#linuxcnc | Logs for 2015-12-18

[01:59:50] <Contract_Pilot> Anyone ever done a EDM on LCNC?
[02:01:10] <archivist> yes, there is a youtube vid somewhere
[02:01:58] <archivist> he upgraded a wire edm
[02:03:11] <archivist> https://www.youtube.com/watch?v=iNn9Jv5_h64
[02:04:17] <toastydeath> that's awesome
[02:06:43] <Contract_Pilot> thinking of sinker
[02:07:09] <Contract_Pilot> http://portland.craigslist.org/wsc/tls/5345007030.html
[02:07:34] <archivist> cheap enough
[02:08:41] <Contract_Pilot> Yea, may be another project!
[02:09:20] <archivist> I imagine the torch height method should also work for sinking
[02:09:27] <Contract_Pilot> Close enouggh! 40min drive ea way with traffic
[02:10:23] <archivist> I have seen a home sinker at a show with linuxcnc
[02:11:06] <Contract_Pilot> Ill look at it monday if still avaiabke been listed for 3 months i could not find no info on it.
[02:11:26] <Contract_Pilot> steven@stevenrhine.com if you can find info!
[02:11:45] <Contract_Pilot> off to bed have to be up early for gun show...
[02:22:32] <Deejay> moin
[07:42:16] <XXCoder> whoa!
[07:42:20] <XXCoder> this is cool. https://www.youtube.com/watch?v=KdpQo3tRPLY
[07:44:20] <malcom2073> Nice
[07:44:26] <XXCoder> yeah
[07:44:40] <XXCoder> and that gel thing is cool
[07:44:57] <malcom2073> I got a couple bags of the jell balls
[07:45:02] <malcom2073> My kids love playing with them
[07:45:08] <malcom2073> jelly*
[07:45:17] <XXCoder> fill a swimming pool with it. lol
[07:45:26] <malcom2073> Lol that's be weird
[07:45:33] <XXCoder> seriously, dont theres probably big drowning risk
[07:45:38] <Tecan> combine the gell balls with essential oils
[07:45:46] <Tecan> instant air freshner
[07:45:57] <XXCoder> and I guess renewable
[07:46:29] <malcom2073> Yeah, as they dry out, they shrink back down
[07:47:15] <XXCoder> big one probably acts as humidizer
[07:47:30] <malcom2073> I don't imagine it being any better than a pot of water
[07:47:37] <XXCoder> as soon as it goes drier than its release level it releases more water.
[08:16:03] <MikkoP> Haha, epic fail :D The nut came loose from the ball screw :D The power supply off switch was too far away to reach :D Fortunately I got all the little balls
[08:19:40] <Jymmm> Not enough BRB's
[10:32:56] <lair82> pcw_home you around this morning?
[12:16:17] <Pudlo> Should I bother trying to use WD40 as a shitty cutting fluid with brass, or am I better off going dry? Cutting 1/8in brass on a CNC router with a single flute 2mm endmill.
[12:16:38] <archivist> dry for brass
[12:17:05] <archivist> but your cutter geometry is probably not the best
[12:17:10] <cradek> WD40 actually works well - for aluminum it's very helpful, but for brass I agree it's unneeded
[12:17:38] <Pudlo> kk. How do I learn this sort of thing - is there a reference for it, or is it just "learn by doing?"
[12:17:45] <cradek> hope you have extra endmills
[12:17:53] <cradek> what's your spindle speed?
[12:18:02] <archivist> run the cutter fast for brass
[12:18:10] <Pudlo> haha yeah - I'm using cheap chinese carbide and a spindle without a tach on it
[12:18:12] <Tom_itx> brass likes to grab the cutter
[12:18:15] <Pudlo> I think it's around 24K
[12:18:18] <Pudlo> ugh, I know
[12:18:24] <Pudlo> killed two endmills on the last job
[12:18:41] <Pudlo> thankfully, they're cheap chinese shit
[12:18:50] <cradek> haha, haven't heard that before
[12:18:59] <Tom_itx> well likely good ones wouldn't have broken
[12:19:09] <archivist> is it machine flex causing the breakages
[12:19:14] <Pudlo> yepp
[12:19:24] <Tom_itx> better fix that first
[12:19:24] <Pudlo> it's a really, really shitty DIY machine
[12:19:40] <Pudlo> eh, not really possible without replacing the entire machine haha
[12:19:45] <cradek> do you really need to use such a small tool?
[12:20:41] <archivist> flatten the rake for better life/less grabbing
[12:20:53] <Pudlo> re: size - unfortunately. Christmas ornaments that need some detail. Last job worked fine after I got the kinks worked out though, so I'll try this one and see how it goes.
[12:21:04] <cradek> reshaping is kinda hard to do on 2mm carbide I bet
[12:21:14] <cradek> are you trying to cut in one pass?
[12:21:29] <Pudlo> lol no
[12:21:33] <Pudlo> .2mm passes
[12:21:42] <Pudlo> was the only way I could get it to work
[12:22:03] <Pudlo> I'd never thought of reshaping. That's a cool idea - I might try it on some 1/8 carbide later.
[12:22:12] <Pudlo> Would I just do that with a file?
[12:22:22] <cradek> no, you'll have to use a diamond hone of some kind
[12:22:34] <archivist> also depends on the brass, soft, hard, etc. naval brass is evil
[12:22:50] <cradek> keep the diamond wet with water
[12:23:19] <archivist> naval brass is more of a bronze
[12:23:33] <Pudlo> This is just plain old C360
[12:24:01] <Pudlo> Couldn't find anywhere that sold free-machining brass, but at least this stuff is affordable
[12:24:10] <Pudlo> metal supermarkets FTW
[12:31:09] <cncbasher> pudlo: where are you located ?
[12:31:47] <Pudlo> waterloo, Canada
[12:32:12] <Pudlo> I think mcmaster carries free-machining brass, but it's $$$
[12:32:26] <cncbasher> http://m-machine-metals.co.uk/ ok may be too far , but they do supply world wide
[12:32:44] <cncbasher> and mail order
[12:32:49] <CaptHindsight> Metal Supermarkets supplies McMaster with their metals
[12:33:03] <CaptHindsight> same for graniger and few others
[12:33:29] <Pudlo> haha do they really? That's funny. Do you guys know a good north-american place to buy acetal or HDPE?
[12:33:32] <ReadError> ive actually found some pretty solid deals on amazon
[12:33:45] <ReadError> Pudlo HDPE is dirt cheap on amazon too
[12:33:54] <ReadError> and with prime its a no brainer
[12:34:53] <CaptHindsight> yeah Amazon or Total, Laird etc
[12:35:17] <CaptHindsight> depends on if you want small pieces or full sheets
[12:35:50] <Loetmichel> MAAAN, sometimes i hate my co-worker. we worked very hard to get the 10 thin clients to the customer on monday. All done exept 4 pieces to endtest. Cue co-worker whom i tasked with shielding the 10 keyboards that go with the clients..."michel, there are 6mm bolts missing. order them!" me: "we know that for two days, i said use 2 wahsers and 5mm bolts instead!" "no, i'm going home now. See
[12:35:50] <Loetmichel> you next year!"... so i have to come to work tomorrow and do HIS job for the last week in a few hours. :-(
[12:36:46] <CaptHindsight> your boss must like him for some reason
[12:37:07] <Loetmichel> CaptHindsight: the coworker has 4 years to retirement
[12:37:24] <Tom_itx> he might not make it
[12:37:29] <Loetmichel> and boss HAS a soft spot fgor him. thats not the first time he did such a stunt
[12:37:49] <Loetmichel> but boss was furious when we told him a few minutes ago
[12:38:08] <Loetmichel> i dont think the co.worker will make it to retirement in our company...
[12:38:38] <Tom_itx> will you?
[12:38:41] <CaptHindsight> on the other hand, how dare you ask him to get a few bolts before the holidays!
[12:38:55] <Tom_itx> damn right
[12:38:57] <CaptHindsight> is he ill?
[12:39:20] <CaptHindsight> or possibly childish/lazy?
[12:39:24] <Loetmichel> lazy
[12:39:34] <Tom_itx> i hate lazy
[12:39:43] <Loetmichel> and russian ;)
[12:39:44] <Tom_itx> and you just can't fix stupid
[12:40:10] <CaptHindsight> as my dad used to say "never trust a Russian"
[12:41:00] <CaptHindsight> but that was back in Stains day
[12:41:11] <CaptHindsight> Stains/Stalins
[12:41:55] <archivist> Satans
[12:51:33] <FloppyDisk> 6 hrs left for someone to snap it up: http://www.ebay.com/itm/281882663902
[12:52:22] <Loetmichel> ok, not entirely true. he is "kasache" (whats "Kasachstan" in english?"
[12:52:23] <Loetmichel> )
[12:53:11] <CaptHindsight> it's one of the *stan's
[12:53:30] <CaptHindsight> https://en.wikipedia.org/wiki/Kazakhstan
[12:54:22] <Loetmichel> that
[12:54:37] <Loetmichel> is his country of origin
[12:58:14] <tiwake> welding job is done and delivered
[12:58:15] <tiwake> yay
[12:58:41] <tiwake> then a customer calls me and wakes me up and wants some stuff done right now
[12:58:51] <tiwake> this morning
[12:59:00] <archivist> charge more
[12:59:48] <tiwake> I have the parts in my shop right now, its pretty simple really
[13:00:24] <Loetmichel> tiwake if they dont flinch when you tell them the price you are to cheap ;)
[13:00:26] <tiwake> told him 5 hours, I'll probably have it done in 3
[13:00:52] <tiwake> Loetmichel: heh, yeah, I've been learning that over the last year
[13:01:36] <tiwake> Loetmichel: though the local economy here in tillamook is quite different from most areas
[13:01:42] <tiwake> everyone here is cheap
[13:02:19] <tiwake> mostly because its a farming industry here
[13:02:31] <tiwake> dairy
[13:03:45] <JT-Shop> lol there is a spider living on my desk... do you think I need to clean it?
[13:04:13] <archivist> only one?
[13:04:19] <tiwake> JT-Shop: don't get rid of your only friend
[13:04:26] <Pudlo> +1
[13:05:05] <JT-Shop> well there may be more I've not learned to recognize them yet
[13:06:13] <archivist> cue Jaws music...tarantula enters stage left
[13:07:54] <Loetmichel> taratula is a cute pet
[13:07:55] <Jymmm> tarantula hawk vs tarantula https://www.youtube.com/watch?v=TQNgxJdqzm4
[13:10:06] <archivist> reminds me of a scorpion that walked over one of my feet as a kid
[13:10:06] <Loetmichel> black widow on the other hand...
[13:10:24] <tiwake> Loetmichel: those are not cute either?
[13:13:20] <Loetmichel> a bit deadly to be cute. the bite of a tarantula is like a mosquito bite
[13:13:24] <Loetmichel> ;-)
[13:15:31] <tiwake> erm
[13:15:46] <tiwake> depends on the tarantula I suppose
[13:16:13] <tiwake> some of them your flesh in a 3" area will fall off...
[13:17:06] <Jymmm> BTW tarantula hawk is a species of wasp. It parayzes a tarantual, lays it's eggs on it, then when they hatch they eat the tarantual alive.
[13:17:16] <tiwake> then you have to hire a bunch of cute maggots to clean things up for you
[13:17:56] <Pudlo> ew
[13:18:29] <Jymmm> puffed maggots with mango sauce?
[13:20:52] <tiwake> no, maggots to clean out the 3" gaping hole of dead flesh
[13:21:09] <tiwake> from the cute tarantula bite
[13:21:10] <tiwake> lol
[13:44:58] <gregcnc> floppydisk are you bidding on it? I thought about it, but haven't finished the retrofit on the one I already have. If it had the through spindle, I'd buy.
[13:47:57] <FloppyDisk> @gregcnc No, I'm not bidding on it - sigh. I think it would be an excellent little lathe. Too many projects as well.
[13:48:29] <FloppyDisk> @gregcnc It does look like there is a hole on the left side of the machine that I assumed was a through spindle - no?
[13:50:15] <JT-Shop> I wonder if this is any good for small part deburring? http://www.amazon.com/TRI-Global-TRIH0-STF-105DRVT-Vibratory/dp/B00CANF9NI/ref=pd_sim_sbs_60_2?ie=UTF8&dpID=412KYfeDh1L&dpSrc=sims&preST=_AC_UL160_SR127%2C160_&refRID=15THTKYB7BBFT06GYM76
[13:50:42] <gregcnc> The pneumatic drawbar actuator has no through hole. I'm not even sure if the 120 were available with 1" thru, though a brochure seems to indicate they were. 220 and 320 had 26mm through.
[13:51:19] <FloppyDisk> Oh.. Makes sense.
[13:52:12] <gregcnc> my older Compact 6 has only 16mm through and only with manual collet chuck.
[13:56:19] <gregcnc> JT, I've seen them mentioned often. Commonly used by shooters for cleaning brass.
[13:56:50] <JT-Shop> I've cleaned brass in the ones you find in the gun shops
[13:59:02] <gregcnc> So I was drilling holes in a vise, on purpose. Why would a vise be soft on top and frackin hard in the middle? I thought this was going to be easy when I checked a corner with a file. Fortunately I had some carbide tipped drills. Now I hope I can mill a counter bore for a SHCS.
[14:14:26] <malcom2073> Weird, both openscam and the new camotics displays my gcode path on initial load, but when I adjust workpiece size and rerun, half of it disappears (the last half of the file)
[14:25:49] <JT-Shop> Raytech seems to be a good brand
[14:36:15] <malcom2073> Heh, CAMotics says this will take 48hours
[15:19:53] <malcom2073> Man these facebook groups are getting almost as good as craigslist
[15:20:03] <malcom2073> Toolbox: "Like new, needs drawers cleaned"
[15:20:31] <malcom2073> My favorite though, was for a car, "Hole in transmission, runs and drives great"
[15:30:56] <Loetmichel> malcom2073: and where is the problem?
[15:31:18] <Loetmichel> my old car had run 6 years without ANY oil in the diff ;)
[15:31:40] <Loetmichel> (broken driveshaft bearing seal)
[15:34:27] <gregcnc> oil is over rated https://www.facebook.com/video.php?v=1141644042531104&pnref=story
[15:37:30] <Loetmichel> gregcnc: for short perioods of time anyways. also: How did THAT happen?
[15:37:35] <Tom_itx> JT-Shop, my friend used a similar tabletop vibra-tumbler before he got his big one. it seemed to work fine
[15:38:00] <Loetmichel> on that account: i should refill the engine of my new(er) car soon
[15:38:04] <malcom2073> Heh
[15:38:41] <Loetmichel> it had started to blink me with the oil pressure light when decellereating in front of a traffic light ;)
[15:38:54] <JT-Shop> Tom_itx: thanks
[15:38:59] <Loetmichel> s/started/ started lately
[15:39:01] <malcom2073> My protege does that when I take hard left turns if its low, blinks the light very quickly
[15:39:09] <malcom2073> Usually when it gets down to 1-2qt in it it'll do that
[15:39:27] <Loetmichel> i think i will refill about 2.5 liters
[15:39:30] <Tom_itx> JT-Shop, make sure you get the right media for it and the material you're deburring
[15:39:33] <Loetmichel> to get it back to "max"
[15:39:44] <JT-Shop> I must be doing something wrong... I've upgraded to 2.7, set encoder 4 counter-mode to True and verified that
[15:39:44] <Tom_itx> shape and texture make a difference
[15:39:50] <Loetmichel> thats the usual amount when the oil lamp starts blinking ;)
[15:40:05] <JT-Shop> yea, I've been reading up on the media
[15:40:22] <Tom_itx> he had some cone and some pyramid for different things
[15:40:29] <Tom_itx> i can't recall what else he used
[15:40:39] <JT-Shop> connected the probe to +5 and QA4 but don't see it change state
[15:40:56] <Tom_itx> pullup needed?
[15:42:22] <Loetmichel> ah, nice
[15:42:29] <Loetmichel> a quart is 0.94 liters
[15:42:35] <Loetmichel> good to know ;)
[15:42:42] <Loetmichel> @ malcom2073
[15:42:50] <malcom2073> Loetmichel: Nice heh
[15:43:03] <JT-Shop> checked the probe and it works like a switch...
[15:43:09] <Tom_itx> yup
[15:45:16] <JT-Shop> checked the probe wiring...
[15:45:36] <Tom_itx> check the pin with just a wire
[15:45:42] <Tom_itx> that's all the probe is
[15:46:18] <Tom_itx> reverse logic?
[15:46:46] <robinsz> have you tried turning it off and on again?
[15:46:52] <JT-Shop> something is screwy
[15:47:02] <malcom2073> Reverse the polarity!
[15:47:17] <JT-Shop> saw the input a pin on for a bit then off and won't come back on
[15:48:12] <gregcnc> holes in vise now counterbored. that was surprisingly painless.
[15:48:39] <Tom_itx> JT-Shop, what V did you connect the probe to? and what V will the pin tolerate?
[15:48:40] <malcom2073> gregcnc: Figure out why the center was more difficult than the surface?
[15:48:46] <malcom2073> Or just not worrying about it?
[15:49:57] <JT-Shop> Tom_itx: jumper not set right
[15:52:48] <JT-Shop> anyone notice if PCW put up the link for the 5i25 firmware that is more immune to serial noise?
[15:53:00] <Tom_itx> nope
[15:56:31] <JT-Shop> now I'm trying to figure out why the spindle is set to single ended when it is a differential encoder
[15:57:13] <Tom_itx> shouldn't be if you're doing rigid tapping iirc
[15:58:01] <Tom_itx> err... i used single ended on my mpg and it was differential
[15:58:19] <Tom_itx> just used the resistor divider on the board
[15:59:00] <Tom_itx> and my spindle encoder _was_ single ended
[16:10:20] <gregcnc> malcolm2073 No idea about the hardness, best guess is the block was hard and somebody didn't soak it long enough when they annealed it before making it. It looks shop made. just happy I could make the holes myself, with tools I already had.
[16:12:25] <malcom2073> Ah, well glad it worked out
[16:40:21] <XXCoder> hhheys
[16:40:25] <JT-Shop> just hard wired it and still no input a
[16:41:16] <Tom_itx> hope you didn't bugger something up
[16:41:32] <Tom_itx> JT-Shop, encoder input?
[16:41:45] <Tom_itx> is the function in the bitfile?
[16:41:57] <Deejay> gn8
[16:41:59] <Tom_itx> i sometimes leave off the B X if i'm not gonna use em
[16:43:23] <PCW> if the encoder input is set for TTL mode, grounding the input should be all thats needed
[16:44:37] <JT-Shop> ok
[16:45:30] <PCW> and you use the non-inverting input for TTL mode (it should measure ~5V when unconnected, it has a 2K pullup resistor to 5V))
[16:46:34] <PCW> for the 7I77 (because it has muxed encoders) you must use the encoder A (or B) HAL pin, not the GPIO pin
[16:47:37] <PCW> I think these pins are only in 2.7
[16:48:57] <JT-Shop> that's what was wrong, I had the wires in the wrong holes... I'm watching hm....input-a
[16:51:32] <PCW> its pretty had to damage encoder inputs in TTL mode (safe to +-25V momentarily)
[17:41:07] <JT-Shop> now I get a bunch of comm errors when I try and jog and a joint following error
[18:00:20] <JT-Shop> this is the output to the terminal
[18:00:22] <JT-Shop> http://pastebin.com/6zvUSFNr
[18:03:34] <JT-Shop> and dmesg http://pastebin.com/iuHJ5hXT
[18:04:34] <JT-Shop> my guess is I borked something
[18:16:27] <JT-Shop> yea Tom_itx I think I borked it
[18:16:44] <JT-Shop> and mesa is out of stock on 7i77's
[18:16:50] <jdh> you borker
[18:19:26] <Tom_itx> that sucks
[18:19:33] <Tom_itx> get parts and fix it
[18:19:36] <JT-Shop> yep big time
[18:19:42] <Tom_itx> what is cooked?
[18:20:06] <JT-Shop> dunno I can't jog anymore, I get following errors so I assume the 7i77 is toast
[18:20:23] <JT-Shop> I love to get parts...
[18:20:34] <Tom_itx> take it back to when you started and see if it works without the probe
[18:20:36] <Tom_itx> just to see
[18:20:48] <JT-Shop> doesn't make any difference
[18:20:58] <Tom_itx> you _did_ back up the config right?
[18:21:28] <JT-Shop> I only commented out one line for the watchdog and added two more
[18:21:47] <Tom_itx> did you short something?
[18:21:59] <JT-Shop> I get a zillion smart serial errors
[18:22:16] <JT-Shop> when I jog
[18:22:22] <Tom_itx> the probe is on a sserial card?
[18:22:35] <JT-Shop> it's on the 7i77
[18:22:59] <Tom_itx> you sure the probe isn't connected to an alternate sserial pair?
[18:23:32] <Tom_itx> what pin is the probe on?
[18:23:59] <Tom_itx> IO pin, not physical pin
[18:24:26] <Tom_itx> if it's on IO 3..7 it won't work
[18:24:31] <JT-Shop> I don't know what that is
[18:24:38] <Tom_itx> io 3..6
[18:24:46] <Tom_itx> those are the sserial IO
[18:24:52] <Tom_itx> acording to your dmesg
[18:24:54] <JT-Shop> it's connected to the encoder input
[18:25:30] <JT-Shop> I don't know what IO 3..7 is
[18:25:47] <Tom_itx> [ 153.224287] hm2/hm2_5i25.0: IO Pin 003 (P3-15): Smart Serial Interface #0, pin TxData1 (Output)
[18:25:47] <Tom_itx> [ 153.224295] hm2/hm2_5i25.0: IO Pin 004 (P3-03): Smart Serial Interface #0, pin RxData1 (Input)
[18:25:47] <Tom_itx> [ 153.224304] hm2/hm2_5i25.0: IO Pin 005 (P3-16): Smart Serial Interface #0, pin TxData0 (Output)
[18:25:47] <Tom_itx> [ 153.224312] hm2/hm2_5i25.0: IO Pin 006 (P3-04): Smart Serial Interface #0, pin RxData0 (Input)
[18:26:48] <Tom_itx> follow it back to the 5i25 card
[18:27:20] <JT-Shop> I only see a P1 on the 7i77
[18:27:29] <PCW> I think its likely you have a ground loop
[18:27:42] <Tom_itx> well i bet it isn't borked
[18:27:50] <Tom_itx> sry, gotta go for now...
[18:28:12] <JT-Shop> ground loop on the encoder input?
[18:28:40] <PCW> I would disconnect the probe and it s ground and see if things get better
[18:30:11] <PCW> probably encoder ground connected to some noisy machine ground somewhere
[18:30:46] <PCW> (well guessing from x thousand miles away)
[18:31:04] <JT-Shop> hey your guess is better than mine :)
[18:31:26] <JT-Shop> did you say you had a more noise resistant firmware for the 5i25
[18:32:17] <PCW> Working on it
[18:32:46] <PCW> still wont fix big ground loops (need 7I77ISOL or 7I92 for that)
[18:32:49] <JT-Shop> ok
[18:35:38] <PCW> A few people have noticed greater noise sensitivity on newer (V37+) sserial firmware
[18:35:39] <PCW> I suspect it is because the UART base clock runs at 100 MHz instead of 33 MHz so
[18:35:41] <PCW> I am adding a input digital filter to the RX UART
[18:36:31] <PCW> (this will only affect extra character errors from impulse noise)
[18:38:47] <JT-Shop> I ordered a 7i77isol
[18:39:28] <JT-Shop> at least I think I did
[18:41:38] <JT-Shop> gotta run for now, thanks for the help Peter
[20:23:57] <PCW> JT-Shop: anyone notice if PCW put up the link for the 5i25 firmware that is more immune to serial noise?
[20:23:59] <PCW> http://freeby.mesanet.com/77f.bit (7I77x2 config)
[20:24:00] <PCW> http://freeby.mesanet.com/76f.bit (7I76x2 config)
[23:27:54] <Erant> toastydeath: 0.375" DOC, 0.05" WOC, 1500RPM, 17IPM and the machine hums along quite nicely.
[23:28:16] <Erant> 2k RPM and 22IPM it handles, but there's a minor chatter.