#linuxcnc Logs

Mar 01 2017

#linuxcnc Calendar

12:04 AM BipolarBear is now known as ApocalypseCow
02:24 AM Deejay: moin
05:01 AM XXCoder: boo
05:02 AM malcom2073: Yep
05:04 AM XXCoder: t
05:04 AM XXCoder: hh
05:04 AM XXCoder: heh
05:04 AM XXCoder: whats up
05:05 AM malcom2073: Not much, about to go to work
05:06 AM XXCoder: lol and I just got here from work
05:25 AM jthornton: morning
05:25 AM XXCoder: yo
05:30 AM Tom_L: 38°
05:30 AM Tom_L: not as chilly as i expected
05:31 AM jthornton: we had some pretty good rain about 3am
05:31 AM jthornton: I hope my grass seed is still stuck to the hillside
05:31 AM jthornton: 61F here
05:31 AM XXCoder: one seed? better be huge seed heh'
05:32 AM Tom_L: http://www.intellicast.com/Local/WxMap.aspx
05:32 AM Tom_L: clear from you to the w coast
05:32 AM Tom_L: give it a min. it'll change
05:33 AM jthornton: https://www.youtube.com/watch?v=Y4TVK_OniJ4
05:34 AM XXCoder: damn I want osscoiscope
05:34 AM Tom_L: that's part of lcnc
05:34 AM XXCoder: huh
05:35 AM Tom_L: so now you have one
05:35 AM XXCoder: how do it connect and check electric current and such?
05:35 AM jthornton: https://www.youtube.com/watch?v=TdvcHJeDoEI
05:36 AM Tom_L: maybe my board will come today and i can finish this pc build
05:36 AM jthornton: what are you building it for?
05:36 AM Tom_L: dos
05:37 AM jthornton: 6.2?
05:37 AM Tom_L: yup
05:37 AM XXCoder: is hardware sim also part of linuxcnc?
05:37 AM jthornton: yea
05:38 AM Tom_L: i figure it's easier than rewriting the app in windows
05:38 AM Tom_L: the p100 is starting to give me grief
05:39 AM jthornton: what app is that?
05:39 AM Tom_L: business clients etc
05:39 AM Tom_L: payroll, mailing etc
05:39 AM jthornton: a database?
05:39 AM Tom_L: yes
05:39 AM sync_: can't you just run it in a dosbox?
05:40 AM Tom_L: probablyh
05:40 AM Tom_L: i need 2 legacy printer ports
05:40 AM Tom_L: you can't simulate that
05:41 AM jthornton: different than a parallel port?
05:41 AM Tom_L: same
05:41 AM Tom_L: pci remaps them way up high
05:41 AM sync_: there are dosboxens with lpt support
05:41 AM Tom_L: someone already tried to get me to use vm box
05:43 AM Tom_L: i was looking for the easiest fix and had most of the hardware
05:56 AM MacGalempsy: a bunch of crazy geology tonight!
05:57 AM MacGalempsy: and we managed to get thru 4 bouts of event 2, team fighting championship
07:24 AM JesusAlos1 is now known as JesusAlos
09:03 AM miss0r: I just had the best meatball in my life today :) I was out fixing the controller in an industrial oven making leverpostej(I guess liver paté ?). The owner, in a pretty sticky situation, said to me after I fixed the issue, that I could choose anything I wanted to eat in there. (HUGE industrial butchers shop). He laughed his ass off when I just asked for one of thoes meatballs that have been cooking next to me for
09:03 AM miss0r: the last hour, since they smelled very good :).. I think he was under the impression that I would ask for half-a-cow or something. But damn. that was a good meatball
09:06 AM OSR_Dragon: nice
10:45 AM gregcnc: more fidget toys https://www.kickstarter.com/projects/1303595549/moondrop-fidget-desk-toy-displaying-gravity-on-the
11:52 AM archivist: er wot "precision up to 0.001 mm" but down to a mile
11:56 AM JT-Shop: go to use a 11/32 collet I guess for the first time and the thread is damagedd
01:11 PM Tom_L: JT-Shop, got a thread file?
01:12 PM gregcnc: I just touch them up with a triangle file
01:13 PM Tom_L: probably wrong angle and not fine enough
01:16 PM archivist: just need to get high spots off leave the other 99 % of the thread
01:16 PM gregcnc: last time I check triangles had 60° corners, and these are the small needle type
01:16 PM JT-Shop: used a needle file
01:18 PM archivist: there are other file angles for those that want to pay :)
01:18 PM Tom_L: triangle file could also be 30 60 90
01:18 PM Tom_L: i've seen some
01:19 PM gregcnc: but most are 60,60,60
01:19 PM Tom_L: agreed
01:19 PM FinboySlick: I just have to share: https://www.youtube.com/watch?v=NUC2EQvdzmY Very explicit lyrics warning though.
01:19 PM gregcnc: and other that those bastard witworth suitable
01:20 PM archivist: Whit is luverly
01:21 PM JT-Shop: only one I had with a fine edge
01:22 PM archivist: the real barsteward thread angle is on BA and Thury threads, 47.5
01:57 PM andypugh: panzegewinde: 90 degree thread.
01:58 PM andypugh: Sorry, mis-remembered. 80 degree thread angle
01:59 PM andypugh: It doesn’t look as odd as you might expect. https://de.wikipedia.org/wiki/Stahlpanzerrohrgewinde
02:08 PM gregcnc: i've only seen PG when looking at cable gland, thankfully metric threaded are also common
02:18 PM robertj: hey all, i'd like a reeeeeeely tiny cnc mill
02:21 PM _methods: hah i never knew that cable gland pg naming convention was because of the threads
02:22 PM _methods: had no idea they had some crazy german tank name threads either
02:22 PM _methods: learn something new in here everyday
02:27 PM Tom_L: i'd stop coming back if i didn't
02:27 PM _methods: i just thought the pg stood for plastic gland or something
02:27 PM Tom_L: well maybe... a few good ppl in here worth chatting with
03:02 PM robertj: sooo many diy builds to look through
03:14 PM CaptHindsight: robertj: I can make you one thats so small you can't see it with the naked eye
03:17 PM andypugh: robertj: Have you seen: http://www.pocketnc.com/pocketnc/
03:17 PM robertj: andypugh, yeah - seems kinda light weight though
03:18 PM andypugh: There is not much point being sturdy enough to snap a 1/2” bit if the machine is limited to 1/8” bits.
03:20 PM _methods: robertj> hey all, i'd like a reeeeeeely tiny cnc mill
03:20 PM _methods: wouldn't light weight be a symptom of realllllllly tiny
03:22 PM robertj: plus they havee a3 week lead time
03:22 PM robertj: something's up with that if you have one signature device and it's only $5k
03:22 PM robertj: OTOH claimed resolution is really really good
03:24 PM andypugh: Pocket-NC was a kickstarter project, I think.
03:24 PM robertj: Yeah it was
03:25 PM robertj: also i'd want to cut stuff harder than aluminum for that kind of cash
03:27 PM andypugh: So, start by making a set of wood patterns to send to the iron foundry.
03:28 PM andypugh: You probably need to use linear rails if you don’t have a mill already.
03:28 PM robertj: I looked at a few such kits yesterday
03:28 PM andypugh: (Heads off to the workshop)
03:29 PM * robertj goes digging to find that tab
03:29 PM robertj: http://www.cncrouterparts.com/pro4824-4-x-2-cnc-router-kit-p-250.html
03:33 PM robertj: however you will note, it is not tiny
04:37 PM Deejay: gn8
04:43 PM JT-Shop: I need some way to hold a part that is 0.093 thick when done milling
04:44 PM Tom_L: double back tape
04:44 PM Tom_L: or superglue
04:44 PM Tom_L: or such
04:44 PM Tom_L: tape and side clamp if possible or dowel pin the edge
04:45 PM Tom_L: as a backup from moving
04:46 PM Tom_L: paint store or hardware store should have the tape
04:47 PM Tom_L: of course it depends how big the part is too
04:48 PM Tom_L: pic is worth 1k words
04:53 PM JT-Shop: damn it SW drawings are hosed up
04:55 PM yasnak: JT
04:55 PM yasnak: Miteebite
04:55 PM yasnak: Has some wax that you heat up
04:55 PM yasnak: Used it on some 0.05" places with tons of drilling/milling. Worked perfect. Held 0.001" locationally. Only issue was if the material was a bit warped...
04:56 PM yasnak: https://www.miteebite.com/products/mitee-grip/ Email their sales, they will send you out a sample if you have just a few jobs to run. :)
05:00 PM JT-Shop: I just have one part to do
05:01 PM JT-Shop: interesting stuff
05:01 PM yasnak: worked great for me...
05:02 PM yasnak: only issue is if you have some tight tolerances you need to hold in height. it tends to float a few thou. not much...0.0025" maybe
05:10 PM Tom_L: yeah that looks like good stuff
05:10 PM Tom_L: how much flat surface do you have?
05:11 PM pfred1: Good Stuff™
05:13 PM Tom_L: i wonder if the melting temp would affect any metal parts for warpage
05:14 PM pfred1: my last homemade HDPE project warped on me
05:14 PM pfred1: it seriously pissed me off
05:20 PM JT-Shop: where the heck is C:ProgramData in winblows
05:22 PM yasnak: flat...not flat actually help
05:22 PM yasnak: mine were flat 4x8" 0.05" sheets
05:23 PM yasnak: making some actuators for medical devices. just ended up milling a profile into some aluminum and melting the wax into that...held down perfectly
05:23 PM yasnak: just don't get it too hot, coolant is fine too.
05:27 PM Tom_L: JT-Shop, right by programfiles
05:27 PM Tom_L: in the C directory
05:28 PM Tom_L: you may have to show system files i don't remember ( i show them by default anyway )
05:29 PM Tom_L: JT-Shop, yeah it appears to be a hidden directory normally
05:29 PM JT-Shop: that's what I thought
05:30 PM Tom_L: Tools -> folder options -> view
05:31 PM Tom_L: i uncheck just about everything they like to hide
05:34 PM * Tom_L waits impatiently for FedEx
05:35 PM JT-Shop: thanks, been so long since I had a fresh winblows I forget
05:35 PM Tom_L: i do that as part of the install so i forget what gets hidden
05:37 PM Tom_L: i did one for someone recently where i hid a couple compilers from them so in case i need to do an update i can compile it on the spot
06:03 PM Frank_6: guys i've been designing a sturdy steel table for general work on cad, i've already bought and cut the steel but cant figure out if i should bolt it together (already have bolts) or weld it together, my main concern for bolts is that if i hammer up the top plate, the joints would slowly start to move, out of position. i know how to weld but my concern with welding is that its hard to do it square
06:03 PM Frank_6: heres the pic http://imgur.com/a/MPEJY
06:03 PM Frank_6: its 3*3'' steel angle 3/8'' thick
06:04 PM jdh: weld
06:04 PM jdh: but, why do you need a sturdy steel desk for sitting at a computer
06:05 PM Tom_L: must be a monster pc
06:06 PM Frank_6: lol, it must be that english its not my first language, but i meant that i've designed the table on cad, not for doing cad over it
06:07 PM Frank_6: and it would be almost 200kg WITHOUT steel plate top, so, not that easy to move if welded
06:09 PM SpeedEvil: Do you mean countersunk bolts of some sort.
06:09 PM SpeedEvil: Or drill and tap the plate and secure from the bottom
06:10 PM JT-Shop: I would weld the table support and bolt the table on if you need to move it
06:11 PM JT-Shop: Frank_6: try imagebin.ca no porn ads
06:11 PM SpeedEvil: Simply bolting everything together is also reasonable.
06:11 PM Frank_6: really? didnt knew, sry im using adblock
06:11 PM SpeedEvil: Welding will be no more rigid.
06:11 PM pfred1: welding is the lazy way
06:11 PM SpeedEvil: Plus obviously easier to transport
06:12 PM pfred1: hot snot it
06:12 PM Frank_6: jt, what would be the table support? the thingy in the pic?
06:12 PM SpeedEvil: Hammering on the top won't move properly torqued bolts.
06:13 PM Frank_6: downside with bolting is that there are like 80 1/2 inch holes
06:13 PM SpeedEvil: Frank_6: how thick is the top
06:13 PM pfred1: the upside to bolting is it is asjustable and does not warp
06:13 PM Frank_6: i havent bought the top yet but im planning 3/4 inch
06:13 PM Frank_6: steel
06:13 PM Frank_6: pfred1 thats why i like it
06:14 PM SpeedEvil: What do you plan on doing to this table.
06:14 PM Frank_6: +loctite
06:14 PM SpeedEvil: At 3/4", you could damn near just lay it on top.
06:14 PM Frank_6: weld, hammer, read(?), stand on it so i feel taller
06:14 PM JT-Shop: Frank_6: yea
06:15 PM Frank_6: yep im not converned wether to bolt or weld the top, but the main frame
06:15 PM pfred1: Frank_6 I selded up a little box once I had it like a thousandth of an inch square before I welded it after it cooled it was within 5 thousandths and I had clamps all over it
06:15 PM Frank_6: the 3*3'' angle steel
06:15 PM pfred1: I mean more weight in clamps than the piece itself
06:15 PM Frank_6: selded?
06:15 PM pfred1: anything welded moves
06:15 PM * JT-Shop has boxes of clamps
06:15 PM pfred1: welded it is a typo
06:15 PM Frank_6: i have 4 clamps T_T
06:16 PM Frank_6: besides this is 1*2meters
06:16 PM Frank_6: or almost 4*8
06:16 PM Frank_6: feet
06:16 PM pfred1: the only way something can be welded square is if it is clamped up out of square
06:16 PM SpeedEvil: pfred1: Not the only way. There is blind luck too.
06:16 PM Frank_6: and with an army of clamps
06:16 PM JT-Shop: not if you normalize it
06:16 PM pfred1: SpeedEvil that blind luck will add up to having clamped the work out of square
06:17 PM Frank_6: i dont think normalize it brings it back to place
06:17 PM pfred1: metal expands when heated
06:17 PM SpeedEvil: yeah. Weld the table together, including the top, normalise, and then take a skim off the top to make it flat.
06:17 PM Frank_6: i've normalized my cnc steel (200kg) frame and it stayed pretty much the same, thou i havent measured it quite preciselly
06:17 PM pfred1: sure you can machine stuff flat again
06:17 PM SpeedEvil: Do you have a 1*2*1m kiln, and eighteen strong men to move the table in and out?
06:17 PM Frank_6: give me da money
06:18 PM Frank_6: and the time
06:18 PM Frank_6: lol
06:18 PM Frank_6: i have a decision complex
06:18 PM SpeedEvil: In principle, the top could be secured on with blind holes, tapped.
06:19 PM Frank_6: if i can manage to get the *heavy* top plate on top of the frame then ill call that a win
06:19 PM SpeedEvil: First make a crane.
06:20 PM Frank_6: i was thinking of welding the side frames (3x3 feet aprox) and bolt the long parts
06:20 PM Frank_6: thus welding only on 2d
06:21 PM * JT-Shop built a gantry http://gnipsel.com/shop/gantry/gantry.xhtml
06:21 PM Frank_6: oh come on you just were showing off that nice white table you have there
06:22 PM SpeedEvil: JT-Shop: To the tune of 'Does your mill swing low'
06:22 PM JT-Shop: lol
06:23 PM SpeedEvil: Is that ridiculous overkill, or might you actually need it?
06:23 PM Frank_6: jt, is that a design of yours, or you based it on web plans
06:23 PM SpeedEvil: And is the gantry purely bolted?
06:23 PM JT-Shop: so I can work on my hoe and crawler
06:23 PM SpeedEvil: on the top
06:23 PM JT-Shop: yea
06:23 PM SpeedEvil: That's a big hoe.
06:24 PM JT-Shop: normal size hoe 12,000lbs or so
06:25 PM yasnak: lol
06:30 PM JT-Shop: crap I touched off wrong and sent my extra long mill rapid through the part... neither one survived
06:30 PM JT-Shop: I quit for the day
06:32 PM JT-Shop: oh well I guess that was just a practice part for the real one... wonder if I have another extra long 1/4" end mill
06:32 PM SpeedEvil: https://www.iter.org/newsline/-/2642 - their shop crane is bigger
06:32 PM Frank_6: S#!t happens
06:33 PM JT-Shop: everyone's shop crane is bigger than mine
06:33 PM JT-Shop: yea, time to chill now
06:33 PM Frank_6: good excuse for a beer
06:34 PM Frank_6: your unconscious self did it on porpouse
06:34 PM JT-Shop: past that lol
06:35 PM JT-Shop: I drink one beer a day at 5 today I waited till it was 5 at my sisters house in Georgea
06:35 PM JT-Shop: or Georgia even
06:36 PM Frank_6: hehe
06:36 PM JT-Shop: anyway time to go inside and be with the wife for a while
06:37 PM JT-Shop: goodnight
06:38 PM Frank_6: goodnight sir
07:21 PM R2E4_bevins: xhc-hb04 stuff is convoluted....
08:53 PM MacGalempsy: good evening folks
08:55 PM BeachBumPete: evening mac
08:57 PM malcom2073: Evening
08:57 PM ApocalypseCow is now known as kuntwon1
09:04 PM MacGalempsy: all pick and placed out yet?
09:05 PM MacGalempsy: getting caught up in The 100.
09:07 PM malcom2073: Yep, that machineis a mess, but I've got it woring
09:07 PM MacGalempsy: sounds like organized chaos
09:10 PM kuntwon1 is now known as DieFledermaus
10:05 PM MacGalempsy: CaptHindsight: any special math to run the galvo with linuxcnc?
10:21 PM CaptHindsight: the galvo driver and F-theta lens should take care of the linearity
10:23 PM CaptHindsight: http://specialoptics.com/download/10/
10:24 PM Wolfmetalfab is now known as Wolf_
10:25 PM CaptHindsight: http://oisc.net/ZemaxFiles/Class%2013/F-Theta.pdf
10:39 PM MacGalempsy: thanks capt
11:40 PM MacGalempsy: tripping pipe...so boring