#linuxcnc Logs

Mar 29 2022

01:25 AM Deejay: moin
02:00 AM W1N9Zr1 is now known as W1N9Zr0
02:10 AM -!- #linuxcnc mode set to +v by ChanServ
02:18 AM randy: morning
04:50 AM Tom_L: morning
05:01 AM mrec_: yes
05:02 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Spindle/BLDC_Wiring1.jpg
05:02 AM mrec_: I wonder if I can leave my setup like that or if I have to add an encoder to the motor directly
05:02 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Spindle/BLDC_Wiring2.jpg
05:03 AM mrec_: gnd, 3v/5v, 3x hall sensor outputs
05:03 AM mrec_: I asked the manufacturer of the lathe a few months ago and he said the motor is rated 310v so everything should be within specs I hope
05:03 AM mrec_: I will see if it will burn down
05:05 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/configs/NEW_MILL_SHOP_2.8.2/New_Mill_IO_Pinout.pdf
05:05 AM Tom_L: P4 shows the wiring
05:05 AM Tom_L: P5 shows the firmware settings
05:06 AM Tom_L: at least on mine... may vary some
05:06 AM mrec_: I wonder if I should buy a mesa card or try to use my DE2 FPGA board with it... I'm still undecided about that
05:12 AM JT-Cave: I gotta make a remote start stop for the new router motor the cord is too short and the switch is not in an easy place to get to
05:17 AM JT-Cave: hmm I have a couple of manual motor starters with switch guards that might be my starting point
05:39 AM JT-Cave: geez a german guy asked me about translations so I made the configuration tools translatable and told him how to do it... he does a power point presentation which is useless to me
09:59 AM coralgoat: I went into the shop to try to get Linuxcnc working with a 3 axis CNC router.
09:59 AM coralgoat: The shops limited information on the machine is these two link:
09:59 AM coralgoat: https://www.china-cncrouter.com/products/Mach3-USB-CNC-6040-3-Axis-4-Axis-Mini-CNC-Router-with-1500W-2200W-Spindle-Sink-Cooling-System-and-Z.html
09:59 AM coralgoat: https://www.china-cncrouter.com/downfile/2015120416433598141.pdf
09:59 AM coralgoat: I have Linuxcnc installed on a x86 desktop that meets the minimum system requirements.
09:59 AM coralgoat: http://linuxcnc.org/docs/stable/html/getting-started/system-requirements.html#cha:system-requirements
09:59 AM coralgoat: In stepconf I tried using the pinout information from:
10:00 AM coralgoat: https://forum.linuxcnc.org/49-basic-configuration/35628-basic-configuration-for-a-chinese-6040-cnc-router-please?start=10#122294
10:00 AM coralgoat: as well as
10:00 AM coralgoat: https://forum.linuxcnc.org/media/kunena/attachments/24974/jp31.jpg
10:00 AM coralgoat: However when I try testing the axes with the jog buttons the machine does not respond.
10:00 AM coralgoat: Here are pictures.
10:00 AM coralgoat: front panel:
10:00 AM coralgoat: http://0x0.st/oq1i.JPG
10:00 AM coralgoat: back panel:
10:00 AM coralgoat: http://0x0.st/oqQC.JPG
10:00 AM coralgoat: http://0x0.st/oqQh.JPG
10:01 AM coralgoat: case lid open:
10:01 AM coralgoat: http://0x0.st/oqQF.JPG
10:01 AM coralgoat: parallel port break out board:
10:01 AM coralgoat: http://0x0.st/oq1H.JPG
10:01 AM coralgoat: http://0x0.st/oq1o.JPG
10:01 AM coralgoat: CNC machine:
10:01 AM coralgoat: http://0x0.st/oq1r.JPG
10:01 AM coralgoat: http://0x0.st/oq1s.JPG
10:01 AM coralgoat: I was using a USB to parallel port adapter to test if I could jog the X, Y and Z axis.
10:01 AM coralgoat: Is the USB to parallel port adapter the reason why I can not jog the X, Y and Z axis?
10:02 AM coralgoat: I wanted to test jogging the axes before buying a PCIe parallel port card and a parallel to parallel cable.
10:05 AM coralgoat: For http://linuxcnc.org/docs/stable/html/config/stepconf.html#_axis_configuration I left it with the default values.
10:20 AM roycroft: i would never rely on anything usb-connected for a real-time application
10:21 AM roycroft: but if you're just testing, a usb to rs232 adapter should be fine, if you have a drive for the adapter installed on your machine
10:21 AM roycroft: test the usb to rs232 adapter outwith linuxcnc, if you haven't already
10:27 AM roycroft: you don't even need an rs232 device to do that - just connect td to rd on the rs232 side of the adapter, configure the port for no flow control and no local echo, then tip to the port and type stuff
10:27 AM roycroft: if you see it echoed back on the screen the adapter is working properly
10:31 AM coralgoat: roycroft, thanks for mentioning that. I do not have any other rs232 device other than the 3 axis controller box.
10:32 AM coralgoat: roycroft, would using a female to female jumper cable be okay for "just connect td to rd on the rs232 side of the adapter"?
10:33 AM roycroft: if it shorts td to rd, sure
10:33 AM roycroft: others here will be more help configuring hal, btw
10:33 AM roycroft: but you have to ensure that your adapter is working properly before you get to the point of using it with linuxcnc
10:40 AM coralgoat: roycroft, would http://www.linuxcnc.org/iso/linuxcnc-2.8.2-buster.iso include a driver for a USB to rs232 adapter?
10:41 AM roycroft: if i'm honest, i have no idea
10:41 AM roycroft: plug it into the machine while you're monitoring the console and see if it's recognised
10:41 AM roycroft: if so, note its device name and use that when connecting to it
10:42 AM roycroft: you might want to do "apt -y install cu"
10:42 AM roycroft: so that you can connect to the port
10:42 AM roycroft: i doubt that cu is on the iso, but you can try it before attempting to install it
10:46 AM coralgoat: I can install cu using apt and having the cu .deb package on a USB stick.
10:48 AM coralgoat: roycroft, what programs would I need to have installed to be able to do "configure the port for no flow control and no local echo, then tip to the port and type stuff"
10:51 AM roycroft: cu
10:51 AM roycroft: tip used to be an alias to cu
10:51 AM roycroft: if you're not comfortable with command line tools then you might install something like minicom
10:52 AM roycroft: or kermit
10:52 AM MrSunshine_ is now known as MrSunshine
10:53 AM roycroft: there's a utility called "setserial" that may help with configuring the port
10:53 AM roycroft: you'd need to install that as well with aptitude
10:54 AM roycroft: i'm not familiar with it, so i'm not sure how useful it would be
11:06 AM coralgoat: roycroft, thank for your suggestion on what to look into to see if the USB to rs232 adapter is the problem.
11:06 AM roycroft: no worries
11:06 AM roycroft: i wish i could be more help, but i haven't done that in a while on linux, and i don't remember exactly how to do it
11:07 AM roycroft: there's no /etc/ttys or /etc/gettytab on linux, so it's not done the traditional way
11:09 AM coralgoat: I think another part of my issue seems to be lack of documentation for the 3 axis controller and particularly it's parallel port break out board.
11:10 AM coralgoat: Any suggestions for low cost alternatives to the 3 axis controller that is know to work well with Linuxcnc that I should consider purchasing.
11:22 AM -!- #linuxcnc mode set to +v by ChanServ
11:40 AM coralgoat: "low cost" is probably too vague and makes it hard to make a suggestion.
11:41 AM coralgoat: Any suggestions for alternatives to this 3 axis controller that is know to work well with Linuxcnc.
11:51 AM JT-Cave: yum lunch time
11:52 AM perry_j1987: still coffee time for me
11:52 AM JT-Cave: that's all day for you I think
11:53 AM perry_j1987: well... ya
11:53 AM perry_j1987: somebody's gotta drink the stuff
11:53 AM perry_j1987: might as well be me
11:59 AM JT-Cave: roycroft, I think I have a shaper...
12:00 PM JT-Cave: no idea how old it is or what brand yet...
12:02 PM roycroft: neither of those things matter
12:02 PM roycroft: how powerful is the motor, and what size is the spindle?
12:03 PM roycroft: if it only as a 3/4" spindle then all it's really doing is consuming real estate
12:03 PM roycroft: but if it has spindles up to 1-1/4" it could be useful, with a decent motor
12:04 PM roycroft: a decent shaper will come with a 3/4", a 1", and a 1-1/4" spindle
12:05 PM roycroft: and you need variable speed on the motor, of course
12:05 PM roycroft: but most 1-1/4" spindle shapers are 3phase, so variable speed is easy to add if it doesn't have that feature already
12:06 PM * roycroft realises he made an assumption that this is a wood shaper, as jt-cave has been doing a lot of woodworking lately
12:06 PM roycroft: if it's a metal shaper, that's a completely different story
12:07 PM roycroft: if it's a metal shaper, then consuming real estate is a big part of what it is, but it's so much fun that doesn't matter
12:08 PM JT-Cave: yes a wood shaper and thanks for the information
12:09 PM JT-Cave: so a 3/4" spindle is not any better than a 3.25hp router?
12:11 PM roycroft: not really
12:12 PM roycroft: in fact, a 3/4" shaper probably has a 1hp or 1.5hp motor
12:12 PM roycroft: there are shaper cutters available with profiles not found (easily, at least) on router cutters
12:13 PM JT-Cave: ouch that's pretty small
12:13 PM roycroft: so that may be a reason to get it, if you need those profiles
12:13 PM JT-Cave: I'll have to see what it is...
12:13 PM roycroft: but if you want to do single pass raised panels and the like, with the ginormous shaper cutters, you need a 1-1/4" spindle and 3-5hp
12:13 PM JT-Cave: thanks for the info
12:13 PM roycroft: and, of course, the ability to dial the speed down to 10,000rpm or less
12:14 PM JT-Cave: that sounds like a production shop and I make chicken furniture
12:14 PM JT-Cave: lunch minute is up back to work for me
12:14 PM roycroft: there's a reason that 3/4" shapers are found on cl for cheap all the time
12:15 PM JT-Cave: this one is not on cl, a buddy knows the old guy who doesn't use it anymore
12:15 PM roycroft: https://eugene.craigslist.org/tls/d/eugene-davis-wells-shaper/7453290856.html
12:15 PM roycroft: that one is pretty nice, and a good price
12:16 PM roycroft: although 1-1/8" is an odd spindle size
12:17 PM roycroft: i wonder if that is a typo
12:23 PM roycroft: i cannot find a davis & wells 1-1/8" shaper, so i'm going to assume that's a typo, and that it's a 1-1/4" shaper
12:23 PM roycroft: it could be a 1", but with a 7.5hp motor it makes more sense that it's 1-1/4"
04:21 PM solarwind: Hey guys, I encountered a really strange problem
04:22 PM solarwind: My friend asked me to help him weld to pieces of mild steel together and then braze it with bronze brazing rods for a brass plated look
04:22 PM solarwind: One part behaved just like I expected mild steel to behave. It TIG welded together well and the brass took to it well with flux and an oxy acetylene torch
04:23 PM solarwind: The other piece looked like a piece of flat bar of mild steel bent into a semi circle shape. I cleaned it up and it looked bright and shiny
04:23 PM solarwind: But when I tried to weld it, I get INSANE porosity
04:23 PM solarwind: TIG welding causes spatter and fouled my gas lens
04:23 PM solarwind: Oxy acetylene welding won't even form a puddle, it's behaving almost like it's foam. A crater just forms and it caves into itself
04:24 PM solarwind: And flux + bronze brazing rod will not stick to it
04:24 PM solarwind: it just balls up like water on your windshield. I've _never_ seen this before
04:24 PM CloudEvil: Is it magnetic?
04:24 PM JT-Shop: do a spark test on it
04:25 PM solarwind: Yup it's magnetic
04:26 PM solarwind: Grinding wheel produces very faint sparks
04:27 PM solarwind: Not the bright obvious sparks like normal mild steel would
04:27 PM solarwind: They're orange and faint
04:28 PM roycroft: could it be ductile iron instead of steel?
04:29 PM solarwind: That's what I'm thinking, it makes the same kind of sparks as those ductile iron pipe fittings from home depot
04:29 PM solarwind: But I've brazed those before successfully. They braze just as well as mild steel
04:29 PM solarwind: The bronze brazing rod is not taking to this at all
04:29 PM roycroft: yes, that sounds like the spark pattern, and would also account for the porosity
04:30 PM solarwind: I just heated it past its critical point and hit it with a grinding wheel, it became very hard
04:30 PM solarwind: so it's looking more like the high carbon "ductile iron"
04:42 PM solarwind: It's actually barely sparking at all
04:42 PM solarwind: I re-dressed my grinding wheel to be sure
04:43 PM solarwind: The first piece is sparking just like any mild steel. Second one is barely sparking at all, very difficult to grind too
04:43 PM roycroft: it might have a bunch of zinc and random stuff in it
04:43 PM solarwind: I switched to an aluminum grinding wheel which has higher hardness. That at least was able to remove some material, but still barely any sparks
04:43 PM roycroft: i.e. pot metal
04:44 PM solarwind: My friend said it's 1/8" cold rolled. I've never seen cold rolled like this...
04:44 PM roycroft: :q
04:44 PM roycroft: ack
05:07 PM roycroft: i ended up dealing with the dkim stuff yesterday for far too long, and never got my dust collector back online
05:07 PM roycroft: today i'll do that as soon as i'm done with work
05:07 PM roycroft: i have some refinements to do with dkim, but mail is working properly now, so it is no longer urgent
05:13 PM roycroft: i should bill google for all the time i'm spending on this crap
05:13 PM roycroft: the dkim crap, that is
05:26 PM Tom_L: i'm sure they'll cut you a check right away
05:30 PM * JT-Shop found a 30A 3Ph manual starter and is using that to turn the router on an off
05:30 PM JT-Shop: I also had a couple of Square D manual starters but they are rated at 1hp
05:31 PM Tom_L: i put one similar to that on my compressor
05:32 PM Tom_L: overkill and only using 2 legs but it works
05:33 PM Tom_L: but it is 5 hp
05:35 PM JT-Shop: I'll just use one leg... a 15a light switch would be enough but not as sexy as an aluminum case HD switch
05:37 PM Tom_L: you need a lever to pull ehh?
05:37 PM JT-Shop: LOL not that big just a light switch looking thing
05:39 PM _unreal_: making boiled dinnaaa tonight
05:52 PM t4nk_freenode: BEEEErrriiiiiinnnnn
05:52 PM _unreal_: oh shit its the po po (police
05:52 PM t4nk_freenode: for god's sake man, where have you been
05:52 PM _unreal_: no intenet
05:52 PM _unreal_: I'm on my phone right now
05:53 PM _unreal_: !@#%!@#$^ FPL florida power n lite did some big project and cut the primary DATE wires for phone and internet to about 800 homes in my area... SIGH still not fixed
05:53 PM t4nk_freenode: I thought you grew dates in your own garden
05:54 PM t4nk_freenode: anyhow man, made any progress with your build?
06:18 PM _unreal_: data
06:19 PM _unreal_: and I prob could
06:22 PM XXCoder: date wires. dating wires? ;)
07:03 PM _unreal_: got to run to the store back in a bit
07:06 PM roycroft: well my dust collection system is back online, and it is somewhat improved, but not as improved as i hoped
07:06 PM roycroft: this was just phase 1 of the refurbishment, though, and there are four phases in total
07:07 PM roycroft: so as long as i continue to see improvements each time i do an upgrade i should be happy in the end
07:09 PM Tom_L: so you're 3/4 sad still
07:13 PM roycroft: i'm not sad at all
07:13 PM roycroft: it was functional before i started
07:13 PM roycroft: now it's more functional
07:13 PM roycroft: and will continue to get better
07:14 PM roycroft: perhaps i misspoke
07:14 PM roycroft: i should be happier in the end
07:14 PM roycroft: i am already happy :)
07:14 PM XXCoder: lol nice tho
07:14 PM XXCoder: https://www.reddit.com/r/3Dprinting/comments/trswyh/second_and_final_test_with_fake_quantum_filament/
07:14 PM XXCoder: my second day of fun
07:15 PM roycroft: artemis i starts its launchpad wet testing on friday
07:17 PM roycroft: the livestream starts friday at 12pm edt
07:22 PM t4nk_freenode: well, what's really sad is the amount of rubbish they produce with 3d printers
07:22 PM t4nk_freenode: nonsense upon nonsense, is all I see
07:22 PM t4nk_freenode: a snake, an icecream, a gorilla
07:24 PM t4nk_freenode: starwars spaceships
07:24 PM t4nk_freenode: lightsabers
07:30 PM Tom_L: we can't all be rocket scientists
07:31 PM t4nk_freenode: but we Can all be figurine masters ;)
08:00 PM roycroft: but we can all pretend to be rocket scientists on the internet
08:02 PM Tom_L: of course!
08:02 PM Tom_L: but my rocket is bigger than your rocket :)
08:07 PM t4nk_freenode: lol
08:08 PM t4nk_freenode: but then again... our spelling would give us away :|
08:11 PM roycroft: if you're worried about the size of your rocket, the internet can sell you things to remedy that
08:13 PM t4nk_freenode: hehe
08:13 PM t4nk_freenode: hang on
08:13 PM t4nk_freenode: I never get any mails telling me how to reduce the size!
08:21 PM roycroft: i just got an email imploring me to consider and defend god's rights in my open source software, lest god be blasphemed and people take the place of god to enslave themselves and others
08:22 PM roycroft: i can only attribute that to someone's having run out of meds
08:22 PM roycroft: there's no way i can logically parse any of it
08:31 PM CaptHindsight[m]: Can't god defend his own rights? What kind of god is this anyway?
08:37 PM CaptHindsight[m]: feeble gods
08:39 PM roycroft: i don't know
08:39 PM roycroft: i'm not on a first name basis with the almighty
09:12 PM solarwind: Any ideas for a poor man's ring roller? I just need to roll 1/8" flat bar into a circular ring.
09:12 PM solarwind: I have a lathe and coincidentally a solid cylindrical chunk of steel that is the exact inner diameter such that it can be used as a die
09:13 PM roycroft: a source of heat, a big hammer, and the horn of your anvil
09:13 PM solarwind: I can probably heat the flat bar and hammer it onto the die
09:13 PM solarwind: Or anvil yes
09:13 PM roycroft: the harbor freight ring roller is <$100, and works reasonably well
09:14 PM solarwind: Ah didn't know that existed, thanks
09:14 PM roycroft: it handles 1/8" flat bar just fine
09:15 PM roycroft: minimum diameter is 75mm
09:15 PM roycroft: if you need smaller rings than that, make them on the lathe
09:16 PM solarwind: Yeah that'll work just fine for me, thanks
09:17 PM Tom_L: what diameter?
09:18 PM solarwind: 15cm
09:19 PM solarwind: Helping a friend make some kind of weird microphone holder that'll apparently be broadcasted on international TV
09:19 PM roycroft: does it have to be exactly that size?
09:19 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/spindle_cooler/Cooler1.jpg
09:19 PM roycroft: it would be easiest to take a slice off a piece of pipe
09:19 PM Tom_L: find something to wrap it around
09:19 PM Tom_L: clamp the end
09:19 PM Tom_L: start wrapping
09:19 PM solarwind: Tom_L I have a cylinder of solid steel the exact size needed, a coincidence
09:19 PM Tom_L: incidentally that was full of water or it would have collapsed
09:19 PM solarwind: That was my first thought
09:20 PM solarwind: Tolerances of "forging by hand" are acceptable
09:20 PM Tom_L: so forge by hand
09:20 PM roycroft: i'd go to the scrap yard and get a piece of 6" pipe
09:20 PM solarwind: That was the second thought lol, just was asking in case someone had an idea that was better
09:21 PM Tom_L: you need something smaller than the exact size needed
09:21 PM Tom_L: spring back
09:21 PM solarwind: Tom_L yeah the cylinder I have is slightly smaller and would account for that
09:21 PM Tom_L: push it thru some rollers repeatedly
09:22 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/spindle_cooler/Cooler2.jpg
09:22 PM Tom_L: it fit snug and worked great
09:22 PM Tom_L: it now sports a new spindle motor
09:23 PM solarwind: Is that copper pipe wrapped around the case of an induction motor?
09:23 PM Tom_L: dc
09:23 PM Tom_L: for cooling it
09:23 PM solarwind: Is there any thermal compound between the motor and the pipe?
09:23 PM Tom_L: see when i ran it, it got pretty hot
09:23 PM Tom_L: nope
09:23 PM Tom_L: just sweat from the ice water
09:23 PM solarwind: that's such a small contact patch
09:24 PM Tom_L: but it did the job
09:24 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/spindle_cooler/Cooler5.jpg
09:24 PM Tom_L: before i found a home for the bucket
09:25 PM solarwind: I like the modern art paint job on your wall
09:25 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Spindle/Motor_mounted1.jpg
09:25 PM Tom_L: replacement
09:25 PM solarwind: What's the power rating of those motors?
09:26 PM Tom_L: which?
09:26 PM solarwind: My CNC router has a 4kW water cool spindle
09:26 PM Tom_L: the sherline?
09:26 PM solarwind: Both of them
09:26 PM Tom_L: ~600w
09:26 PM Tom_L: the new one is 1.2kw
09:26 PM Tom_L: but not high speed like your spindle
09:27 PM Tom_L: ~5500 tops
09:27 PM solarwind: Yeah mine is the standard 400Hz type. I have to put it on a dyno at some point and see what happens when it's pushed to its rated power continuously
09:27 PM Tom_L: but you can't rigid tap with yours either
09:28 PM solarwind: Yeah not with that one
09:30 PM Tom_L: so 2 choices really, shove it thru some rollers or wrap it around a cylinder
09:31 PM Tom_L: ideally the rollers would be driven
09:35 PM Tom_L: that's typically how industry does it
10:10 PM roycroft: i've run 1/8" flat bar through the hf ring roller
10:10 PM roycroft: it's rated to 3/16", but i don't think i would go any thicker than 1/8", unless the bar were really narrow