#linuxcnc Logs

Feb 24 2017

#linuxcnc Calendar

12:29 AM SpeedEvil: There is so much awesome stuff on youtube.
12:31 AM SpeedEvil: Was just watching something on the deviations from the black body of the cosmic microwave background, and what it might tell us about ways it doesn't match current theory
02:33 AM Deejay: moin
04:47 AM XXCoder: SpeedEvil: lol nice
04:49 AM XXCoder: 5v didnt arrive today. aw!
04:53 AM jthornton: morning
04:53 AM XXCoder: hey jthornton
05:01 AM jthornton: I think your 5v is stuck in the same place as my bubble wrap
05:01 AM XXCoder: hopefully not same place as my 800 mb hard drive heh
05:10 AM XXCoder: https://www.youtube.com/watch?v=a9oulSjWRgg
05:57 AM XXCoder: hmm
05:57 AM XXCoder: I wonder
05:58 AM XXCoder: how much lumens do average car headlight have?
06:00 AM sync_: h1 1550, h3 1450, h4 1000, h7 1500, h9 2100
06:01 AM XXCoder: cool
06:02 AM XXCoder: mine is H11 apparently
06:02 AM XXCoder: first year for that
06:02 AM XXCoder: 1,350 apparently
06:02 AM XXCoder: thanks
06:02 AM archivist: and there are differing patterns
06:03 AM XXCoder: https://www.cyclopsadventuresports.com/4000-Lumen-H8-H9-and-H11-LED-Headlight-Bulb_p_94.html
06:03 AM XXCoder: crazy
06:03 AM XXCoder: why isnt there 2,000 lumen ones
06:03 AM archivist: actually too bright blinds the oncoming driver
06:04 AM XXCoder: indeed, I hate those, thats why I asked for lumen
06:04 AM sync_: because the light output is governed by legislation
06:04 AM XXCoder: if i decide to get led ones, I want approx same lumens. 1500 is fine, 2000 ehh
06:04 AM sync_: you can get 3000 lumen if you have hid lamps
06:04 AM sync_: led does not give you any benefit
06:05 AM sync_: as the spot is less controlled in the bulb
06:05 AM sync_: so the optics don't work
06:05 AM XXCoder: oh just less power used, which translates to little more mpg
06:05 AM XXCoder: and more or less long life
06:05 AM * XXCoder groans
06:06 AM XXCoder: theres 8k lumen ones apparently
06:06 AM archivist: cannot get optics like this with led http://www.collection.archivist.info/showresult.php?prog=1&srcprog=searchv13.php&srcdata=title&Type=PS&Accn_no=1529&subject=6723
06:07 AM XXCoder: actually some leds are designed to worjk with mirrors
06:07 AM sync_: the power consumption of you headlights is marginal compared to most other accessories
06:08 AM XXCoder: sync_: oh I know, wanted more for long life than power usage
06:08 AM sync_: yes, but your headlight is not designed to work with a led
06:08 AM sync_: if they were, they would come with a led bulb
06:09 AM XXCoder: https://www.aliexpress.com/item/Super-Bright-Car-Headlights-H7-LED-H8-H11-HB3-9005-HB4-9006-70W-7000lm-Auto-Front/32684222030.html
06:09 AM XXCoder: see how its designed
06:09 AM XXCoder: way too bright tho heh
06:10 AM XXCoder: and theres 800lm ones too lol
06:10 AM sync_: yes, that is not gonna work with your headlight as designed
06:10 AM sync_: as the spot is larger
06:11 AM sync_: the position of the tungsten is controlled to 1/100mm for this reason
06:11 AM XXCoder: yeah dont think will go for leds at this time
06:12 AM XXCoder: theres invention that makes plastic glow, it would be way better for visiability (opposited to making other things visiable) utility
06:12 AM XXCoder: but silent on that news, I guess it failed to market.
06:12 AM sync_: if you want more light get factory hids with the proper attitude sensors
06:12 AM XXCoder: more light no thanks
06:15 AM XXCoder: cant finbd it anywhere I guess its gonbe
06:15 AM XXCoder: its plastic that glows with electricity
06:15 AM XXCoder: and as unbreakable as any plastic
06:17 AM malcom2073: XXCoder: Electroluminescent plastic?
06:17 AM malcom2073: It's still a thing: https://www.adafruit.com/category/50
06:18 AM XXCoder: no
07:11 AM XXCoder: so many clamps. https://www.youtube.com/watch?v=aiDJp6utmUM
07:13 AM malcom2073: woodworkers love their clamps
07:13 AM XXCoder: apparently
09:08 AM * JT-Shop forgets the general rule of thumb for reamer speed and feed...
09:08 AM JT-Shop: is 1/2 speed and 2x feed?
10:54 AM os1r1s: I'm trying to figure out the bbest way to wire my e-stop. Do you think cutting 12V power to the 7i76 board is sufficient since that disables all motors?
10:58 AM archivist: do you want controlled stop or a fsck up
10:59 AM os1r1s: archivist I want it to hit it if there are any issues and shut it all down
11:00 AM archivist: you can leave things flying if not stopped/decelerated
11:02 AM pcw_home: For larger machines, Estop should remove main servo and spindle power
11:02 AM os1r1s: archivist What's the best practice?
11:02 AM os1r1s: pcw_home This is a pm25mv (g0704 size machine)
11:03 AM sync_: you can use a safety plc to do a controlled stop
11:03 AM sync_: softestop to linuxcnc and then kill the dc link say .2s later
11:03 AM sync_: or whatever your max decel time is
01:56 PM MrSunshine: heh cool, got an emco 5 compact without the steppers and so for free of a friend =)
02:02 PM os1r1s: MrSunshine Awesome score
02:02 PM os1r1s: MrSunshine I like that machine
02:03 PM MrSunshine: yeah =) just need to fix her up with some motors and stuff but ill get to it =)
02:04 PM sync_: it is the machine that introduced the huge rigidity flaw to a lot of chinese machines
02:04 PM MrSunshine: ok ? =)
02:05 PM sync_: the way the topslide is mounted is iffy
03:13 PM jesseg: For performance over cost, is this probably a good choice, or would I be better off buying cheep from China? https://www.mscdirect.com/product/details/03578242?fromRR=Y
03:13 PM sync_: just get a chinese one
03:13 PM sync_: or a ukranian one
03:13 PM jesseg: I hate to spend that much on grinding wheel, but if a Chinese cheap one lasts one tenth the use then I didn't save any
03:13 PM jesseg: really?
03:14 PM sync_: yes
03:14 PM jesseg: they hold up OK?
03:14 PM sync_: yes
03:14 PM jesseg: excellent!
03:37 PM XXCoder: good way too early morning to you guys
03:39 PM JT-Shop: lol
03:40 PM JT-Shop: almost beer thirty here
03:41 PM XXCoder: 1 pm is my normal waking time, but I woke up 9:30 am today ugh
03:50 PM JT-Shop: yuck
03:53 PM XXCoder: yeah
03:54 PM XXCoder: its a must have to
03:54 PM XXCoder: but theres glimmer of good news
03:54 PM XXCoder: I got 5v
03:54 PM JT-Shop: yea make some chips
03:54 PM XXCoder: not for while yet
03:55 PM XXCoder: but definely can test pretty soon
03:55 PM JT-Shop: my new transmitter came in
03:55 PM XXCoder: I think I want to grind flat spots on my steppers
03:55 PM XXCoder: it keeps slipping
03:56 PM andypugh: Grub screws are a terrible way to connect to a shaft
03:56 PM XXCoder: yeah
03:57 PM XXCoder: better way I think is 2 bolts on sides to tighten coupler
03:57 PM XXCoder: better hold overall
03:57 PM JT-Shop: at the best is two 90 degrees apart the worst is 2 opposite each other
03:57 PM andypugh: I like various types of taperlock.
03:58 PM andypugh: 8th picture down, as a home-made example
03:58 PM andypugh: http://bodgesoc.blogspot.co.uk/search/label/Holbrook05%20The%20Z-axis%20Drive
04:04 PM sync_: I like loctite 648
04:05 PM XXCoder: cool
04:05 PM XXCoder: andy still fixing that lathe?
04:05 PM XXCoder: or not yours?
04:06 PM andypugh: The lathe has been working for quite a while now.
04:06 PM XXCoder: nice
04:09 PM andypugh: If I can summon up the enthusiasm this weekend I do need to pul it away from the wall to add an extra power feed for the 8i20 cards.
04:09 PM XXCoder: I need some of that in order to get off my ass and complete wiring/
04:09 PM andypugh: But that’s a job that involves assembling the jacking frame and castors round it.
04:11 PM XXCoder: yay, russia! http://talkingpointsmemo.com/dc/cpac-russia-prank lol
04:11 PM XXCoder: either side, you got to admit that was funny.
04:13 PM XXCoder: anyway
04:13 PM XXCoder: I hope BOB pins is well documented lol
04:13 PM Deejay: gn8
04:13 PM XXCoder: I think I'll have a nap before I play with electrics.
04:14 PM XXCoder: laters
04:49 PM Frank_6: hi everyone long time since i've been around
04:55 PM andypugh: Me too
05:10 PM MacGalempsy: afternoon folks
05:16 PM JT-Shop: my new transmitter uses open source TX software
05:18 PM MacGalempsy: what it it for?
05:18 PM JT-Shop: my RC planes
05:18 PM gregcnc: DO IT WORK?
05:19 PM JT-Shop: yea
05:19 PM MacGalempsy: cool. did you cnc the frames?
05:19 PM JT-Shop: frames?
05:19 PM MacGalempsy: the fusalages
05:19 PM gregcnc: I still have my ancient 72MHz gear
05:20 PM JT-Shop: no, the one I have now is a foamy, I'm building a balsa Trike-It
05:21 PM gregcnc: seems fragile
05:22 PM gregcnc: i may have the wrong airframe in mind
05:23 PM JT-Shop: https://twistedhobbys.com/th-32-epp-edge-540-gh-w-hd-landing-gear/
05:23 PM JT-Shop: that's the one I have now
05:24 PM gregcnc: what's a Trike-It?
05:25 PM JT-Shop: it's a plane me and a buddy designed years ago he just finished his electric version
05:26 PM gregcnc: may be why I've never heard of it
05:26 PM JT-Shop: http://gnipsel.com/images/rc-planes/Trike-It-e01.jpg
05:29 PM MacGalempsy: tgif. you guys got any weekend plans?
05:29 PM gregcnc: if there was a hots 3d
05:31 PM FloppyDisk525: what TX has the open source software - sounds cool.
05:33 PM JT-Shop: Taranis
05:33 PM Wolf_: frsky taranis
05:34 PM Wolf_: you can also reflash some hobbyking txs
05:37 PM FloppyDisk525: cool - thanks.
05:37 PM JT-Shop: I got the X9D with a travel case for $205 from aloft hobbies
05:48 PM JT-Shop: I wanted to make a tail dragger but my buddy twisted my arm to make a trike so I said Trike-It and it stuck
05:49 PM malcom2073: Wolf_: https://sites.google.com/site/technoswapfest2/
06:05 PM andypugh: I don’t think I could _afford_ to teansport all my abandoned projects to MD.
06:05 PM andypugh: (And I still delude myself that I will get back to them)
06:08 PM JT-Shop: I can't understand how some people are deathly afraid to post on the forum
06:09 PM Tom_itx: irc is quicker
06:10 PM malcom2073: People get burned on forums all the time
06:10 PM JT-Shop: personal emails are slower
06:10 PM malcom2073: Too many times when posting they get yelled at to "search!" or "That's a dumb question" Not neccesarily on lcnc forums, but on forums on the internet in general.
06:11 PM andypugh: I don’t think we ever do that. And if they would just read the forums they would realise that. Oh, wait....
06:11 PM JT-Shop: I can understand that but we are a bit different
06:11 PM malcom2073: andypugh: Then you are unique
06:11 PM JT-Shop: exactly
06:12 PM malcom2073: People are slow to believe that someone is different than anyone else :-P
06:15 PM JT-Shop: the biggest reason I don't do personal support is only one person gets a benefit from that
06:24 PM malcom2073: +1. I'll do public support for a lot of things for free. Personal support needs paid
06:31 PM XXCoder: ugh woke up like zombie
06:41 PM * SpeedEvil passes XXCoder some brains.
06:41 PM XXCoder: I said LIKE a zombie, not as zombie. ;)
06:41 PM * XXCoder wonders where speed sourced brains that fast
06:43 PM JT-Shop: attack of the killer zombies!
06:48 PM XXCoder: wtach out, fast kid zombies!
06:50 PM MacGalempsy: the only two things ive noticed in the lcnc forums is 1)dumb questions get ignored and 2)hijacked threads get politely asked to start a new thread. people are quite nice actually
06:52 PM JT-Shop: often I'll just start a new thread with a hijacker :)
06:58 PM MacGalempsy: fortunately we arent so savagr as reddit
07:00 PM jym: Yes YOU are!
07:00 PM jym: more so than 4chan even
07:01 PM MacGalempsy: lol. light ribbing amongst buds :l
07:01 PM XXCoder: depends on what channel in reddit I guess
07:24 PM MacGalempsy: JT-Shop you still around?
07:26 PM andypugh: I _try_ not to ignore the dumb questions. But often I can’t even tell what question they are asking.
07:28 PM malcom2073: Often they don't know what question they're asking either
07:30 PM MacGalempsy: http://www.demotivationalposters.org/image/demotivational-poster/0807/communication-sam-jackson-pulp-fiction-demotivational-poster-1215902363.jpg
07:30 PM chopper79: I ask dumb questions all the time. They I try to correct myself afterwords so it appears less dumb.
07:31 PM chopper79: Usually because after i post something I figure out I did not make any sense at all. My enter key is faster then my brain sometimes.
07:36 PM chopper79: All jokes aside.... The LCNC forum is the best one I have ever been on. The support is top notch. The help recieved on the here on the IRC channel is wonderful as well. Not may places I feel welcome, but I feel welcome here and on the forum. So to those on there and here..... Thank you and good job!
08:27 PM CaptHindsight: https://www.youtube.com/watch?v=fIJ34CK-3Lk came across one for $1500 Clausing 6913, 14" x 48"
08:31 PM gregcnc: no metric threading, but if in decent shape probably worth it, especially if it has a steady and couple chucks
08:32 PM MacGalempsy: sweet rig. whats this metric stuff?
08:32 PM gregcnc: I wish my clausing had metric threading
08:34 PM MacGalempsy: as a 'mericun your duty os to force imperial on the world
08:34 PM gregcnc: someone makes a metric gear set
08:39 PM chopper79: I am actually looking at lathes right now. Keep coming to the point where I need one for some project ro another.
08:39 PM MacGalempsy: http://www.demotivationalposters.org/image/demotivational-poster/0807/communication-sam-jackson-pulp-fiction-demotivational-poster-1215902363.jpg
08:39 PM MacGalempsy: OOPS
08:39 PM MacGalempsy: https://flic.kr/p/SqLEav
08:39 PM MacGalempsy: we picked up this baby today
08:40 PM MacGalempsy: $500k if we lose it
08:41 PM XXCoder: 500k if lose it?
08:41 PM chopper79: dang
08:41 PM MacGalempsy: yeah. like if it breaks off in the hole
08:41 PM MacGalempsy: thats discounted new is $1million
08:42 PM chopper79: yeah that is discount
08:43 PM XXCoder: whats it anyway
08:43 PM MacGalempsy: its a rotary steerable drilling asembly
08:44 PM XXCoder: oil drilling or something?
08:44 PM XXCoder: because its huge
08:44 PM MacGalempsy: yeah. we are drilling for oil this time
08:44 PM chopper79: and I get upset when I break a tap off in a hole.....
08:45 PM XXCoder: I broke tap in part 2 days ago. sucks each time. thankfully uncommon.
08:45 PM MacGalempsy: yeah. when something lime this breaks off, we end up fishing a while
08:45 PM chopper79: i agree it is not that common of a thing for me either. I am just glad they do not cost 500K
08:46 PM MacGalempsy: at 150k per day for a rig, fishing doesnt last too long
08:46 PM XXCoder: I guess tap was getting old, since we made over 200 parts on it, and one part uses tap 3 times
08:46 PM XXCoder: err typo, 100
08:46 PM chopper79: still... lot of holes for a tap especially if it was in steel
08:46 PM XXCoder: thankfully alum lol
08:46 PM chopper79: easier to extract
08:47 PM chopper79: still pain in the butt
08:47 PM MacGalempsy: edm that thing out
08:47 PM MacGalempsy: i need to pop my edms cherry
08:47 PM chopper79: I do not own an edm.....
08:47 PM chopper79: wan one, but that is another story
08:48 PM MacGalempsy: tested it, but havent gotten any further
08:48 PM MacGalempsy: just need to finalize the mill and get on it
08:49 PM chopper79: well.... later all I am off to get soe stuff done. Have a good one everyone
08:49 PM XXCoder: I need to get cracking and work on wiring
08:50 PM XXCoder: stupid question, - is ground right?
08:50 PM MacGalempsy: usually
08:50 PM XXCoder: ok
08:50 PM XXCoder: I have 24v to 12v and 24v to 5v dc-dc here :D
08:51 PM MacGalempsy: you running a common terminal block for each cirucuit?
08:52 PM XXCoder: im connecting all to psu
08:52 PM XXCoder: so both will have source of 24v
08:54 PM MacGalempsy: hmm. i would isolate the 12v + and - from the 24v + and -
08:54 PM XXCoder: 24v is input, the 12v and 5v is seperate
08:54 PM MacGalempsy: but you may ask in the elevtronics forum
08:54 PM XXCoder: and will connect to seperate parts of BOB
08:55 PM XXCoder: its 2 seperate dc-dc modules :)
08:55 PM XXCoder: I opted for fancy waterproof cased ones :P
08:56 PM MacGalempsy: cool. i got one of the 24 to 5
08:57 PM MacGalempsy: planning on a new system to eliminate ramps
09:47 PM MacGalempsy: with stepper drivers, is there any issue with running the small a4988 as opposed to the larger drives?
09:47 PM MacGalempsy: just for nema17
09:55 PM MacGalempsy: anyone in here use the tb6600?
09:55 PM XXCoder: I do, but not advanced enough to answer your question unfortunately.
09:56 PM os1r1s: MacGalempsy For a mill or a reprap?
09:56 PM MacGalempsy: want to convert this reprap project to a sls project
09:57 PM os1r1s: For that, a 4988 will be fine
09:57 PM MacGalempsy: was thinking space would be easier with the smaller
09:57 PM os1r1s: Though I'd likely put a fan on it
09:58 PM MacGalempsy: ok. going to run a 7i76e, but was tossing around driver options
09:58 PM MacGalempsy: like putting both hopper motors on one channel. however 10 tb6600 are only $56
09:59 PM XXCoder: 10 tb6600s??
09:59 PM XXCoder: not enclosed?
09:59 PM os1r1s: MacGalempsy They are cheap :)
09:59 PM MacGalempsy: enclosed
09:59 PM MacGalempsy: yeah. quite affordable
10:00 PM XXCoder: 10 axis machine heh
10:00 PM XXCoder: xyzw abcd
10:00 PM MacGalempsy: putting both hoppers on 1 channel
10:01 PM XXCoder: too bad xyzw machine probably will never happen lol
10:01 PM MacGalempsy: still drawing stuff up. fortunately my current setup is big enoug to experiment wit the hopper
10:01 PM MacGalempsy: 9 axis in the sim
10:02 PM MacGalempsy: plus spindle = 10
10:02 PM XXCoder: hmm dont think spindle counts?
10:08 PM MacGalempsy: i guess getting the tb6600 is the best deal because they go up to 5A
10:08 PM XXCoder: yeah
10:08 PM XXCoder: though my machine psu maxes out at 3a
10:08 PM MacGalempsy: the price difference is negligible
10:08 PM XXCoder: so steppers dont use all that much power.
10:09 PM MacGalempsy: the psu i have is 24v 27a
10:09 PM MacGalempsy: a beast.
10:12 PM MacGalempsy: just going to try a little laser for plastic
10:20 PM insomnia is now known as BipolarBear
10:38 PM XXCoder: https://www.youtube.com/watch?v=HJYvc-ISrf8
10:38 PM XXCoder: interesting
10:38 PM XXCoder: MacGalempsy: do it with laser ;)
10:41 PM MacGalempsy: interesting.
10:41 PM XXCoder: yeah
10:41 PM MacGalempsy: how about with a tattoo machine?
10:41 PM MacGalempsy: you first
10:41 PM XXCoder: nah just not possible
10:42 PM XXCoder: guy would have to be still as moves around as it moves
10:42 PM MacGalempsy: supe him up on pain killers first
10:44 PM XXCoder: lol
10:44 PM XXCoder: anyway its definitely interesting. graphics is cool. it apparently peaked in 1890s
10:44 PM XXCoder: they used fancy capentry stuff to make em
10:46 PM XXCoder: https://www.youtube.com/watch?v=5o5Wsaw7QF4
10:48 PM XXCoder: that one has higher friction I think., first link they used magnets for joints so theres far less friction
10:53 PM XXCoder: first one's website http://www.waynesthisandthat.com/harmonographs.html
10:53 PM XXCoder: blast from 1990s
11:44 PM -!- #linuxcnc mode set to +v by ChanServ
11:46 PM Wolfmetalfab is now known as Wolf_