#linuxcnc Logs

Feb 28 2017

#linuxcnc Calendar

12:46 AM MacGalempsy: well just finished 1984. what a creepy book
01:29 AM MacGalempsy: xxcoder how is the dust factory going?
02:31 AM MrSunshine: http://a360.co/2lrH5h4 anyone has any idea of how i would hold this part to mill the long sides of it where the linear berings go .. im thinking 3 point as its subject to twist when its so long .. (its 1472mm long)
02:39 AM Deejay: moin
03:49 AM MacGalempsy: which part are you trying to hold?
03:49 AM MacGalempsy: that looks like a whole assembly
04:43 AM enleth: drinking game idea: watch Jimmy DiResta's videos and chug a shot each time you see "DIRESTA" painted on something
04:54 AM XXCoder: MacGalempsy: its off for week heh
04:55 AM MacGalempsy: too much sucess?
05:07 AM XXCoder: nah cant run machine too tired after work
05:13 AM MacGalempsy: ah ok
05:13 AM XXCoder: how about ya
05:14 AM MacGalempsy: slow drilling and watching team fighting championship on youtube
05:14 AM XXCoder: fancy
05:14 AM MacGalempsy: have about another week on location then should move to another rig
05:15 AM MacGalempsy: hoping to get about 45 days before going home for a week or two
05:20 AM -!- #linuxcnc mode set to +v by ChanServ
05:24 AM jthornton: morning
05:24 AM XXCoder: hey jt
05:27 AM jthornton: what's up today
05:27 AM XXCoder: bvoring work
05:29 AM XXCoder: you?
05:29 AM jthornton: I was threading some 3/8" stress proof on the CHNC last night that was just long enough to not be able to load from the front and too short to get through the collet from the back what a pia
05:30 AM jthornton: just waking up
05:32 AM XXCoder: doh
05:32 AM XXCoder: that sweet annoying spot
05:32 AM jthornton: yea took a piece of delrin rod and drilled a hole in the end to push them in with
05:35 AM XXCoder: lol in least it works
05:57 AM MacGalempsy: well, made it thru another shift of slow drilling so slow i didnt even have to do any reports
05:57 AM MacGalempsy: eeked out by 15 minutes
05:58 AM XXCoder: eeked?
05:58 AM jthornton: truck rig?
05:59 AM MacGalempsy: no the drilling rig. the data came in 15 min after my shift ended
05:59 AM MacGalempsy: big boy. kb is 42ft above ground
06:00 AM jthornton: dang that is a big one
06:00 AM MacGalempsy: 42k lb top drive
06:00 AM MacGalempsy: https://flic.kr/p/SfVu5T
06:00 AM MacGalempsy: td is +25k ft
06:01 AM jthornton: I used to work on offshore jack up rigs and once on a small truck rig
06:02 AM jthornton: spent 3 years drilling in west africa
06:02 AM MacGalempsy: sounds like an adventure
06:03 AM jthornton: http://www.wotol.com/images/thumbs/800x800/1267208_21829b9442e917796739ea4826e5dba1.jpg
06:03 AM MacGalempsy: we averaged 15ft/hr tonight. at this rate we'll have another week on location if there are no more trips
06:03 AM jthornton: most of them like that
06:04 AM MacGalempsy: do the pillars go all the way to the ocean floor?
06:04 AM jthornton: one hole off of Pensacola we went 27,000 feet and tripped pipe every stinking day I was a derrick man on that rig
06:05 AM jthornton: yea thay have tear drop shaped tanks on the bottom
06:05 AM MacGalempsy: damn. i got here 11 days ago and we have tripped 3 or 4 times
06:05 AM jthornton: we could drill in 400 foot or so water
06:06 AM XXCoder: drilling water heh
06:06 AM MacGalempsy: ok. this one goes down 14000 then goes horizontal for about 2 miles
06:07 AM Spida: trip == broken drill?
06:07 AM jthornton: yea
06:07 AM jthornton: prob have much better bits now
06:07 AM MacGalempsy: usually but sometimes the motors go out or the batteries die
06:08 AM jthornton: the platforms did directional drilling one straight down and they other 31 went out
06:08 AM MacGalempsy: we use pdc bits now. this is pretty abrasive stuff
06:08 AM jthornton: what is pdc?
06:09 AM MacGalempsy: poly diamond carbide
06:09 AM jthornton: rotary bits?
06:09 AM MacGalempsy: no cones. just carbide buttons
06:09 AM jthornton: neat
06:10 AM MacGalempsy: http://www.slb.com/services/drilling/drill_bits/type/pdc_bits.aspx
06:10 AM MacGalempsy: a new one is lime 35k
06:10 AM MacGalempsy: like*
06:11 AM MacGalempsy: ive seen a video on utube of the bodies being printed with an sls printer
06:11 AM MacGalempsy: then the carbides brazed in
06:13 AM MacGalempsy: polycrystaline diamond compact is the right wording
06:21 AM Longbow: Hello, where do you set the servo-period[ns]? in .hal or .ini files?
06:23 AM jthornton: it could be in either one
06:24 AM XXCoder: lol https://www.youtube.com/watch?v=08kSncpUnUo
06:34 AM MacGalempsy: haha. wtheck
06:46 AM jthornton: dang I have 2.1 Gb of data to use today I can surf all day but I'll be gone most of the day lol
06:52 AM jthornton: hmm the SSD's didn't last long only had them for a few days and they are all gone now
06:57 AM MacGalempsy: sweet. good profit margin?
06:59 AM MacGalempsy: you going to sell full systems next?
06:59 AM jthornton: ok profit
07:00 AM MacGalempsy: i'll probably order a 7i76e soon
07:01 AM jthornton: thanks
07:02 AM MacGalempsy: tossing up between another j1900n-d3v and the h81n
07:03 AM MacGalempsy: the whole system diff is about $50
07:04 AM jthornton: I forget which one I have that has 2 onboard ethernet ports but that is handy for uspace
07:05 AM MacGalempsy: the d3v has 2 ports, but it wont run the ip cam while running lcnc
07:24 AM jthornton: dang the price went up on the SSD's
07:50 AM chopper791: I need to wait on buying a used lathe unitl everyone is done spending their tax returns. The prices of lathes in my area has doubled the past couple weeks.
08:07 AM JT-Shop: people are getting tax refunds already?
08:15 AM Todd_Z: Just because they havn't gotten their returns doesn't stop a lot of people from spending them.
08:20 AM gonzo_: then when they don't get the m,oney, there will be some panic sales
08:25 AM JT-Shop: lol
08:25 AM JT-Shop: last time I used a CC was to get materials to build my house when I ran out of cash
08:27 AM * JT-Shop had to walk out and look at the date in the concrete... 19 years ago
09:00 AM gregcnc: Prices haven't doubled, people are fishing for those with tax return money who don't know any better.
09:07 AM gregcnc: finboyslick ! just saw your thread milling, that feed is crazy high
09:18 AM FinboySlick: gregcnc: It worked wonderfully.
09:18 AM gregcnc: plastic?
09:18 AM FinboySlick: polycarbonate, yes.
09:20 AM gregcnc: you'll want to compensate feed when tool radius is appraoches hole radius. it will be a problem in metal
09:21 AM FinboySlick: The trickiest part was lining up the hole. Since my mill isn't straight and the thread mill is twice as long as the endmill used to cut the hole, my first attempt only had threads on one side of the hole.
09:22 AM FinboySlick: It's a real pain in the ass to use. So eager to have a proper work space to take it apart and line it up properly.
09:22 AM gregcnc: that's seems like a lot out of square
09:23 AM FinboySlick: Yeah. To quote AvE, it's made out of the finest chinesium.
09:24 AM FinboySlick: The rail supports aren't flat either.
09:24 AM FinboySlick: It twists.
09:26 AM gregcnc: I like thread milling though
09:33 AM FinboySlick: gregcnc: I'm kind of flattered that you'd notice the video. I was about to link it here and show off.
09:34 AM gregcnc: i have a linuxcnc search bookmarked for YT
09:34 AM gregcnc: it's fun to see what people are doing with it
09:35 AM gonzo_: and all the unrelated hits of cat videos that YT seems to think it can insert into the search hits
09:35 AM seb_kuzm1nsky is now known as seb_kuzminsky
09:36 AM gregcnc: not many cat videos tagged with linxucnc
09:36 AM gonzo_: unless people are milling cats. (I'd watch that!)
09:37 AM jdh: cats milling parts
10:05 AM gonzo_: they would get bored
10:07 AM FinboySlick: My cat will happily 'mill' a ball of aluminium foil.
10:08 AM FinboySlick: But he doesn't run LinuxCNC. In fact, doesn't even have a real-time kernel so his movements are a bit erratic.
10:11 AM archivist: sleep, feed, mad half hour, back to sleep
10:21 AM Deejay: re
11:40 AM Loetmichel: *meh* that STINKS at the company. The workshop still like Pertinax from yesterday megadrilling, around my work desk it now stinks like burned PVC... bent a shitload of 3mm PVC foam sheets into enclosures today... with a micro torch ;)
12:15 PM gregcnc: somebody here needs this little benchman VMC www.ebay.com/itm/112318621055
12:21 PM OSR_Dragon: there is a pair of those up for sealed bid listed on craigslist in Iowa right now
12:25 PM gregcnc: Wow those have the toolchanger
12:26 PM gregcnc: that's what macgalempsy is working on
12:30 PM CaptHindsight: http://www.ebay.com/itm/Turner-Tech-CNC-benchtop-mill/292038435717 never heard of them
12:36 PM jdh: pretty cheap
12:39 PM CaptHindsight: loks like they tried to have a website back ~2003
12:57 PM Tom_L: wonder what that first one weighs
01:01 PM OSR_Dragon: I think they are just over 1000#
01:01 PM OSR_Dragon: options like tool changer, etc. would add to it
01:02 PM OSR_Dragon: they have a solid composite structure and the ways are linear bearings attached to it
01:02 PM OSR_Dragon: they use ball screws and servo motors
01:06 PM CaptHindsight: just FYI Grainer.com is clearing out lots of hex socket screws for $1-5/box of 100
01:08 PM CaptHindsight: 1/4-20. 5/16-18, M4-0.7, etc
01:09 PM CaptHindsight: I just got a bunch in and the boxes are old and dirty but the fasteners are in sealed bags
01:09 PM OSR_Dragon: does anyone know if a Glentek SMA8215 can be used to drive a brush type servo motor in current mode?
01:14 PM gregcnc: may depend on the specific model you have
01:17 PM OSR_Dragon: well I noticed a bunch of SMA8215-SAT-1C for cheap on ebay and I have some brush motors I need to drive
01:41 PM lunada: hi
01:43 PM lunada: somewhat off topic, but does anyone have a good idea for a switch for a super harsh enviroment? Something that will handle a concrete plant, being covered in wet and dry concrete all day
01:44 PM CaptHindsight: search the Google for "explosion proof switch"
01:44 PM lunada: i'm building a pump for pumping concrete and i want to put 2 switches on the spray gun, but anything i've seen will get destroyed in a week
01:44 PM lunada: ooh ok
01:45 PM lunada: thanks, i'm looking now
01:45 PM CaptHindsight: not cheap but it don't blow up real good and they are gas/water proof
01:46 PM lunada: it's the concrete drying on the switches that causes a big issue
01:47 PM _methods: the switches can't be enclosed somehow?
01:48 PM lunada: not really but it generally gets on there from people's hands
01:48 PM CaptHindsight: well not much you can do about preventing them from being encased it concrete if you don't keep the wet concrete off them
01:49 PM lunada: yea it's a tough situation
01:49 PM CaptHindsight: best bet is to keep the wet concret off them or rinse the concrete off before it sets
01:50 PM lunada: i was ahlf thinking of burying a prox switch in the handle and have a durable metal lever move within range of it
01:50 PM lunada: half*
01:50 PM lunada: it's a nice thought CaptHindsight, but realistically wont happen
01:50 PM _methods: what about something like a knife switch
01:51 PM CaptHindsight: we'd have to see the location, if the switch is buried in concrete how will you solve this?
01:51 PM lunada: i guess i should mention it needs to be small enough to put on a spray gun
01:51 PM _methods: yeah kinda hard to recommend without a little more info
01:51 PM CaptHindsight: so you'll need to provide a better description of the situation
01:52 PM lunada: http://www.power-sprays.com/wp-content/uploads/2015/09/Concentric-GFRC-GRC-Spray-Head-1024x768.jpg
01:52 PM lunada: that's basically what the gun looks like
01:53 PM lunada: it shoots wet concrete and fiberglass fibers. i need to turn the pump on and off that supplies the gun, as well as an air solenoid
01:53 PM CaptHindsight: so it's not being covered in concrete
01:53 PM lunada: it is, because the operator will have concrete on their hands when they turn it on and off
01:54 PM CaptHindsight: replaceable condom
01:54 PM CaptHindsight: it's like a any other hand held spray gun application
01:54 PM lunada: hmm yea
01:55 PM _methods: and the switch "has" to be on the gun?
01:55 PM CaptHindsight: you either keep the stuff off of it or you make it washable
01:56 PM lunada: CaptHindsight i'd be ok with it getting on the switch if it could be scraped off without breaking the switch or any associated parts of the switch
01:56 PM CaptHindsight: stuff =, paint, concrete, secret sauce, etc
01:56 PM lunada: methods, yea.... they want it on the gun
01:56 PM _methods: hmm
01:56 PM lunada: pain in the butt, i know.
01:56 PM _methods: that makes it significantly more difficult
01:57 PM _methods: maybe look at some vandal resistant switches
01:58 PM lunada: yea i can look into that
01:58 PM lunada: i ran out of google search terms so this is helping lol
01:58 PM CaptHindsight: didn't they die off in the 5th century? :)
02:00 PM lunada: didn't what die off?
02:00 PM _methods: the vandals
02:00 PM _methods: lol
02:00 PM _methods: no there is still one of them alive unfortunately
02:00 PM lunada: ah lol
02:02 PM lunada: hmmmmmm i wonder if there's a way to have them wear a bracelet with something that would trigger a switch when it comes within a certain range, like an inch or so
02:03 PM jdh: wireless sphincter switch
02:03 PM CaptHindsight: or something oral
02:04 PM CaptHindsight: but it has to be on the gun itself?
02:04 PM lunada: yes! wireless sphincter switch, operated orally
02:04 PM CaptHindsight: HAS TO BE?
02:05 PM lunada: well i cant have them fumbling for a switch or turning around to find it
02:05 PM CaptHindsight: how about a squeeze bulb?
02:06 PM lunada: actually not a bad idea if it's doable
02:06 PM CaptHindsight: made of polynonconcrtestickahtnae
02:07 PM lunada: lol
02:07 PM CaptHindsight: and it will wear out so you can sell them a consumable
02:08 PM lunada_: got bumped
02:09 PM Todd_Z: something water proof that can be dunked and soaked in acid to clean it, but is still cheap and easy to replace.
02:10 PM lunada_: acid would eat the gun anyway lol
02:11 PM CaptHindsight: air switch
02:11 PM lunada_ is now known as lunada
02:12 PM CaptHindsight: http://www.spaguts.com/products/air-button-white-with-4ft-air-tubing-kit-239.aspx?gclid=COfkl6fGs9ICFUa2wAod0twGkg
02:12 PM lunada: it's more of the mechanism failing than an electrical issue i think
02:13 PM lunada: the toggle switches fail mechanically
02:13 PM Jymmm: hal senser and a magnet
02:13 PM Jymmm: $2
02:14 PM Jymmm: encase both is something durable; shrink tubing, silicone, etc
02:14 PM lunada: tht's what i was thinking Jymmm
02:14 PM CaptHindsight: the magnet would have to be bonded to their finger
02:14 PM lunada: medical implant
02:15 PM CaptHindsight: aluminum ring with magnet
02:15 PM Jymmm: the milky clear PE tubing (like used in water supply lines for ice makers) works grat and NOTHING sticks to it
02:15 PM lunada: yep thats already used on the gun for air Jymmm
02:15 PM Jymmm: fill ends with clear silicone
02:15 PM CaptHindsight: again very lose-able so you can sell replacements for $100ea
02:15 PM lunada: lol
02:16 PM lunada: i was thinking an inductive prox switch but a hall switch would work too
02:17 PM CaptHindsight: https://i.cbc.ca/1.2183872.1382508880!/httpImage/image.jpg_gen/derivatives/original_300/brain-scan-cp-6489806.jpg
02:17 PM Tom_itx: http://www.gamainc.com/wpc/?gclid=CjwKEAiA3NTFBRDKheuO6IG43VQSJAA74F77oPCpivu-ZLnJjqyTnSGom26XR3ZM5INkxPoqizoSjRoCUUnw_wcB
02:17 PM lunada: yea i can make a mold and encase it in urathane or silicone
02:18 PM CaptHindsight: activates only when the operator thinks about something unique
02:18 PM lunada: lol
02:19 PM Tom_itx: http://www.nauticexpo.com/boat-manufacturer/waterproof-switch-27452.html
02:19 PM lunada: wireless would be cool too. i think i like the hall switch idea
02:20 PM lunada: thanks guys. knew i could count on you all lol
02:22 PM JT-Shop: what's up Tom_L
02:23 PM Tom_L: been working on a pc setup
02:23 PM CaptHindsight: magnet in squeeze ball with hall sensor
02:24 PM Tom_L: i say hang 2 wires out and let them touch em together
02:24 PM JT-Shop: making parts here
02:25 PM Tom_L: or solder them to magnets. encapsulate the magnets in epoxy except the contact surface and join the magnets when you want it on
02:25 PM CaptHindsight: lunada: beware of finger fatigue and and repetitive motion injuries down the road
02:26 PM CaptHindsight: replaceable silicone cap on a decent switch
02:31 PM Tom_L: JT-Shop, trailer parts/
02:31 PM Tom_L: ?
02:31 PM Tom_L: trike rack...
02:33 PM JT-Shop: no, for the husky cover test machine
02:36 PM Tom_L: kinda boreing here when everybody's stuff is working an no builds are feverishly in progress
02:42 PM CaptHindsight: I found a PC with 200K latency jitter for the servo thread and 25k for the Base
02:43 PM CaptHindsight: using the stock RTAI kernel in Lcnc 2.7.8
02:44 PM Tom_L: do latency numbers vary depending on the version or flavor of lcnc you test it with?
02:45 PM JT-Shop: varies with the kernels
02:45 PM CaptHindsight: just different kernel versions
02:46 PM CaptHindsight: I haven't tried any of the Lcnc kernels in the past 2 year except for the current
02:46 PM JT-Shop: my wife just discovered the foamy I bought 6 months ago lol
02:47 PM Tom_L: you were able to hide it for 6mo??
02:51 PM JT-Shop: no, it's right next to her car lol
02:51 PM JT-Shop: she spotted the new transmitter case
02:53 PM JT-Shop: she just said your going to start flying again?
02:53 PM JT-Shop: I said yep
03:36 PM JT-Shop: heres some excitement I just ruined a part
03:36 PM XXCoder: aw
03:37 PM XXCoder: I just had a thought, jt. you have mill, can cut foamy parts lol
03:38 PM JT-Shop: I don't think it mills very well :)
03:39 PM rob_h: just turn on the coolant and cut it with that ;)
03:40 PM XXCoder: pink had a project where she made a part made from foam. worked apparently.
03:41 PM sync_: it depends on the foam
03:41 PM JT-Shop: hmm I think I stopped the drill in time now it's just a machining hole
03:41 PM JT-Shop: this EPP stuff is pretty soft and light
03:42 PM roycroft: if i get some ball screws and need to turn the ends, and have a capable lathe, is it realistic to try to turn them with ceramic insert tooling, or is using a tool post grinder to remove the hardened case really necessary?
03:43 PM sync_: you an just turn them with cbn
03:43 PM sync_: +c
04:01 PM cradek: I think even carbide can work fine, just be bold and cut through the case hardening in one pass
04:01 PM rob_h: carbide will turn them they are not that hard once get under the top layer the rest is soft
04:04 PM roycroft: yeah, i know they're only case hardened
04:04 PM roycroft: the problem may be that if i have to turn the threaded part at all it will be interrupted cuts
04:05 PM roycroft: and carbide isn't too happy about that
04:05 PM roycroft: i presume ceramic less happy
04:05 PM roycroft: i've never used ceramic inserts
04:05 PM rob_h: just use a good insert and all be fine
04:05 PM rob_h: last screw we turned was all screw thread, and just put the bearing support parts on it and away we went
04:06 PM rob_h: was a class 5 screw
04:06 PM sync_: it is not an issue roycroft
04:07 PM roycroft: i'd like to get a toolpost grinder, but if i get my new lathe soon it's going to push the budget to its limits and possibly beyond
04:07 PM roycroft: the tpg will have to wait a while
04:08 PM roycroft: so if i can do this with carbide insert tooling that would be brilliant
04:08 PM rob_h: find a cheap grinder on ebay instead
04:10 PM JT-Shop: 5 seconds of machining then 15 minutes of break down and set up for the next op...
04:13 PM JT-Shop: wow this prox from automation direct is made in Germany
04:25 PM andypugh: Turning ballscrews?
04:26 PM andypugh: roycroft: Just use a small feed (0.05 mm/rev and depth of cut (0.3mm) and run at 120 m/min surface speed.
04:27 PM andypugh: Should look like this: https://www.youtube.com/watch?v=SmuZXXP_hMY
04:30 PM roycroft: i would be turning the ends of ball screws, for bearings
04:30 PM roycroft: not making ball screws
04:30 PM andypugh: That is what I assumed
04:31 PM roycroft: or erasing ball screws, as you're doing in that video
04:32 PM andypugh: I have done it several times now, just keep the cut small and the speed very (very) high so that the swarf comes off practically molten.
04:32 PM roycroft: ok
04:32 PM andypugh: “Hard Turning” is the process and the best description I heard of it was “single point grinding”
04:33 PM roycroft: and you're using tooling with a carbide insert?
04:34 PM andypugh: I have done. I have some CBN inserts too, but a carbide insert can do both ends of a ballscrew. It wouldn’t do production volumes. though.
04:35 PM roycroft: i would need to turn both ends of three ball screws
04:35 PM roycroft: that doesn't count as production, i should think
04:36 PM roycroft: i just found a nice article by sandvik hard turning with cbn inserts
04:42 PM Deejay: gn8
05:14 PM _methods: roycroft: in a pinch you can grind down below the hardening then turn as normal
05:14 PM _methods: with a hand grinder
05:14 PM _methods: better than trying that ghetto annealing with a towel wrapped around it
05:15 PM andypugh: There really is no need. Carbide machines ballscrews just fine.
05:15 PM _methods: yeah
05:15 PM _methods: i always just do it with carbide unless it's production or something then obviously you need to start lookin at pcd/cbn stuff
05:16 PM sync_: pcd will not work
05:16 PM sync_: it will just go into solution
05:18 PM _methods: i was talking about hard turning in general
05:30 PM roycroft: cbn is a lot more expensive than carbide
05:30 PM roycroft: for this application carbide seems like it would do fine
05:31 PM roycroft: i have some ball screws that i bought for another project that is still on the back burner
05:31 PM roycroft: one of them is way too long
05:31 PM roycroft: so i could cut some chunks off of that to practice machining on it
05:31 PM _methods: yeah i wouldn't be using pcd/cbn unless it was a production paying job
05:33 PM andypugh: How on earth do you create a zip from a folder in Wheezy?
05:33 PM _methods: apt-get install zip
05:33 PM _methods: ?
05:33 PM roycroft: tar cfp dirname.tar dirname :)
05:33 PM roycroft: and leave zipping to the windows folks :)
05:33 PM _methods: probably doesn't come with zip
05:33 PM andypugh: right-clicking a folder opens a likely-looking dialog, but the only “action button” is “New” and that just creates a new empty folder
05:34 PM roycroft: my recollection is that zip contains/contained patented code
05:34 PM roycroft: and the linux and bsd folks generally provided an unzip utility
05:34 PM roycroft: but not a zip utility
05:34 PM andypugh: No, that really isn’t the problem here.
05:34 PM _methods: yep
05:34 PM roycroft: because of that
05:34 PM andypugh: It’s the GUI which is working in a baffling way
05:34 PM _methods: so what program is installed for zipping?
05:34 PM andypugh: (ore not)
05:34 PM andypugh: No idea
05:35 PM _methods: are you sure you have anything installed capable of zipping?
05:35 PM andypugh: But I can right-click a folder and it offers me the option to create an archive. But I can’t figure out what it wants next
05:35 PM roycroft: i bet it's a tar archive, not a zip archive
05:35 PM _methods: yeah probably can tar it
05:36 PM andypugh: No, I really can’t do anything
05:36 PM roycroft: i've almost no experience with a linux desktop environment
05:36 PM roycroft: in fact, the only linux machine i have that has one is my linuxcnc machine
05:36 PM roycroft: everything else just boots to a command prompt
05:36 PM andypugh: Or, at least, I can’t seem to press the correct buttons to get a file to be created. Of any sort
05:36 PM roycroft: that's why i'm being mostly useless here
05:38 PM _methods: thunar is the file manager right?
05:38 PM andypugh: Well, I managed to get a tar archive, but it didn’t end up where I told it to put it (it ended up inside the folder i was trying to compress) but never mind.
05:38 PM _methods: sudo apt-get install thunar-archive-plugin
05:39 PM _methods: if i remember right thunar is the default file manager on wheezy
05:39 PM _methods: nowhere near my linuxcnc install right now sorry
05:40 PM andypugh: _methods: I have the plug-in. I have a right-click option that acts like it will let me create an archive. It is just that the dialog that appears doesn’t make any sense, and just seems to want to create and open folders.
05:40 PM _methods: andypugh: i'm assuming this is a linuxcnc install cd version with xfce
05:40 PM _methods: hmm that's weird
05:45 PM andypugh: Bah! I can’t attach a .tar archive to a forum post
05:45 PM _methods: doh
05:48 PM JT-Shop: andypugh: try again
05:48 PM andypugh: I deleted the .tar archive now...
05:49 PM malcom2073: Don't upload uncompressed files? :-P
05:49 PM JT-Shop: I just added tar
05:50 PM roycroft: are you also adding feathers?
05:52 PM andypugh: OK, done, using the command line. Odd that the GUI pretended to be able to do it, but didn’t.
06:13 PM JT-Shop: http://gnipsel.com/images/husky-cover-tester/husky-cover-tester-08.jpg
07:21 PM MacGalempsy: evening
07:24 PM malcom2073: Hi
07:25 PM MacGalempsy: whats going on in PA today?
07:25 PM malcom2073: Not much, just some rain
07:26 PM MacGalempsy: pretty much the same here sans rain
07:27 PM BeachBumPete: evening
07:28 PM MacGalempsy: hey pete. sunny and brilliant in FL?
07:28 PM MacGalempsy: i guess its dark now
07:29 PM BeachBumPete: actually today was quite rainy most of the day
07:30 PM MacGalempsy: no bueno
07:30 PM BeachBumPete: Well I was inside a nice house down south here all day installing some dark Cherry Crown molding in a kitchen so I did not really see much of it
07:30 PM malcom2073: My boss went to FL today
07:31 PM malcom2073: So I had a nice bossless day today, got a lot done heh
07:32 PM BeachBumPete: I have a meeting with my boss tomorrow morning about a large project they want me to head up and build. Not sure what to think of it quite yet... They did mention some more money so that might work depending on the circumstances anyway
07:33 PM malcom2073: I've been working on getting a pick-and-place working... I miss linuxcnc
07:34 PM MacGalempsy: heh. what u pick and placing?
07:34 PM malcom2073: circuit boards!
07:35 PM malcom2073: The machine is a piece of shit though. I've already had to diassemble it just to square up the X/Y table
07:41 PM malcom2073: It'spretty cool to watch it pick up and place a bunch of pieces that are almost too small to see
07:43 PM MacGalempsy: makin that money for the man!
07:44 PM MacGalempsy: giving you any idea on some projects?
07:45 PM malcom2073: Yeah, I wanna make my own pick and place
07:45 PM malcom2073: I mean... we paid near $10k for this machine
07:46 PM malcom2073: it's SERIOUSLY about $100 of 80/20, and about $100 of linear railing, $300 of steppers and belts, and a couple other random things
07:46 PM MacGalempsy: sweet. make one.
07:47 PM Wolf_: at one point I was thinking about doing a pick’n place
07:47 PM malcom2073: I have actuators laying around, I think I will. Either before, or after my 5x10 router
07:47 PM malcom2073: dunno :)
07:47 PM Wolf_: hardware is kinda simple, its the software that is a bitch
07:48 PM malcom2073: There is some *really* nice open source pick and place software
07:48 PM malcom2073: that apparently works pretty good with USB webcams
07:48 PM malcom2073: USB webcam, LED lights, and a jewelry loupe == good for detecting part position
07:48 PM Wolf_: cool
07:48 PM malcom2073: I think it'll be a fun project.
07:48 PM Wolf_: only other hard thing is the tape feeders
07:49 PM malcom2073: I've got a good idea for a design for that
07:50 PM malcom2073: The feeders on the one at work suck, so I'll make them first, and try them out there heh
08:03 PM MacGalempsy: nice. then tell your boss you found a good deal on a replacement unit for $15k
08:04 PM malcom2073: Haha seriously
08:10 PM MacGalempsy: list it on ebay for $10k and see if someone buys it
08:20 PM MacGalempsy: what does the webcam part do?
08:20 PM MacGalempsy: scored a wireless router and a trackman marble+ for $1 each at this thriftshop today
08:21 PM malcom2073: Two cameras, one up-looking and one down
08:21 PM malcom2073: downlooking looks at the part in the tray/feed tape so it can pick it up straight, up-looking looks at the part after it's picked up to ensure it's aligned right
08:26 PM tjtr33: http://www.mogi.bme.hu/TAMOP/robot_applications/index.html general mechatronics linuxcnc pretty amazing integrations
08:30 PM tjtr33: thats dated 2014, theres some really great linuxcnc stuff we dont hear about!
08:33 PM CaptHindsight: hey tjtr33
08:33 PM MacGalempsy: cant loom atm. example?
08:35 PM tjtr33: CaptHindsight, how yooo doin?
08:36 PM CaptHindsight: tjtr33: crazy weather back here, 60's then snow then 60's again
08:36 PM tjtr33: 555, winters gone here, early morning low 70s, but low 90s by midday
08:37 PM CaptHindsight: I wouldn't mind that for a decade or two
08:38 PM tjtr33: playing with rcservos here, breaking the pot out, killing the internal loop, using with lcnc for playthings
08:38 PM tjtr33: trick is the adc part
08:39 PM tjtr33: tyrig kwallaces i2c analog stuff
08:39 PM tjtr33: trying
08:40 PM CaptHindsight: been working with AC servos and galvos
08:40 PM tjtr33: galvos, cool, doing laser shows you old hippie?
08:40 PM CaptHindsight: heh, melting stuff
08:40 PM tjtr33: ok dr no stuff
08:41 PM CaptHindsight: the new motion planner is nice for galvos
08:42 PM CaptHindsight: now it just needs to be faster
08:43 PM tjtr33: hmm, i got the new ja, but i dont have but a low speed stepper xyz here to try it out
08:43 PM CaptHindsight: pwm the lasers along with really consistent feed rates
08:43 PM tjtr33: / got the new ja // got _a_ new_er_ ja.. 8 i think //
08:45 PM CaptHindsight: tjtr33: did you ever look at that diy EDM book?
08:45 PM CaptHindsight: let me find the link
08:45 PM tjtr33: oh, i see, with laser, you have low mass, so you got quite high speed? do you follow the programmed path well ( is that what the new TP does for you ?)
08:45 PM CaptHindsight: at lower speeds yeah
08:45 PM tjtr33: ben flemings newer version with a 555 fet timer? read it
08:46 PM tjtr33: iirc the timing was not to my liking but i'm picky ( hell not even sure that was his name )
08:47 PM CaptHindsight: the galvos can move up to ~1k moves per second
08:48 PM CaptHindsight: yeah Ben Fleming
08:49 PM CaptHindsight: how well does his board work?
08:49 PM tjtr33: limited by what? the servo thread? its mass ( neglible ) pushing current into the coil ( 1k posn chgs sounds slow )
08:50 PM CaptHindsight: the motors and mirror mass
08:50 PM CaptHindsight: it's actually a few amps for 10mm mirrors
08:50 PM CaptHindsight: accuracy and repeatability are very tight
08:51 PM tjtr33: CaptHindsight, this pcb? http://www.modelenginenews.org/images/gp8/edmpcb.jpg
08:52 PM CaptHindsight: tjtr33: yeah, I guess you supply the coils and transformers
08:53 PM CaptHindsight: here it is http://www.homebuiltedmmachines.com/wp-content/uploads/2014/03/Pulse-PCB-final.jpg
08:53 PM CaptHindsight: http://www.homebuiltedmmachines.com/purchasing-books-and-starter-kits/
08:54 PM CaptHindsight: he has an RC board as well that looks like your pic
08:55 PM tjtr33: http://mix-engineering.com/2013/06/edm-machine-555-timer-again-fun-with-tuning/
08:56 PM CaptHindsight: does the board just generate pulses and not monitor what its doing to the metal?
08:56 PM tjtr33: the 2nd coming of his book, lemme look ( 1st, no real experience with it so all i say is just yakityak)
08:58 PM CaptHindsight: I haven't seen the schematics since they are only in the book
09:00 PM tjtr33: works this well :-) https://www.youtube.com/watch?v=r4F3SQW11gg
09:01 PM tjtr33: sounds good for diy, and i dont think that board is all there is to his plans
09:01 PM tjtr33: and i think his whole system will allow independant on & off and make sparks and control position and have trafos and ... well be an entire system
09:02 PM CaptHindsight: good for a broken tap remover
09:02 PM tjtr33: i dunno if it can be linuxcnc-ificated (tm )
09:03 PM tjtr33: no, good for lower receivers ( crap work as most guns look hand made inside )
09:04 PM tjtr33: hey did you or pete G take that edm generator? maybe i got one for you. i gotta clean house anyway
09:04 PM CaptHindsight: tjtr33: it's sitting 25ft from me
09:05 PM CaptHindsight: haven't had time to get it back together
09:06 PM tjtr33: 555 so use THAT its 300 amps , programmable on&off, its got a dang 5 axis Heidehain CNC
09:06 PM tjtr33: you can SMOKE with that! (rant off )
09:07 PM tjtr33: here you can see the difference that the jockey makes with a 'toy' control and generator https://www.youtube.com/watch?v=hhqdXU846xE
09:07 PM CaptHindsight: I was thinking about a lower cost hardware to make that actually works
09:08 PM tjtr33: his works, and enif user to says its been field tested
09:09 PM CaptHindsight: working on an air bearing lathe soon
09:10 PM CaptHindsight: with linear servos
09:10 PM tjtr33: oooh i remmeber one from canada, very nice ( sounds aerotech-y expensive)
09:11 PM tjtr33: this is a nice set of build photos for Bens pulse system http://mikroeng.blogspot.com.br/p/blog-page.html
09:11 PM CaptHindsight: you can spend quite a bit, especially from Aeotech
09:11 PM CaptHindsight: a bit too ghetto for me
09:12 PM tjtr33: yeah thats what ebay is for, want an A3000 aerotech ctl?
09:12 PM tjtr33: a3200
09:13 PM tjtr33: https://www.aerotech.com/product-catalog/motion-controller/a3200.aspx?p=/product-catalog/motion-controller.aspx
09:13 PM CaptHindsight: https://www.aerotech.com/product-catalog/motion-controller/a3200.aspx?p=/product-catalog/motion-controller.aspx
09:13 PM tjtr33: you supply all the proprietary add ons :-)
09:14 PM tjtr33: i think 20010 or so i showed one with EDM at TimTos Taiwan
09:15 PM tjtr33: email me, i gots to take care of the dogs
09:15 PM CaptHindsight: hasta banana
09:15 PM tjtr33: al's feet are sane
09:16 PM CaptHindsight: hehe
09:20 PM MacGalempsy: snow or 60 today?
09:21 PM CaptHindsight: MacGalempsy: started out 60 dropping like a rock now, snow by early am
09:21 PM CaptHindsight: and then back to 60 by Friday
09:21 PM Tom_L: gonna get colder ehh?
09:21 PM MacGalempsy: good thing for northern girls, huh?
09:22 PM Tom_L: 58F currently
09:22 PM CaptHindsight: the past few weeks have been roller coasters
09:22 PM Tom_L: for sure
09:23 PM CaptHindsight: Tom_L: has it been that extreme out there by you?
09:23 PM CaptHindsight: thunderstorm right now
09:24 PM Tom_L: yeah
09:24 PM Tom_L: was nice today
09:24 PM Tom_L: but who knows what tomorrow will be
09:24 PM CaptHindsight: MacGalempsy: did you see my comment about keeping the laser out of the heated build chamber
09:25 PM CaptHindsight: shoot the laser through a window at the build platform
09:26 PM MacGalempsy: yep. was sketching up a metal bellows cover to try and deflect some heat
09:26 PM CaptHindsight: for example with a CO2 http://www.laserresearch.net/shopping/shopdisplayproducts.asp?id=278
09:26 PM MacGalempsy: there is this aerospace fabric that would probably be good insulation
09:27 PM CaptHindsight: so only 0.25% power loss through the window
09:27 PM Tom_L: just stepped outside and the wind is out of the North now. i bet the temp will start dropping like a rock
09:27 PM MacGalempsy: cool. ZnSe sounds exotic
09:28 PM CaptHindsight: for 10.6um wavelength
09:29 PM CaptHindsight: fused silica is cheaper and works in the 700nm range you were looking at
09:29 PM CaptHindsight: you just need to find a matching anti-reflective coating for your wavelength
09:30 PM MacGalempsy: guess when theres a chance to get the general design together, maybe o can get you to take a gander at it.
09:30 PM MacGalempsy: o=i
09:31 PM Tom_L: anybody know what level 1-9 in the bios fan setting means for target fan speed?
09:31 PM Tom_L: the cpu one gives a temp range
09:32 PM CaptHindsight: I'd test it to be sure. BIOSes are often broken
09:33 PM Tom_L: it's a fanless setup anyway
09:33 PM Tom_L: just trying to get the chassis fan slowed down a bit
09:33 PM MacGalempsy: no description in the manual?
09:35 PM CaptHindsight: https://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=3983 AR coating reflectance curves
09:37 PM MacGalempsy: this is what i have in mind
09:37 PM MacGalempsy: well one that is ttl
09:37 PM MacGalempsy: http://m.ebay.com/itm/1600mW-450nm-Laser-Head-Engraving-Module-Diode-Wood-Marking-For-CNC-Engraver-/232241917657?nav=SEARCH
09:38 PM CaptHindsight: blue laser
09:38 PM MacGalempsy: nah. ir.
09:39 PM MacGalempsy: that is the general shape
09:39 PM CaptHindsight: you can use standard camera optics for 455nm
09:40 PM CaptHindsight: https://www.youtube.com/watch?v=WONvkU1-cGs 445nm casio laser array
09:41 PM CaptHindsight: https://www.youtube.com/watch?v=ryLEMobdicw
09:42 PM CaptHindsight: https://www.youtube.com/watch?v=gF4HG6v29UY Casio Laser projector burns some stuff
09:45 PM CaptHindsight: http://www.ebay.com/itm/Adjusted-808nm-2400mw-2-4w-12V-IR-Infrared-Laser-Dot-Diode-Module-w-TTL-Driver-/132032129614
09:49 PM MacGalempsy: sweet laser array
09:49 PM MacGalempsy: do you think that ttl unit would need an additional focusing lense since the output is rectangular?
09:50 PM CaptHindsight: MacGalempsy: are you going to mount the laser on a gantry and move the laser?
09:51 PM MacGalempsy: yes. thats the idea
09:52 PM CaptHindsight: if you want a smaller spot size then you'll need an expander and a focusing lens
09:53 PM MacGalempsy: convexed and concaved?
09:57 PM CaptHindsight: http://www.winlens.de/fileadmin/user_upload/Dateien/Technical_papers/Optolines_bmx_englisch.pdf
09:57 PM CaptHindsight: http://assets.newport.com/webdocuments-en/images/how_to_build_a_beam_expander_5.pdf
09:58 PM CaptHindsight: http://www.ebay.com/itm/Linos-Laser-Beam-Expander-Magnification-2-8X-Wavelengths-630nm-830nm-/172549578487 $99
10:00 PM CaptHindsight: bbl
10:17 PM Connor1 is now known as Connor
10:17 PM CaptHindsight: MacGalempsy: https://imagebin.ca/v/3E1KSBWOwDeE to get a smaller spot you'll need an beam expander and mount the mirrors and focus lens on the XY positioners
10:19 PM CaptHindsight: this way the laser stays out of the oven
10:19 PM insomnia is now known as BipolarBear
10:19 PM MacGalempsy: that seems ti be the key.
10:19 PM CaptHindsight: then the next challenge is getting an XY stage that will survive in an oven
10:20 PM MacGalempsy: heh. this project will take a while
10:21 PM CaptHindsight: with a galvo you don't have that problem
10:21 PM MacGalempsy: galvo?
10:21 PM CaptHindsight: since the galvo sits outside of the oven
10:21 PM CaptHindsight: for beam steering
10:21 PM CaptHindsight: like a laser show
10:22 PM MacGalempsy: i was thinking the laser x/y would be above the oven
10:22 PM MacGalempsy: with steel bellows covers backed w aerospace insulation
10:23 PM MacGalempsy: attempting a cool chamber
10:24 PM CaptHindsight: https://www.youtube.com/watch?v=Rs1UL_ngtTw with the laser shooting through a window vs the stage out in the open like this video
10:24 PM CaptHindsight: ^^ uses a galvo
10:26 PM MacGalempsy: wow. thats neat and fast
10:26 PM CaptHindsight: with your approach the lasers lens will be exposed to the oven
10:27 PM CaptHindsight: so you'd need to cool that somehow or use a window
10:27 PM MacGalempsy: i like the window idea.
10:27 PM MacGalempsy: that seems to seal up the hole left by the covers
10:27 PM CaptHindsight: your laser would have to be in a capsule
10:28 PM CaptHindsight: cooled via an umbilical cord
10:28 PM MacGalempsy: you think a water cooler on that aluminum housing would be sufficient?
10:29 PM MacGalempsy: the galvo seemed so much faster than an xy stage
10:29 PM CaptHindsight: with enough contact area and high enough water volume
10:29 PM CaptHindsight: yes, it's much faster
10:30 PM MacGalempsy: that is more appealing
10:30 PM CaptHindsight: less range of travel though
10:30 PM MacGalempsy: i am imagining the build plate being 200mm sq
10:31 PM CaptHindsight: http://www.ebay.com/itm/Domino-Laser-Head-Scan-Module-WF-S300-S-Series-Plus-/311615194734
10:32 PM CaptHindsight: ^^ laser tube, galvo and lens
10:33 PM MacGalempsy: cool. will need to start reading up
10:33 PM CaptHindsight: bbl , have to make a part I broke a tap in :(
10:55 PM MacGalempsy: the mirrors are light enough that it would seem rc car servos would work