#linuxcnc | Logs for 2014-09-07

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[00:32:33] <anarchos2> remember kids, 0.02inch is a lot different than 0.02mm!!
[00:32:40] <anarchos2> broke my first end mill :(
[00:32:58] * archivist giggles
[00:46:51] <tjtr33> when the plane landed in HongKong, all the little TFT screen were powering down.
[00:47:05] <tjtr33> I saw the linux penguin at top but the line shuffled out before I got a whiff of the distro used. cool tho.
[00:47:13] <tjtr33> Cathay Pacific
[00:48:32] <tjtr33> touchscreen media jukebox, maybe media-buntu
[01:05:34] <anarchos2> tjtr33, one time on an air canada flight i was able to bring up the window manager by flexing the beazel outwards and tapping "underneath" it
[01:05:53] <tjtr33> haha, thats cool
[01:05:53] <anarchos2> tjtr33, i couldn't do anything interesting, just thought it was kinda cool :P
[01:06:31] <tjtr33> i saw a hi speed spindle speed sensor sensor ( like up to 150Krpm) here http://www.chiarey.com/products-en.html
[01:06:31] <anarchos2> there was a desktop with two icons, one brought up the inflight entertainment system, and the other did nothing :P
[01:06:39] <anarchos2> well it popped up a black window and then did nothing
[01:06:47] <anarchos2> for 1/10th of a second
[01:07:19] <tjtr33> and i do know the guy so it is a shamelss plug ( but it works )
[01:07:41] <anarchos2> how much $$?
[01:07:44] <tjtr33> hmm the web page just loaded for me, you got unicode on? i only see the title on Big5
[01:08:12] <tjtr33> i didnt ask, but the guy was in CHina fighting cheap copies ( chasing cats )
[01:08:30] <anarchos2> tjtr33, no i meant the second icon on the in flight system popped up a black window for 1/10th of a second :P
[01:10:08] <tjtr33> again dunno, i drilled down thru 4 menues, 3 ways ( Big5/traditional & english )
[01:11:13] <tjtr33> since it doesnt touch he avoids the bearing speed issues of some european products
[01:11:54] <tjtr33> duh, make that Big5/simplified/english
[01:12:43] <tjtr33> dbl doh, the linux wndo mgr did that blank thing
[01:13:09] <tjtr33> hey i just spent 18 hrs in a chair!
[01:20:26] <tjtr33> gnite
[02:28:50] <Deejay> moin
[02:48:29] <digshadow> CaptHindsight: don't know if you remember me from earlier, but ended up install 12.04 and doing the instructions on the UpdatingTo2.6 page
[02:48:36] <digshadow> it all went reasonably smooth
[02:48:39] <digshadow> and cutting first part right now
[03:49:25] <MrSunshine> hmm i wonder at what temp a cpu starts to slow down ...
[03:49:38] <MrSunshine> had some thermal issues with the laptop ... it runs quite hot ... 80+ deg C :P
[03:50:05] <archivist> time to clean it
[03:50:12] <MrSunshine> did it not long ago :/
[03:50:24] <MrSunshine> im afraid the paste has hardened on the cpu/graphics card
[03:50:40] <MrSunshine> problem with this freakin thing is that it takes an hour to disassemble it to get to cleaning it
[05:59:36] <MrSunshine> heh, i think i found the problem with the thermal issues ....
[06:00:44] <MrSunshine> http://i62.tinypic.com/2ps15qe.jpg
[06:00:49] <MrSunshine> thats the graphics card thermal paste :P
[06:00:54] <MrSunshine> charred ...
[09:24:09] <PetefromTn_> Morning folks!
[09:42:39] <jdh> whuttup p3t3
[09:42:58] <PetefromTn_> meh not much you?
[09:43:11] <jdh> back from biking
[09:43:23] <PetefromTn_> finished up a tig welding job yesterday and just relaxing this morning.
[09:43:30] <PetefromTn_> Oh yeah what kind of biking?
[09:50:09] <jdh> plain old road biking.
[09:50:24] <jdh> did 101 miles yesterday. 15 today with my wife.
[09:50:39] <PetefromTn_> WOAH that is some serious riding man.
[09:51:19] <PetefromTn_> I ride my custom built short wheelbase recumbent bike with my wife and kids on the local greenbelt sometimes.
[09:51:22] <Jymmm> Motorcycle or Bicycle?
[09:51:28] <jdh> bicycle
[09:52:18] <Jymmm> Did you stop at every red light and stop sign?
[09:53:01] <jdh> perhaps.
[09:53:21] <Jymmm> Uh huh
[09:54:06] <jdh> zero lights yesterday. very few stop signs. it is a very rural route
[09:55:23] <PetefromTn_> Thats one nice thing about our local greenbelt....there are no stopsigns or traffic lights.
[09:55:56] <Jymmm> Around here, they are notorious for running lights in semi-busy intersections, with little to no visability of cross traffic. so I have litle empathy for them.
[09:56:05] <jdh> me either.
[09:56:49] <PetefromTn_> In fact the only time you have to stop is for a single road that crosses the greenbelt and there are lots of caution signs and warnings before you get there. We usually get off and walk across.
[09:56:54] <jdh> I do whatever is safest for me. Sometimes that involves running lights to avoid the traffic rush as the light changes.
[09:57:39] <PetefromTn_> Sometimes we head up into the Great Smokies National Park and ride around the Cades Cove Loop road. Beautiful scenery there.
[09:57:50] <jdh> but, I don't just run through them, I just leave before it changes, depending on light/traffic pattern
[09:58:00] <Jymmm> Most just blow thru the light. I don't even see them loking around for crosstraddic.
[10:30:40] * Loetmichel just sorted his LED-stash... it seems i am kind of a hoarder ;-) -> http://www.cyrom.org/palbum/main.php?g2_itemId=15253
[12:51:44] <XXCoder> http://lab.whitequark.org/notes/2014-07-08/cnc3020t-poor-positioning-accuracy/ interesting
[13:01:21] <kfoltman> Z 0.3mm off?
[13:02:21] <archivist> a lot for quality, a little for junk
[13:03:03] <XXCoder> kf yeah look on some chinese high quality work there too
[13:03:14] <kfoltman> XXCoder: "Third, apparently they also have forgot to lubricate the linear ball bearings; there is both no apparent lubricant and after wiping the rails with a tissue, the only thing that’s left is the rails metal, ground to fine powder."
[13:03:20] <XXCoder> exactly
[13:03:26] <kfoltman> I've seen it on my rails
[13:04:28] <XXCoder> theres good tips there too so I favorited it
[13:04:41] <XXCoder> I need to clean and lubucate my rails evenually which is from chinese
[13:04:52] <kfoltman> but, the "piece of teflon as a ballnut replacement" is probably a new low :D
[13:04:55] <archivist> a lot of stuff needs servicing before you use it
[13:05:59] <kfoltman> I'm just using some 3-in-1 instead of it running totally dry, there are probably some much better options
[13:06:23] <XXCoder> maybe lathinium grease or simple oil for me
[13:06:30] <kfoltman> lithium? :P
[13:06:38] <XXCoder> I wont add em till I can clean it off first
[13:06:48] <XXCoder> yeah lathinium grease lemme find it
[13:07:17] <XXCoder> http://www.homedepot.com/p/Blaster-11-oz-White-Lithium-Grease-16-LG/202529735?N=5yc1vZc24p
[13:07:35] <XXCoder> not too sure on what to use but one of options.
[13:08:27] <kfoltman> ok, so he's using "oil super lube" with PTFE for the bearings
[13:08:49] <XXCoder> Or maybe X-Y lube LOL
[13:09:02] <kfoltman> XXCoder: http://i.imgur.com/it7TAL4.jpg
[13:09:17] <XXCoder> fine work indeed
[13:09:23] <kfoltman> not VERY fine
[13:09:42] <XXCoder> I see couple error
[13:09:59] <kfoltman> I mean, the width is not consistent
[13:09:59] <XXCoder> but workable I see no cut or incomplete cut traces
[13:10:19] <XXCoder> ah yeah not quite correct
[13:11:02] <kfoltman> it's still within the spec, so I'm happy enough
[13:11:48] <kfoltman> it might matter more if I tried to go for finer pitch
[13:12:54] <XXCoder> probably could go around refining design so its more accurate
[13:14:47] <kfoltman> the guy in your article quotes some absurdly low speeds
[13:15:07] <kfoltman> I mean, 11.7mm/s maximum Z velocity?
[13:15:18] <XXCoder> damn
[13:15:20] <XXCoder> thats slow
[13:16:03] <XXCoder> heh at work couple parts was et to 5 ipm
[13:16:18] <XXCoder> half inch took few minutes lol and its not cutting anything
[13:16:22] <XXCoder> so i changed it to 25 :P
[13:17:04] <XXCoder> note that is with 10% speed so actually 0.05 ipm
[13:17:32] <XXCoder> its screwed up solidworks part :P but at end its fine
[13:18:32] <kfoltman> on the other hand, it's Z axis, you don't need a lot of speed there (in fact, less speed might be better, you get to hit the e-stop after typing z-20 instead of z20 by mistake :D)
[13:19:38] <kfoltman> they quote 3000mm/min which is about right
[13:25:35] <zbychuk> Hi. I did a test run of LinuxCNC LiveDVD od my most powerfull computer (motherboard MSI Z77A-GD80 and Intel Core i7-3770K CPU). I got Max Jitter of about 7500ns.
[13:27:10] <skunkworks_> powerful and good latency don't necessary go together
[13:27:17] <skunkworks_> but those numbers are good
[13:27:29] <zbychuk> The thing is that I don't want to use computer that powerfull for linuxcnc.
[13:29:27] <zbychuk> can you recomend a motherboard (I prefer MiniITX with Intel Atom) that will allow me to build a low power computer with low latecy.
[13:29:28] <XXCoder> kf interesting
[13:30:53] <skunkworks_> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Latency-Test
[13:31:34] <zbychuk> Or something with low cost intel processor with integrated graphics which has accelerated driver.
[13:32:48] <zbychuk> Thanks
[13:47:20] <CaptHindsight> zbychuk: are you going to use software stepping or an FPGA card?
[13:56:56] <Jymmm> What's a good way to remove surface rust while still trying to maintain a nice finish? http://img.auctiva.com/imgdata/1/0/3/7/6/3/2/webimg/782784443_o.jpg
[14:00:46] <CaptHindsight> Jymmm: are you looking for something like this? http://www.instructables.com/id/Electrolytic-Rust-Removal-aka-Magic/?ALLSTEPS
[14:01:29] <archivist> or very fine wet and dry paper after a light wire brush
[14:02:32] <archivist> I need to do some more before and after pics for the various methods
[14:04:24] <archivist> there is pitting on the plain part of that shaft, can never be perfect, depends on quality required
[14:05:20] <archivist> and it looks blued
[14:05:20] <Jymmm> CaptHindsight: That might work. Just not sure how to seal the ends well enough to NOT enter the barrel.
[14:05:37] <Jymmm> archivist: it is blued.
[14:05:58] <archivist> internally probably needs some treatment/cleaning too
[14:07:19] <CaptHindsight> Jymmm: maybe plug with wax
[14:07:30] <Jymmm> True, It's rifled, so I don't know how that would effect it
[14:07:54] <Jymmm> CaptHindsight: OH good idea! I have some museum max too!!!
[14:08:02] <Jymmm> wax*
[14:13:12] <JT-Shop> when you remove the rust you will be left with the pits the rust came from so not a smooth surface anymore
[14:15:04] <CaptHindsight> yeah, the rsut in that pic looks as deep as the stamped markings
[14:15:27] <Jymmm> JT-Shop: wet sand paper?
[14:15:37] <archivist> take to an expert to refinish
[14:16:02] <Jymmm> archivist: I'm not trying to restore it, just mostly clean it up.
[14:16:33] <Jymmm> Then apply "something" to protect it.
[14:17:11] <archivist> you may get away with a cold gun blue preparation, try on some scrap first
[14:17:35] <Jymmm> Can do
[14:18:03] <Jymmm> There's a "Hot" bluing?
[14:18:39] <archivist> real bluing is hot but that may affect the metal
[14:18:51] <Jymmm> ah, ok.
[14:19:14] <Jymmm> affect in what way? temper?
[14:19:27] <archivist> I have no idea what temper barrels are left in
[14:19:47] <Jymmm> Gotcha.
[14:20:55] <JT-Shop> a bath in HCL then baking soda will remove all the rust
[14:21:22] <Jymmm> Actually, may not be a big deal. Since I don't have a lathe, I'm just using old barrel to make a 12ga flare gun, so it may not matter too much.
[14:24:35] <zbychuk> I will use software stepping
[14:27:02] <CaptHindsight> zbychuk: linuxcnc is only up to kernel 3.4 with RTAI in the official release, the accelerated drivers for some of the newer intel mini-itx boards require 3.12
[14:28:38] <CaptHindsight> zbychuk: we have RTAI working with 3.14 but it's not in the official release yet
[14:30:59] <zbychuk> CaptHindsight: I run LinuxCNC DVD on my big computer without any changes in the BIOS. I have d2700mud motherboard, but i got 35000ns max jitter. If I will get about 7000ns or less on some low cost system the I will be fine.
[14:32:33] <zbychuk> CaptHindsight: where i can get unofficial release?
[14:33:14] <CaptHindsight> zbychuk: there are no deb packages yet, you'd have to build the kernel and RTAI from scratch
[14:36:03] <CaptHindsight> zbychuk: https://github.com/NTULINUX/RTAI if you care to build it yourself
[14:37:06] <CaptHindsight> only tested on AMD so far
[14:40:57] <JT-Shop> some nut from Cali thinks I'm going to answer his text "is it still for sale?"
[14:41:48] <archivist> answer I dont know
[14:42:08] <Jymmm> JT-Shop: "Yes, but at double the price"
[14:47:58] <Tom_garage> JT-Shop what's your number so we cal all randomly txt you!
[14:52:34] <JT-Shop> just put your cell number up here and I'll text you LOL
[14:58:11] <Tom_shop> 555-1212
[14:59:08] <Jymmm> JT-Shop: 1-866-723-3697
[15:03:48] <JT-Shop> no answer
[16:08:24] <asah> anyone around to check my head on AC induction motor wiring?
[16:08:39] <asah> I am hooking up my spindle to my vfd
[16:08:46] <asah> and motor has 6 wires.
[16:09:24] <asah> U1 V1 W1 and U2 V2 W2
[16:09:49] <asah> motor is labeled 380/660v
[16:10:05] <asah> and was originally setup with star start and delta run.
[16:10:25] <asah> I now am going to feed it with a VFD capable of feeding it 380V.
[16:12:37] <asah> Should I run these leads in parallel or series in my new VFD application? My inclination is to run them in series, but I am not entirely sure what the correct way to do that is.
[16:13:35] <asah> the schematics for the original mill has all three of the 2 phases(U2 V2 W2) wired together in the delta configuration.
[16:14:22] <asah> which makes sense.
[16:14:54] <asah> would love another opinion
[16:15:28] <asah> https://www.dropbox.com/s/o3seghxeooyyxf6/maho_400e_schematics_03.png?dl=0 is the original schematic setup.
[16:31:00] <Deejay> gn8
[16:58:16] <Nick001-shop> The motor plate should have the connections for 380 /660v. I would check that first to see what it's currently wired for
[17:20:42] <archivist> asah, series/parallel are wrong for 3 phase motors, it is either Y (star) or delta, the connection cover should have the wiring diagram
[17:21:01] <archivist> but you can work it out
[17:22:32] <asah> this site has some info: http://www.electricmotorwarehouse.com/motor_connection_diagrams.htm
[17:22:46] <asah> says for delta: U1,W2 V1,U2 W1,V2
[17:25:18] <archivist> you can test with a meter to check where the coils(windings) are
[20:03:24] <zeeshan> https://www.huronindustrial.com/image/cache/data/products/1-855-65599-500x500.gif
[20:03:25] <zeeshan> man
[20:03:28] <zeeshan> digital tape!
[20:03:31] <zeeshan> i gotta get one of these
[20:12:23] <CaptHindsight> I wonder how many drops before it dies?
[20:13:39] <zeeshan> lol
[20:13:53] <zeeshan> i dont tend to drop my tools!
[20:14:57] <LeelooMinai> They forgot the metric system for it though - useless:)
[20:15:55] <CaptHindsight> i wonder if they have figured out how to mount those two rivets. Most tape measures have 1/32 - 1/16 inch of lash at that point
[20:16:53] <CaptHindsight> good enough to cut lumber
[20:16:53] <LeelooMinai> It's just a matter of calibration and quality control.
[20:19:01] <LeelooMinai> I wonder how the read the displacement.
[20:19:10] <LeelooMinai> they*
[20:19:49] <LeelooMinai> Since they have just steel tape, not something that actually has embedded reference points, like in digital callipers.
[20:19:49] <zeeshan> it has metric
[20:19:59] <zeeshan> its got a bar code
[20:20:01] <zeeshan> that it picks up
[20:20:21] <LeelooMinai> That was my first thought, but it can get scratched
[20:20:29] <LeelooMinai> Scratched off even
[20:20:42] <zeeshan> dont abuse your tools
[20:20:50] <zeeshan> =]
[20:20:58] <LeelooMinai> zeeshan: Is the code on the other side of the tape?
[20:21:04] <zeeshan> yea
[20:21:32] <LeelooMinai> My bet it's overpriced - as anything from that brand, no?
[20:21:42] <zeeshan> they dont make them anymore
[20:21:47] <zeeshan> i found one new for $15
[20:22:01] <zeeshan> quality comes with a price
[20:22:05] <zeeshan> :)
[20:22:11] <LeelooMinai> Sometimes
[20:22:24] <zeeshan> majority of the times
[20:22:37] <LeelooMinai> I wonder why they don't make them any more
[20:22:38] <zeeshan> but not everyone needs quality
[20:23:25] <zeeshan> prolly didnt sell enough
[20:24:07] <LeelooMinai> I just ordered mesa kit - was saving for it for two months
[20:24:17] <LeelooMinai> I hope I won't be sorry:)
[20:28:13] <jdh> it won't change your life.
[20:28:37] <PetefromTn_andro> It might..
[20:28:51] <jdh> if so, you were in serious need of a change :)
[20:29:00] <jdh> in which case, congrats!
[20:29:31] <zeeshan> lol jdh
[20:29:35] <zeeshan> finish your lathe
[20:30:22] <LeelooMinai> It will change it - just a little:p
[20:32:02] <zeeshan> mqan
[20:32:10] <zeeshan> i forgot to mill flats onto these indenters
[20:32:11] <zeeshan> =/
[20:34:46] <PetefromTn_andro> I started machining the damn encoder mounts today finally LOL
[20:35:00] <jdh> about damned time.
[20:35:09] <zeeshan> jdh finish your lathe
[20:35:12] <PetefromTn_andro> I'll say jeez hehe
[20:35:16] <jdh> it's bike season, not lathe season.
[20:37:24] <PetefromTn_andro> Just realized that when I switched over to this new smartphone from my old LG phone I forgot to add viber to it so my friend in New Zealand who also has a Cincinnati Arrow 500 in the retrofit stages has not been able to contact me for several weeks Doh!!
[20:37:49] <PetefromTn_andro> Poor Brendan...
[20:52:46] <PetefromTn_andro> Hehe just tried it after downloading the app and contact him and he was like where did ya go man LOL......
[21:02:28] <PetefromTn_andro> Ran the machine today making that encoder mount and it sure was nice to hear an almost silent spindle....kickass
[21:03:53] <PetefromTn_andro> Anything under about 4k and you can't hardly hear anything.
[21:07:50] <PetefromTn_andro> Talking to myself in here it seems. Hah
[21:22:15] <jdh> what's a viber?