#linuxcnc | Logs for 2014-09-12

[02:03:26] <MrSunshine> hmm any good free software for cnc plasma cutting? =)
[02:15:47] <ssi> linuxcnc :P
[02:24:09] <Deejay> moin
[07:09:59] <jdh> Happy Friday!
[08:52:39] <PetefromTn_> Morning folks
[08:56:27] <rythmnbls> g'morning
[08:56:55] * jdh hands Pete a soldering iron
[09:00:15] <Jymmm> wood burning?
[09:01:29] <PetefromTn_> Thanks guys I have a decent soldering station.
[09:02:40] <PetefromTn_> I am gonna get the encoder head mounted up to the new mount but I gotta pickup a very small tap for that. Then I can get the head mounted and start to assemble this thing. I will probably presolder the encoder leads into the milspec plug in the shop instead of atop the machine.
[09:03:25] <PetefromTn_> The ribbon cable will go thru the dust cover shield and then into the female plug but that has to go on the outside of this removable part of the motor housing.
[09:03:56] <PetefromTn_> So I will need to remove that part and make the whole thing an assembly and then install it all at once like it was from the factory.
[09:04:52] <PetefromTn_> Then once the motor and encoder assembly is completed I can turn my attention to the factory resolver cable and milspec plug that plugs into the side of the motor. Gonna need to get it setup for the eight pins plus ground etc.
[09:05:46] <PetefromTn_> Probably will have to remove those pins but have not looked at them yet. With any luck they soldered all eight of the contacts from the cable into the connector and I don't need to do anything but I am probably not that lucky.
[09:06:56] <PetefromTn_> It was a huge relief to know that there are actually enough leads inside that cable for the new differential encoder and I do not have to source another cable and try to run it up that cable chain.
[09:07:10] <PetefromTn_> If I can get it to work and look just like factory that is always a plus.
[09:10:11] <skunkworks> is the index mask already mounted? or is that something you have to do yet?
[09:10:48] <PetefromTn_> well honestly it seems that the guru PCW has found a way to mask it in the 5i25 apparently.
[09:11:03] <PetefromTn_> Not sure what or how the details worked on that but he did it and Connor has the information.
[09:11:48] <PetefromTn_> We are planning to have our own little LinuxCNC fest here at my shop on the weekend of the 20th. We will be working on SSI's 0704 mill spindle, Connors 0704 stuff and my Cincinatti.
[09:12:15] <PetefromTn_> I am trying to get the encoder mounted and electrically wired so when they get here we just have to plug it in and configure it.
[09:13:16] <PetefromTn_> My pal Art from Georgia said he MIGHT jump on his harley and ride up too possibly. That would be awesome to meet and greet and tech talk with these guys who have been so helpful to me.
[09:13:36] <PetefromTn_> My wife is planning to make her famous Chicken chimichangas etc.
[09:32:59] <skunkworks> Mmmm
[09:33:27] <jdh> I could ship my spindle and y'all could work on it too!
[09:39:25] <skunkworks> oh - without using an extra prox sensor?
[09:39:56] <skunkworks> is the spindle belt toothed?
[09:41:44] <PetefromTn_> yeah the spindlle has two timing belts running it off the motor
[09:42:56] <PetefromTn_> JDH I don't really know what we are doing with their spindles but I just run the lathe and do what I am told LOL.. If you really want it we could probably do it the same way they are doing it. I understand you have to order some special timing pullies like the ones SSI sent me here.
[09:43:06] <PetefromTn_> Gotta make some breakfast here BRB
[10:03:53] <PetefromTn_> Well damn that was a delicious three egg ham and cheese omlet !!
[10:11:35] <jdh> now it's time for lunch!
[10:11:48] <PetefromTn_> yeah I know I am slow in the morning hehe
[10:28:36] <jdh> s/ in$/\./
[10:29:27] <PetefromTn_> ?
[11:02:32] <Connor1> skunkworks: I think they're standard V-belts.
[11:03:50] <Connor> PCW made a custom image for the 5i25 that handles the mask.. we just need to tie the prox sensor hal pin to GPIO17 I think. and run a hardware jumper from GPIO17 to GPIO18
[11:05:09] <Connor> then, make sure the encoder index is roughly in the middle of the masked area.
[11:05:58] <jdh> then you will always have a one-off image
[11:06:06] <skunkworks> is the encoder mounted on the spindle or motor?
[11:06:22] <Connor> encoder is on the spindle, thus the need for the mask.
[11:06:27] <Connor> err. on the motor.
[11:06:33] <Connor> and it's a 2:1
[11:06:54] <skunkworks> I don't know how that can work if the pullys are not timed.. It will slowy go in and out of sync...
[11:07:20] <Connor> the mask covers 1/2 the spindle rotation
[11:07:20] <skunkworks> slowly
[11:08:12] <skunkworks> hmm - myabe that isn't a problem as you are only syncing for the length of a tap...
[11:08:13] <jdh> after the two belts slip > half a rev
[11:08:25] <archivist> there will be slip for v belts, it cannot be exactly 2-1
[11:08:51] <Connor> Then how did it work before then?
[11:09:28] <Connor> the original setup was a resolver on the motor.. and a 180 out prox sensor.
[11:10:00] <archivist> an assumption it was "near enough" maybe
[11:10:18] <Connor> had to be dead nuts on because of the tool changer.
[11:10:24] <skunkworks> is there a reason why you can't just use the prox sensor as the index?
[11:10:34] <Connor> the spindle has to be orientated for it.
[11:10:56] * skunkworks is just thinking out loud
[11:11:27] <Connor> skunkworks: That'll be the backup plan. But, it'll have to have have a level shift since it's 24v
[11:11:58] <Connor> but.. I'm not sure how well it would work.. since it'll be ON half the time, and OFF half the time.
[11:12:14] <jdh> leading edge trigger
[11:12:30] <skunkworks> peter would probably know better
[11:13:06] <Connor> Again, that is my backup plan.. but no one really brought this up the numerous times we've talked about it.
[11:13:12] <archivist> edge trigger would be 180 deg out in the reverse direction
[11:14:13] <jdh> if it worked before with the resolver, it should work the same with this.
[11:14:26] <Connor> I do know that people had issues with that machine if they removed the belts.. they had to index it and get the spindled oriented correctly with the motor..
[11:14:39] <pcw_home> The prox sensor is probaby a bit inaccurate if used as an index and has the same level translation issues
[11:15:26] <Connor> So, I guess the question is.. Does the encoder index have to be dead nuts center of the prox-mask range..
[11:15:47] <Connor> and will it slowly walk out of the range..
[11:16:10] <archivist> toothed belt should be ok
[11:16:28] <Connor> Honestly, I don't know what type of belts they are.
[11:16:52] <pcw_home> Oh V belts that makes the index mask unusable
[11:17:06] <Connor> I'm checking right now to see.
[11:19:50] <Connor> How would they have done it with the resolver on the motor for indexing the spindle ?
[11:21:07] <pcw_home> doesnt make much sense unless they used toothed belts
[11:21:43] <Connor> Maybe they did.. I don't remember.
[11:21:53] <Connor> PetefromTn_: What kind of belts are on that thing ?
[11:22:47] <pcw_home> the resolver has the same issue as the encoder, 180 degree uncertainly of spindle orientation
[11:23:43] <pcw_home> Which is why the prox is there
[11:24:44] <Connor> Well.. we'll wait till he comes back and tells us.. I can't find anything online that says what belt it uses.
[11:24:56] <skunkworks> PetefromTn_> yeah the spindlle has two timing belts running it off the motor
[11:25:19] <Connor> Well.. okay then.
[11:25:36] <skunkworks> if true - not a problem.. (unless it isn't exactly 2:1)
[11:25:37] <Connor> so, no belt slippage..
[11:25:37] <skunkworks> ;)
[11:25:50] <Connor> it would have to be to work as they have it setup.
[11:27:37] <skunkworks> you keep saying that
[11:27:39] <skunkworks> ;)
[11:28:15] <Connor> I don't know how else it would have worked.. :)
[11:29:38] <PetefromTn_> Guys the spindle motor to spindle drive is a dual timing belt setup. There IS not slippage.
[11:31:32] <PetefromTn_> The original machine setup used the prox sensors with the 180 out cam on the spindle body to determine where the spindle was for both tapping and orientation.
[11:34:54] <skunkworks> PetefromTn_, awesome - that should work great
[11:35:59] <PetefromTn_> http://imgur.com/IRrByaa Managed to get the encoder mounted. Damn tiny screws are a bitch....
[11:36:07] <PetefromTn_> Thanks Skunkie I sure hope se.
[11:36:08] <PetefromTn_> so
[11:40:15] <Connor> PetefromTn_: looks good.. your not using the provide base ?
[11:41:05] <kb8wmc> is it possible to install ONLY the Axis simulator application in another Debian based O/S
[11:41:14] <PetefromTn_> no the whole thing goes inside that resolver cover and I could not find the new one I got that had the damn base.
[11:42:09] <jdh> Pete: did you make the round part of the base on the mill also?
[11:42:55] <PetefromTn_> you mean the picture I posted yesterday?
[11:43:48] <jdh> yeah
[11:46:10] <PetefromTn_> the round part of the encoder mount I turned on my lathe to fit a recess that I machined underneath the base of the square part. It is to fit snugly in there to capture the shaft of the motor that protrudes about an inch above the motor housing.
[11:46:39] <Connor> PetefromTn_: I didn't get to see that.
[11:46:41] <PetefromTn_> The end of the shaft is threaded for a metric screw that will accept the encoder disk and stick up thru the hole in the square plate.
[11:47:54] <Connor> Oh. Your not using the shaft of the motor ?
[11:48:50] <PetefromTn_> http://imgur.com/a1yi68t,HF3mDCd,PNYIyn3 http://imgur.com/a1yi68t,HF3mDCd,PNYIyn3#1 http://imgur.com/a1yi68t,HF3mDCd,PNYIyn3#2
[11:49:35] <PetefromTn_> The spindle motors shaft is threaded and it is way to large to accept the encoder disk so I am turning an adapter for the shaft.
[11:50:11] <Connor> Last time I tried that.. my run out sucked.
[11:50:29] <PetefromTn_> Well that's why I am gonna turn it LOL
[11:51:06] <PetefromTn_> There really is no other way to do it that I can think of...
[11:51:14] <Connor> hehe.. I guess you could over size it a tad..and mount it on the motor and use emery cloth to bring it into spec.
[11:51:31] <Connor> run the motor up to speed..
[11:51:58] <PetefromTn_> I considered turning an adapter that went over the OD of the shaft but I still need a little shaft sticking up to accept the wheel.
[11:51:58] * SpeedEvil is remided of Matthias Wandal
[11:52:12] <PetefromTn_> who the hell is Matthias Wandal?
[11:52:26] <SpeedEvil> Truing up wooden bandsaw wheels by mounting on the motor
[11:53:28] <PetefromTn_> I'm pretty confident I will be able to get this thing concentric it is a well machined threaded hole it seems at least that is what my DTI says..
[11:53:46] <SpeedEvil> :)
[11:53:55] <PetefromTn_> A little Loctite and a carefully turned shaft and I will be ready to assemble this thing.
[11:53:57] <jdh> is the end of the shaft square?
[11:54:20] <PetefromTn_> for a shoulder turned adapter you mean?
[11:54:31] <jdh> yeah
[11:54:49] <PetefromTn_> dunno about that have not checked..
[11:55:10] <ssi> ~hm
[13:56:47] <jasen> http://imagebin.org/319483
[13:57:15] <Connor> little smaller photo please..
[13:57:35] <Connor> jasen: What is that ?
[13:57:58] <jasen> opps , sory , this is my new pick and place machine
[13:58:09] <Connor> Ah.
[13:58:12] <Connor> DiY ?
[13:58:33] <jasen> yes
[14:04:58] <archivist> remind me never to buy that camera
[14:20:21] <ssi> lol
[14:20:24] <MrHindsight> jasen: how many axis? Are any they hiding under that carriage?
[14:20:40] <MrHindsight> -they
[14:21:27] <jasen> this is manual tool with arm rest , it help to assemble smd components and specialy when size is 0603 and smaller
[14:21:49] <ssi> tweezers and a microscope works fine for me
[14:21:57] <ssi> if I'm gonna go to the trouble to build a machine, it's gonan be automated :)
[14:22:40] <jdh> tried melting solder paste with the laser?
[14:22:44] <archivist> you would cnc lifting a beer glass
[14:23:37] <ssi> would I? :P
[14:23:46] <ssi> jdh: no, but that'd be interesting to try
[14:24:36] <MrHindsight> it works
[14:26:05] <ssi> I bet
[14:26:14] <skunkworks> https://www.youtube.com/watch?v=X-tB3ZYK2j0
[14:26:18] <ssi> dunno what that buys me though; i have a reflow oven :)
[14:26:40] <jdh> add-on P&P for the laser table
[14:27:14] <ssi> I have another motion platform that I was planning on making a P&P
[14:28:16] <ssi> skunkworks: I like how it has an LCD with a picture of a woman on it
[14:28:26] <ssi> and a tuxedo vest
[14:29:34] <MrHindsight> otherwise you might confuse the device with a school lunch dispenser
[14:30:34] <archivist> I see the lcd had classicladder girl
[14:32:07] <MrHindsight> a table saw, a mill and robot walk into a bar .....
[14:34:38] <MrHindsight> https://www.kickstarter.com/projects/monsieur/monsieur-the-artificially-intelligent-robotic-bart?ref=search
[14:37:45] <MrHindsight> $2,699 for a production unit?!
[14:38:23] <archivist> one has to make a profit
[14:39:01] <_methods> heheh
[14:39:15] <MrHindsight> but this one doesn't even have arms
[14:41:01] <MrHindsight> I wonder why nobody ever though of having a drink dispenser before that works like a vending machine. :)
[14:44:16] <archivist> erm been around for eons a teasmaid
[14:45:41] <archivist> 1902 according to wikipedia
[14:46:01] <archivist> http://en.wikipedia.org/wiki/Teasmade
[14:48:25] <ssi> brits sure do love their tea
[14:48:46] <MrHindsight> I'd prefer a dispenser vs bartender at most corporate bars
[15:06:25] <tjtr33> What would happen if english had a different symbol for hyphen than minus?
[15:06:26] <tjtr33> python would get simpler, but we'd need 2 different visual glyphs.
[15:07:10] <tjtr33> i think its 'natural' for people to say things like 'door-open' rather than 'door_open'
[15:08:46] <CaptHindsight> so - in a high voice and _ in a low voice?
[15:09:36] <tjtr33> yeah, in my mind it my voice saying 'door-open' and Tennesee Ernie Ford doing 'door_open'
[15:10:14] <tjtr33> but languages that think it means door minus open are just inhuman
[15:10:51] <tjtr33> (backto document old hal edm code :)
[15:11:02] <CaptHindsight> it saves space as well, like mandarin, same word but different definition based on tones
[15:15:12] <tjtr33> http://www.pietrocarnaghi.it/en/index.html pietro carneghi means big-ass in italian ;)
[15:20:46] <andypugh> I managed to kill my bench PSU running a washing machine motor :-)
[15:21:10] <andypugh> So I was more than pleased to find one of these in the skip at work with a missing power switch. http://www.rapidonline.com/electrical-power/gossen-metrawatt-slp-120-40-120w-single-output-variable-dc-power-supply-40v-54-7420
[15:21:43] <andypugh> With the addition of a £2.09 switch it now appears fully functional.
[15:22:54] <rythmnbls> nice, thats a pricey PS
[15:23:43] <andypugh> Yeah. No idea _why_ they are so pricy. Maybe the extra control on the back? You can apparently parallel them in master/slave mode
[15:26:05] <andypugh> In another bargain, the Resolver I paid £14 for on eBay arrived today with a price sticker on it for £1490. Aerospace quality, brand-new in the original packaging,
[15:26:44] <andypugh> (I like Resolvers)
[15:27:59] <tjtr33> nice find, theres a company that makes linear encoders using ball bearings in tubes to get the sinus, they introduced a rotary at IMTS.
[15:28:59] <andypugh> Sounds cool.
[15:29:01] <tjtr33> similar in that its analog position so 'inifinite' rez
[15:30:13] <andypugh> archivist: World’s saddest Deckel? http://www.ebay.co.uk/itm/121434678474
[15:30:46] <syyl> awww :(
[15:30:52] <syyl> t:(
[15:30:54] <syyl> sad
[15:30:55] <PCW> that's like the Tin woodsman
[15:31:15] <syyl> thats a fp2 with 500mm x axis :(
[15:31:20] <tjtr33> thats a sin
[15:31:54] <andypugh> I guess it wouldn’t have been left out in the rain if it was working perfectly beforehand….
[15:32:22] <PCW> looks a little beyond the Scotchbright stage
[15:33:36] <CaptHindsight> rythmnbls: are you using the 3.14 RTAI on the i5?
[15:33:48] <tjtr33> wait, i saw the neracar, andy be careful!
[15:33:54] <andypugh> ?
[15:34:03] <andypugh> Not enough air in the tyres?
[15:34:05] <tjtr33> another project for you?
[15:34:13] <rythmnbls> not in production
[15:34:14] <andypugh> Ah, in that sense. Yeah...
[15:34:18] <tjtr33> very old beat up rusty...
[15:35:11] <andypugh> I already have an old machine tool for when i fancy some scraper-action. The Rivett is still in bits in my front room, partly scraped-in
[15:40:17] <syyl> the deckel would be a good candidate for the bucket refurbishment :D
[15:40:30] <syyl> bucket of paint, back to ebay, profit
[15:40:30] <syyl> :D
[15:43:13] <andypugh> Crind square, then hand-forst. Who cares if it is straight or the parts fit.
[15:43:38] <andypugh> Let me try again with actual words: Grind square, then hand-frost.
[15:44:01] <syyl> dont let that mr. richard king hear ;)
[15:46:05] <tjtr33> this bugatti engine block was scrapped (is that 1 p or 2 when its skrAYpd ?) http://www.leydonrestorations.com/picture/img_0231.jpg?pictureId=4829008
[15:46:29] <syyl> i scraped the table of my cheapo drillpress :D
[15:46:44] <andypugh> Normally they are spotted, but that is even more stupid :-)
[15:47:45] <syyl> and of course my setup blocks
[15:47:46] <syyl> https://dl.dropboxusercontent.com/u/24396704/Rahmenwinkel/pro_rahmen_24.JPG
[15:47:53] <syyl> but those are still work in progress
[15:48:01] <ssi> I think the problems I'm having with laser cutting plywood are wherever there's a void full of glue
[15:48:03] <syyl> got no nerv for scraping at the moment..
[15:48:12] <andypugh> I am not all that impressed by Bugatti. The workmanship is exquisite, but that straight-8 quite possibly has a built-up crank, held together with carefullly-filed cotter pins, and only 3 main bearings
[15:48:16] <ssi> the glue seems to reflect the beam back up, and I get a big charred hole in the inner layers, but it doesn't cut through the bottom
[15:52:24] <andypugh> I guess laser cutting works better than plasme cutting for plywood :-)
[15:53:12] <CaptHindsight> heh, well the glue is probably burning
[15:53:23] <syyl> spray with copper paint before plasmacutting ;)
[15:54:21] <syyl> (that was a joke of our wire edm guy: "we can cut wood if we sandwitch it between two sheets of copper")
[15:55:10] <ssi> heh
[15:55:20] <tjtr33> if you up the wire tension you can cut cheese ( tested! BTDT )
[15:55:30] <syyl> cool :D
[15:55:34] <ssi> don't even have to run the power supply :P
[15:55:56] <syyl> we have a brand new mitsubishi wedm
[15:56:05] <syyl> will ask next week if we can try it ;)
[15:56:14] <ssi> I'm sure that'll go over well :)
[15:56:24] <syyl> \o/
[15:56:52] <tjtr33> stupid wedm trix: cut ends off beer cans, they throw like foortballs, dead straight like arrows
[15:57:25] <syyl> full beer can?
[15:57:35] <syyl> that might mess with the tank
[15:57:39] <syyl> ;)
[15:57:58] <tjtr33> no, you need to empty them in a special way ( glug glug glug) THEN run a wedm
[15:58:07] <syyl> ah
[15:58:13] <syyl> internal lubricant for the operator
[15:59:26] <tjtr33> works like this airplane http://www.kids-fun-science.com/images/loop-airplane.jpg
[15:59:41] <syyl> ah
[15:59:48] <syyl> i built those as a kid
[16:00:05] <syyl> as beeing still a kid at heart i might try that too :D
[16:00:16] <ssi> http://aero.stanford.edu/reports/nonplanarwings/RingWing.jpg
[16:01:09] <CaptHindsight> ssi: have you seen a difference in laser cutting behavior between indoor and marine plywood?
[16:01:23] <ssi> I haven't tried marine plywood
[16:01:32] <ssi> but all plywood cuts differently, for sure
[16:01:57] <ssi> I have some stuff with three core layers that cuts well, except where it hits those voids
[16:02:05] <ssi> then I have some stuff with seven core layers that doesn't cut for crap
[16:02:25] <ssi> this is all 1/2" btw
[16:02:36] <ssi> I can cut 1/4" no problem
[16:02:50] <ssi> what's weird is it all cuts as well at ~50W as it does at 100W
[16:02:54] <ssi> turning up the power doesn't help punch through
[16:02:58] <ssi> and it doesn't allow me to run faster
[16:03:24] <ssi> a large part of the problem is depth of field
[16:03:42] <CaptHindsight> the adhesives in indoor are different that marine, but then so again is the composition of the wood
[16:04:54] <ssi> I dunno where I'd get marine plywood
[16:05:13] <ssi> yeah I do
[16:05:18] <ssi> but it's far away :)
[16:05:25] <CaptHindsight> http://www.cutlasercut.com/laser-cutting-materials-laser-engraving-materials/birch-laser-plywood-laser-cutting-plywood
[16:05:43] <ssi> I think the laser plywood is made with white glue
[16:06:30] <ssi> http://www.aircraftspruce.com/catalog/wppages/royalmarine.php
[16:06:46] <CaptHindsight> "Make sure your plywood is interior grade with an MR glue line"
[16:06:50] <ssi> http://www.aircraftspruce.com/catalog/wppages/finnishbirch.php
[16:06:53] <ssi> aircraft plywood is $$
[16:07:41] <CaptHindsight> Compressed air (usually 4 bar of pressure) is used to prevent flaming, scorching and charring
[16:07:55] <ssi> I'm running air
[16:08:00] <ssi> have to, it burns real bad without it
[16:10:14] <ssi> http://www.homedepot.com/p/Unbranded-1-2-in-x-4-ft-x-8-ft-PureBond-Birch-FSC-332021/202887462
[16:10:22] <ssi> that's the stuff that cuts reasonably well
[16:10:29] <ssi> but it's not reliable enoguh yet
[16:11:16] <roycroft> i thought baltic birch was free of voids
[16:11:36] <roycroft> there's still plenty of glue in it, of course
[16:11:43] <roycroft> and it's marine grade glue - certainly not white glue
[16:12:08] <ssi> I think the white glue is better for laser
[16:12:48] <roycroft> not only is it marine glue, there's a *lot* of glue
[16:12:52] <ssi> also the good baltic birch ply is usually 11 or 13 ply for 3/4"
[16:13:01] <ssi> which means more glue
[16:13:02] <roycroft> baltic birch plywood has more plies than american hardwood plywood
[16:13:07] <roycroft> jinx!
[16:13:34] <CaptHindsight> urea formaldehyde is used for indoor and marine tends to use phenol formaldehyde
[16:14:22] <ssi> I was hoping I'd be able to get 1/2" reliable on the 2" lens, and that 3/4" would be reliable on the 3" lens when it comes next week
[16:14:29] <CaptHindsight> but from reading the laser plywood boards people say it should be as flat as possible and that once they find a source that works well they stick with it
[16:14:34] <ssi> but now I'm just hoping I can make 1/2" reliable on the 3" lens
[16:20:49] <CaptHindsight> 4mm plywood 100w CO2 laser http://www.youtube.com/watch?v=EgkFZK69rg8
[16:21:41] <ssi> 4mm is easy
[16:21:48] <ssi> I want 20mm :)
[16:22:43] <Deejay> gn8
[16:22:48] <tjtr33> hmm makes me imagine cnc laser cut stitch and glue boat kits, but need that copper wire sewing machine and epoxy apply-er http://www.clcboats.com/default/stitch-and-glue-boat-building.html
[16:22:52] <Connor> Why would you need masking tape ?
[16:23:11] <CaptHindsight> http://www.youtube.com/watch?v=MpejTdM9iMU says 20mm plywood but looks more like lumber
[16:23:39] <ssi> I haven't tried solid wood yet
[16:23:41] <ssi> I imagine it's easier
[16:27:13] <tjtr33> 20mm! maybe of interest http://www.wikihouse.cc/
[16:27:54] <CaptHindsight> everyone seems to say that marine glue makes it really difficult to cut
[16:31:20] <ssi> https://pbs.twimg.com/media/BxXKHodIUAAGU37.jpg:large
[16:31:27] <ssi> not perfect due to cutting issues, but the concept is sound
[16:32:32] <ssi> and the contrast actually looks pretty cool
[16:36:35] <ssi> this is the crap I'm talking about:
[16:36:35] <ssi> https://pbs.twimg.com/media/BxXLUzjIQAApyFA.jpg:large
[16:36:51] <ssi> that spot, for whatever reason, it stopped cutting at the glue line above the bottom core layer
[16:36:53] <Connor> Anyone have linearmotionbearings2008 ebay guys email address ?
[16:42:24] <andypugh> ssi once you are boiling a pool of glue all the heat is dissipated by the enthalpy of evaporation.
[16:56:26] <ssi> all enthalpy aside, have any ideas on how to make it better?
[16:56:30] <ssi> I'm playing with overcutting now
[16:56:45] <ssi> whereas I've been cutting like 5ipm so far, it looks like taking five passes at 40ipm cuts pretty well
[16:58:10] <PetefromTn_> Okay folks I managed to get the small shaft for the spindle encoder stub machined to accept the new encoder wheel. I turned it entirely on the lathe so it SHOULD be pretty damn concentric. It is only a quarter inch shaft so if it is out a touch I can ADJUST it with a rubber mallet LOL
[17:00:01] <ssi> anyone know if it's possible to get sheetcam to do multiple passes?
[17:00:18] <PetefromTn_> I think so..
[17:00:19] <syyl> in profile cutting?
[17:00:31] <PetefromTn_> lemme look at it sec
[17:00:48] <ssi> oh I guess I just add multiple operations on the same path
[17:03:18] <PetefromTn_> Hrm could you just set your Z depth and then set cut depth for a very tiny number so it has to run over it again and again?
[17:03:38] <PetefromTn_> or rather depth per pass...
[17:09:02] <PetefromTn_> You can also copy and paste the toolpath into the tree as far as I recall.
[17:15:30] <Tom_itx> put it in a subroutine and call it multi times
[17:17:15] <PetefromTn_> Well Manhattan Supply Company came thru again. I ordered some tooling and some new ER32 Collets yesterday afternoon and they just got here today. Thats kickass shipping!!
[17:48:22] -tepper.freenode.net:#linuxcnc- [freenode-info] why register and identify? your IRC nick is how people know you. http://freenode.net/faq.shtml#nicksetup
[18:57:50] -hobana.freenode.net:#linuxcnc- *** Notice -- TS for #linuxcnc changed from 1410562219 to 1300888271
[18:57:50] hobana.freenode.net changed topic of #linuxcnc to: LinuxCNC is a linux-based open-source CNC control. | Latest release: 2.6.3 | http://www.linuxcnc.org
[19:18:44] * likevinyl is away: viendo la vida de tristes peleles? mejor: Unite al círculo de esgrima medieval Valherjes
[19:41:39] <archivist> andypugh, ouch, but I bet something could be done with it
[19:43:03] <andypugh> archivist: It is just possible that underneath the very good covers the slides are OK. But it’s not a gamble I fancy, and it is still useless wthout a table at the very least.
[19:46:41] <archivist> as a bunch of castings for the addition of cnc
[19:56:00] <PCW> surprisingly enough the stepgen works OK at a 100 Hz servo thread
[19:56:01] <PCW> (obviously the path will have a fair bit of faceting on fast curves at that update rate)
[19:56:06] <andypugh> Even with CNC the slides still need to work.
[19:56:48] <andypugh> PCW: 100Hz servo and FPGA stepgen?
[19:57:08] <PCW> best left to RIP (Rust In Peace)
[19:57:12] <PCW> Yes
[19:57:46] <PCW> i tried 50 hz but the DPLL wont lock that low
[19:58:17] <andypugh> Fix the DPLL! What kind of horrible bug is that?!
[19:59:00] <PCW> yeah it needs to run a 1Hz for GPS 1PPS locking
[19:59:32] <andypugh> PCW: I won a banch PSU from the skip today that I think will wake up an 8i20, which will be a win for testing.
[19:59:45] <andypugh> (bench)
[20:00:09] <PCW> PS was OK?
[20:00:46] <andypugh> The On/Off switch was missing, (bizarrely). Just 4x 1/8” Fastons hanging out.
[20:01:19] <andypugh> It turns out to be really hard to find a 13 x 19mm DPST switch with 1/8” fasatons.
[20:02:04] <andypugh> Which might be why they tossed a $1300 PSU.
[20:02:12] <PCW> power switches often wear out on bench supplies, maybe the people that tossed it couldn't find one either
[20:02:27] <PCW> nice
[20:02:43] <andypugh> I changed the terminals to the next size up, and fitted a £2 switch
[20:03:30] <andypugh> It’s this one: http://www.rapidonline.com/electrical-power/gossen-metrawatt-slp-120-40-120w-single-output-variable-dc-power-supply-40v-54-7420
[20:03:53] <andypugh> Frankly I don’t see why it is _quite_ that expensive
[20:04:06] <PCW> that looks quite nice
[20:04:07] <andypugh> It’s wierldy light, must be a switcher.
[20:05:00] <andypugh> It has a set of remote control terminals on the back, they can be paralleled apparerently.
[20:05:20] <PCW> yeah I have a couple cheapo 6V 5A supplies but they are not great
[20:05:37] <andypugh> 60V ?
[20:05:46] <PCW> probably sense inputs
[20:05:56] <PCW> yeah 0 to 60V 5A
[20:06:04] <SpeedEvil> http://www.ebay.co.uk/itm/Agilent-HP-6632A-Power-Supply-20V-5A-100W-/301220188055?pt=LH_DefaultDomain_0&hash=item46221f4f97
[20:06:45] <andypugh> Back panel has sense, output, external voltage and current control at both 0-10V and 3-20mA and “remote”
[20:07:00] <jdh> 3-20?
[20:07:29] <andypugh> but that’s just firmware, doesn’t really excuse the price