interviewed on camera
[19:35:24] <archivist> kwallace, that looks of a style that may have been made over here in Guernsey
[19:35:46] <archivist> the old Telequipment plant
[19:36:00] <archivist> fixable
[19:37:22] <andypugh> The 336 is like this:
http://www.komu.jp/336.html and about exactly the size of a sheet of A4 paper.
[19:38:03] <andypugh> I have no idea how much it cost to generate characters on the CRT back when it was new...
[19:38:27] <andypugh> Anyway, that's getting off topic.
[19:38:39] <archivist> the 7000 series had chr gens in them too
[19:41:09] <archivist> andypugh, thinking of slips etc, I have 3 1" a ring, the glass and a slip, and the comparators all say the slip is short
[19:41:29] <andypugh> kwallace2: I would say if you want to fix a broken thing for the sake of fixing a broken thing, then go for it. But if you want a shop-grade scope to check for step signalsetc, then:
http://www.ebay.com/itm/141061201300 look like a better idea.
[19:41:52] <CaptHindsight> https://www.sparkfun.com/products/12065 4 channel scope that uses a $5 ARM SOC
[19:42:02] <archivist> I would prefer the tek :)
[19:42:41] <andypugh> archivist: Yes, but perhaps not for slipping into your posket when you head out to the workshop...
[19:43:24] <archivist> I have a manky old Advance scope for outdoors
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[19:44:27] <kwallace2> I suppose it would not hurt anything to take the covers off and poke around.
[19:45:06] <archivist> it only hurts you if you touch the wrong bit :)
[19:45:35] <kwallace2> It took a while for the power LED to come on and it doesn't come on very brightly. Maybe power supply or bad caps?
[19:46:10] <kwallace2> Corroded contacts?
[19:46:19] <CaptHindsight> http://dx.com/p/dso150-avr-core-portable-2-1-glcd-digital-storage-oscilloscope-green-black-silver-234107 $39
[19:46:24] <archivist> kwallace, kurt has a manual
http://w140.com/tekwiki/wiki/935
[19:49:02] <CaptHindsight> http://www.youtube.com/watch?v=L9t72w-9fZE heh
[19:49:13] <CaptHindsight> Arduino Color TFT LCD Oscilloscope
[19:50:01] <kwallace2> archivist: That should come in handy. Thank you.
[19:51:22] <Tom_itx> rigols are popular as well
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[19:52:54] <Tom_itx> most of those cheap ones do 5Mhz or less
[19:53:06] <kwallace2> I wanted to use a solderless breadboard with an old motorcycle CDI on it, so I had to document the circuit before I took it apart. Now I have to redesign it. To do that I need a scipe in the shop, so now I have to fix the scope, to fix the scope I need ....
[19:53:37] <archivist> what...no spare scope!
[19:54:15] <kwallace2> And no probes either.
[19:54:49] <Jymmm> http://www.youtube.com/watch?v=xD6ghskNKa8
[19:55:01] <archivist> you could with "some care" and an a-d and a parallel port use halscope
[19:55:28] <archivist> some cheap people use a soundcard
[19:56:55] <archivist> kwallace, old tek may just need switches cleaning (use them a lot of times)
[20:00:20] <kwallace2> It looks pretty clean inside. The voltage select switch looks corroded though, so has seen some water.
[20:01:44] <kwallace2> Oops, actually it a switch that says HI/LO.
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[20:34:09] <andypugh> I wonder what the sequence of operations is to make these?
http://www.ebay.co.uk/itm/181234911775?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
[20:35:18] <andypugh> Possibly a job for two identical vices with a tiny gap between them.
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[21:08:37] <_DJ_> gn8
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[21:10:56] <kwallace> andypugh: You mean to make a tube, then split it?
[21:11:12] <andypugh> Basically yes.
[21:11:50] <andypugh> I can't decide if they drill the "softening" hole first then bore, or the other way round.
[21:12:11] <andypugh> I thought of just cutting very deep with a slitting saw. But how do you hold it to do that?
[21:12:40] <CaptHindsight> boring
[21:13:49] <kwallace> I would tend to make the tube, then make an insert so that the tube can be clamped while being slit. It looks like they made a shallow slit, then drilled the other side.
[21:14:11] <andypugh> My boring head came with a lot of sleeves, and a lot of boring bars. Sadly none of the sleeves suit any of the boring bars
[21:15:15] <kwallace> Slit and drill with insert.
[21:15:47] <andypugh> kwallace: Ah, yes, good idea. I can clamp a rod in the middle to support the drill.
[21:17:55] <kwallace> It just looks like that is how the eBay tubes where done.
[21:21:06] <andypugh> I am sure Wohlhaupter found a more expensive way to do it. Those will be hardened and ground too.
[21:26:55] <kwallace> Maybe rough the tube and hole while soft, with insert. Harden, then grind the ID and OD, add another insert and grind the slit?
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[21:27:40] <kwallace> I tried it and it works pretty well... in my head.
[21:28:57] <kwallace> I'm grabbing the good scope and going back to the shop.
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[22:03:25] <ries> afternoon all, anybody happen to know if there are any g-code intepeters are available, open source ofcourse. This to make simple visualisation of the created path
[22:08:00] <Optic> linuxcnc :)
[22:08:20] <tjtr33> kwallace, when you come back: cool, the Hoover (935). use to have one
[22:08:38] <ries> Optic: hehehe… yeaa, but then I have to walk to my machine each time I generate something on the desktop
[22:08:43] <tjtr33> ries google up SAI in linuxcnc ( stand alone interpreter )
[22:09:29] <Optic> toss it in a virtualbox vm :)
[22:11:17] <ries> Optic: mpbody would download that if I am going to open source it
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[22:16:31] <andypugh> There is SAI and also the Gremlin widget.
[22:17:05] <andypugh> (Gremlin may use SAI, I am not sure)
[22:17:54] <JT_Shop> what is SAI?
[22:18:13] <ries> That seems to by python… I am trying to create something where I dont have to compile for all operating systems so it will run
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[22:28:06] <tjtr33> ( stand alone interpreter )
[22:28:54] <tjtr33> and that tube collet? WEDM the slot , hole and 'hinge'.
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[22:32:03] <andypugh> Yeah, WEDM is the easy way, but I don't have one
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[22:35:22] <andypugh> Now, I have a feeling that there is a way to shift a jacobs taper with only a hammer, rather than use the special wedges... Any knowledge out there?
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[22:46:02] <ries> I just found
http://openscam.com, if that works then I don't have to handle the portion of compiling and disitrbution for various OSes..
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[23:03:43] <andypugh> I think awallin has done some G-code previewing stuff too.
[23:17:22] <ries> andypugh: I think he has been using the lib's from linuxcnc
[23:18:24] <ries> andypugh: I need to wrap my head around what route to take making this tool… for this item I just don't feel like doing the cross-platform build route and trying to keep things KISS
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[23:25:14] <The_Ball> jepler, hi mate, are you around?
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[23:48:22] <andypugh> Is this a gap-bed CNC lathe? That could be a nice combination:
http://www.ebay.co.uk/itm/COLCHESTER-MASCOT-CNC-LATHE-/300986631029
[23:50:44] <The_Ball> andypugh, nice, what do you think the reserve is at?
[23:51:04] <andypugh> Interesting question.
[23:51:45] <andypugh> It's not the lathe for me right now, but I have a friend who wants a nice big lathe for restoring 1900s trucks.
[23:52:33] <andypugh> If it does have a gap then it is a lathe with a 28" swing _and_ a 1600rpm top speed. Which is a rather special combination,
[23:53:22] <The_Ball> andypugh, you are talking about a removable part of the bed for swinging larger objects?
[23:53:30] <andypugh> Yes
[23:54:13] <The_Ball> looking at the mount point for the x ball screw it doesn't look removable
[23:54:40] <The_Ball> The support is too close to the chuck
[23:55:31] <andypugh> On the contrary, I can see no reason that it would stop there if there wasn't a gap piece.
[23:56:03] <andypugh> Normally the screw runs full-length and is driven from the headstock end.
[23:57:00] <The_Ball> andypugh, on a cnc lathe? On a normal lathe it's geared through the headstock sure, I don't know what I'm talking about though
[23:57:18] <andypugh> For really big stuff you would be using a face-plate
[23:58:30] <andypugh> It's a Colchester Mascot. That's a manual machine with a factory CNC conversion:
http://www.lathes.co.uk/colchester/page27.html
[23:59:09] <The_Ball> oh
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