#linuxcnc Logs

Jun 12 2021

#linuxcnc Calendar

01:03 AM Deejay: moin
01:53 AM veegee_ is now known as veegee
01:53 AM veegee: Ah so everyone's here now
01:59 AM veegee: Deejay where are you located?
01:59 AM veegee: Or do you just have a messed up sleep schedule like me?
02:00 AM Vq: Good morning folks
02:01 AM veegee: It's 3am and my sleep meds are not kicking in as well as I hoped
02:02 AM Vq: That's a bummer.
02:02 AM veegee: Time to machine some custom syringe plungers so I can use them for oil. Standard syringe plungers disintegrate and seize up, so useless for oiling applications
02:03 AM Vq: It's 08:50 here in sweden.
02:03 AM veegee: Luckily all it takes is some round bar and nitrile o rings
02:03 AM Vq: 10 minutes left of what we refer to as morning.
02:03 AM veegee: The plastic cylinder part of the syringe holds up fine though at least
02:04 AM veegee: https://www.coleparmer.ca/i/masterflex-stainless-steel-syringe-50-ml-viton-o-ring-luer-lock/7404436
02:04 AM Vq: What part disintegrates?
02:04 AM veegee: $1,200 for a syringe lol
02:05 AM veegee: Vq https://assets.fishersci.com/TFS-Assets/CCG/BD/product-images/1482344.JPG-650.jpg see the black part of the plunger?
02:05 AM veegee: These are intended for polar substances
02:05 AM Vq: 1.2 kCAD, wow
02:05 AM veegee: Or for squirting water around your gums after dental surgery
02:06 AM veegee: But I use them for dispensing oil
02:06 AM veegee: That black rubber part swells up and disintegrates
02:06 AM veegee: some oils make it useless after one day, some cause it to fail after a week
02:07 AM Vq: ok, the sealing cylinder.
02:07 AM veegee: The rest of the syringe is fine though. So I just need to turn a custom plunger and use nitrile o rings for the seals
02:07 AM veegee: I use these to dispense oil into air tools, machine slide ways, pretty much anything that needs oil
02:08 AM veegee: They're cheap and available anywhere, but none come with nitrile/viton seals
02:09 AM veegee: And ain't nobody gonna pay $1,200 for a stainless steel syringe you can machine yourself with $10 worth of stainless steel
02:10 AM Vq: Do you need to measure the amount of oil you use?
02:11 AM veegee: Vq no, it's purely for convenience
02:11 AM veegee: There's no other way to cleanly dispense just a few drops of oil
02:12 AM veegee: Also I use it to get into tight areas
02:12 AM Vq: https://www.biltema.se/bil---mc/bilverktyg/oljeverktyg/Pumpar/sugpump-for-fordonsoljor-2000033701
02:13 AM veegee: Too big
02:13 AM Vq: Maybe it's on the large side.
02:13 AM Vq: https://www.biltema.se/bil---mc/bilverktyg/oljeverktyg/Pumpar/sugpump-for-fordonsvatskor-2000039991
02:13 AM Vq: A 200ml one.
02:13 AM veegee: I have these and they work fine, but again, too big and too much oil
02:13 AM veegee: https://www.ballistol-shop.de/images/product_images/popup_images/retro-oeler.jpg
02:14 AM veegee: Oh also the laur lock of medical syringes is useful because I have an assortment of tips
02:15 AM veegee: I have some very fine tips to oil the bearings of my screw drivers, or the keys of my mechanical keyboard
02:16 AM veegee: or pretty much any kind of bearing. So the medical syringes are perfect. Just need to machine plungers. Also a fun thing to machine while your "DO NOT OPERATE HEAVY MACHINERY" sleep medication kicks in
02:16 AM Vq: You'll have to use your light machinery lathe then.
02:17 AM veegee: my 14x40 lathe is the lightest machine tool in my workshop and it weighs at least 800kg
02:17 AM veegee: it's going to get even heavier after the spindle motor upgrade
02:19 AM Vq: Doesn't sound that heavy to me, you'll be alright.
05:37 AM JT-Cave: morning
07:44 AM perry_j1987: morning
07:48 AM perry_j1987: mmm coffee
07:53 AM Tom_L: morning
08:12 AM Tom_L: partly cloudy - sunny Hi88F
08:12 AM Tom_L: quite the T-storm last night
08:13 AM Tom_L: RH 89%
08:54 AM JT-Cave: very muggy here
08:54 AM Tom_L: yup
09:25 AM perry_j1987: looking forward to getting this https://amzn.to/3pTnyYX setup on my 6040
09:25 AM perry_j1987: so tired of tool changes lol
09:36 AM _unreal_: JT-Cave, its 87+ here
09:36 AM _unreal_: MUGGY!!!!
09:52 AM JT-Shop: I use a dowel...
09:59 AM perry_j1987: ya i just want to automate it a way a bit heh
10:01 AM JT-Shop: you have a tool changer?
10:03 AM snakedLX is now known as snaked
10:26 AM Tom_L: i use a 1" gage block
10:28 AM JT-Shop: what method do you use with a square block?
10:30 AM Tom_L: slide it under the tool like you do
10:30 AM Tom_L: however i put my model 1" below zero in the cad which creates a safe zone
10:31 AM Tom_L: so everything is set 1" low in the model
10:31 AM Tom_L: on the bigger machines we either did 3" or 6 and i just got used to doing it like that
10:31 AM JT-Shop: slide the block under as you raise Z?
10:32 AM Tom_L: yes then turn on the fine adjustment on the pendant and slide it back and forth until it catches the cutting edge slightly
10:32 AM Tom_L: same basic idea as what you do
10:33 AM Tom_L: but the difference is, i move my model -1" in the cad
10:33 AM Tom_L: so any time you tell it to go to x0 y0 z0 you can feel safer about it
10:33 AM JT-Shop: ah got it you call the top of the block 0
10:33 AM Tom_L: yessir
10:34 AM JT-Shop: makes sense to me
10:34 AM Tom_L: i just got a 1" gage block i keep in my calipers to check them and set the tools
10:35 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/calipers/Mitutoyo2.jpg
10:36 AM JT-Shop: did you build that box?
10:36 AM Tom_L: yessir
10:37 AM JT-Shop: nice, you even recessed the hinges
10:37 AM Tom_L: :)
10:37 AM JT-Shop: I need to make a box for my electronic C clamps
10:37 AM Tom_L: i had one for my fowler too but they quit working
10:39 AM Tom_L: i ran out of walnut or i'd have used that
10:39 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/temp/caliper.jpg
10:40 AM JT-Shop: looks like X has 0.001" following error at rapid speed of 180IPM
10:41 AM JT-Shop: how did you cut the scallop for the gauge block?
10:41 AM Tom_L: surface
10:41 AM Tom_L: with a ballnose
10:42 AM Tom_L: probably did an arc in YZ
10:43 AM Tom_L: dunno if i have that model anymore
10:43 AM Tom_L: same way i did the cup on that steel mold
10:44 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A3/A3_Mold_P2.JPG
10:44 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A3/Mold_Rev2/Funnel_view.jpg
10:45 AM Tom_L: this kbd i've been cleaning is being stubborn
11:00 AM JT-Shop: I usually spill something in them and have to buy another one lol
11:05 AM Tom_L: i'm going to extreme and removing the switches, taking them apart and cleaning them in the ultrasonic cleaner
11:06 AM JT-Shop: wow
11:07 AM Tom_L: it's an old keyboard with 'real' switches
11:07 AM Tom_L: i happen to like it
12:03 PM roycroft: it's hard to find decent keyboards these days
12:13 PM cloudevil_ is now known as CloudEvil
01:37 PM JT-Shop: well crap, I just made a long post on the forum and the text got deleted...
03:07 PM Loetmichel: Oh mann... just drove to the fuel station for a pack of smokes... halfway there "something is different"... Hmm... "AHHHH, forgot the prescriptuion glasses at home! THATS why its all so blurry..."... i should really remember to wear those while driving. cant read a single street name without :frowning: (not to mention getting caught, thats a fine at least)
03:11 PM dlarue: setting irc app up, checking for errors.
03:12 PM dlarue: looks like it's working on this end. and someone let me know this works?
03:16 PM dlarue: looking for why my machine might be moving really slow when it should be moving at 100mm/s. It's a laser cutter trying to do raster engraving with each move having a spindle speed change.
03:16 PM dlarue: the spindle speed change is what changes the laser power level. G91, G1X-5F12000S0, G1X-0.1S48.591, G1X-0.1S43.772, G1X-0.1S40.358, G1X-0.1S39.354
03:26 PM JT-Shop: aye you're here
03:50 PM JT-Shop: dlarue, it's quite possible you're encountering queue busters for the interpreter, however I can't find much information on them other than in the remap document
03:54 PM Roguish: JT-Shop, check it out......... https://www.bloomberg.com/news/articles/2021-06-11/lumber-prices-post-biggest-ever-weekly-drop-with-buyers-balking?srnd=premium
04:03 PM Tom_L: you've reached your digital limit....
04:03 PM Tom_L: must be a paid subscription?
04:03 PM Roguish: oh yeah, bloomberg is a paywall
04:04 PM Roguish: they give a couple articles to read each month, that and whatever is on the front page.
04:05 PM CaptHindsight[m]: dlarue: is workings, how are you steering the laser?
04:06 PM Roguish: Tom_L, you asked a few day ago what i've been working on. here it is, not in any real order....
04:06 PM Roguish: https://noelrodes.weebly.com/pm940.html
04:06 PM dlarue: Jt-Shop, thx and I thought that too as I've done some testes on the 1 vs 50 segment buffer. So I enabled the Z axis and verified I had ARC_BLEND=1 enabled. made no difference.
04:06 PM Roguish: converting a new PrecisionMatthews pm-940v
04:06 PM dlarue: Surely LinuxCNC would not disable the queue with spendle settings.
04:07 PM CaptHindsight[m]: take the spindle settings out of the g-code, see if it moves faster
04:08 PM CaptHindsight[m]: is your format for the g-code really setting the feed rates properly?
04:08 PM dlarue: good idea. Off to look at awk/sed to see what it'll take to do that.
04:09 PM CaptHindsight[m]: copy paste 50 lines or so and edit by hand, should not take long
04:10 PM CaptHindsight[m]: dlarue: using galvos are XY Cartesian system?
04:10 PM dlarue: true, prob less than figuring out the commands to do the whole file. I'll do 2 passes along the X axis.
04:11 PM dlarue: sorry, I don't know what galvos is.
04:17 PM JT-Cave: https://www.nasdaq.com/market-activity/commodities/lbs
04:19 PM JT-Cave: dlarue, are you using G64 P(tolerance)?
04:20 PM dlarue: yes, pretty small but also tried 1.0 and little difference: G64 P0.010 Q0.015 ; Path Blending to help fix rounded corners
04:21 PM JT-Shop: ok just checking
04:21 PM dlarue: the rastering is along the X axis so just straight lines and then at the end a small Y move and back across the X again.
04:24 PM dlarue: oh man, at 254 DPI there's a heck of a lot of X commands until the first Y move. vim search and replace I know but how to search find "S" and then execute d$...
04:27 PM CaptHindsight[m]: https://i.imgur.com/LxSPzg7.mp4 slow moves using analog galvos
04:30 PM CaptHindsight[m]: how are you generating your g-code?
04:31 PM dlarue: no galvanometers on this $350 laser cutter.
04:31 PM CaptHindsight[m]: if you have a gazillion lines for very short segments it will likely move pretty slowly
04:31 PM dlarue: BTW, my removing all the spindle speed settings it looks like it's moving at speed or closer.
04:32 PM CaptHindsight[m]: using spindle speed for laser power has proven to be slow
04:32 PM CaptHindsight[m]: use PWM and real time ON/OFF, m-codes
04:33 PM dlarue: G91 so relative moves and lots of lines moving just .1mm and changing the spindle speed which would be changing the laser output power. That's how it works with GRBL and Smoothieware.
04:34 PM CaptHindsight[m]: http://linuxcnc.org/docs/html/gcode/m-code.html#mcode:m62-m65
04:35 PM CaptHindsight[m]: are you running it as a raster?
04:37 PM dlarue: correct, I just got the machine operating under LinuxCNC and just got hardware PWM control working. Not PDM but PWM at 5KHz. I've associated the PWM to spindle-speed after scaling it to 0-1000.
04:37 PM CaptHindsight[m]: what are your settings for max speeds and accel in your config file?
04:37 PM CaptHindsight[m]: if the machine is configured for slow moves it just ignores the high feed rates
04:38 PM CaptHindsight[m]: I'd say forget what GRBL and poopieware does, look at how pros control machines and start from there
04:39 PM JT-Shop: I find that most machine acceleration is 10-20 times higher than max velocity
04:39 PM CaptHindsight[m]: not from know-it-all toy makers
04:40 PM dlarue: max vel=150 and max acc=4500. It'll run fast, will post a link to video when I find it.
04:40 PM * JT-Shop is running out of ideas LOL
04:42 PM dlarue: https://www.youtube.com/watch?v=EW6qwYNMCkA
04:43 PM dlarue: ya, one of the reasons for moving all of my machines(laser cutter, 3D printer and cnc) to LinuxCNC was because their firmware was designed for when you needed lots of $$ to run a real machine controller.
04:44 PM dlarue: there is definately an issue with spindle control and movmements.
04:44 PM CaptHindsight[m]: it really wasn't, they just saw an opportunity to make a buck
04:44 PM dlarue: nope, RepRap was not in it for the buck. all open source...
04:44 PM CaptHindsight[m]: they know that most 3d printer buyers are gullible
04:45 PM CaptHindsight[m]: much of reprap was hijacked by con men
04:45 PM CaptHindsight[m]: "FFF is going to revolutionize manufacturing"
04:45 PM dlarue: this is before there were any commerical / consumer 3D printers. Everything spun off of what they did and all those who made the RepRap machines so much better. They just stuck with cheap controllers.
04:47 PM dlarue: It was only the last last few years an rPi could run LinuxCNC. I've got Machinekit on a beaglebone/CRAMPs setup and that was bleeding edge for lowend CNC control of <$500 machine.
04:48 PM CaptHindsight[m]: old PC's were always cheap and ARM boards have been available that run LCNC for as long as the poopie project
04:48 PM dlarue: RepRap was/is open source so anyone can use it. Even to make a buck. And yes, there's junk out there but there are also some pretty good machines too.
04:48 PM CaptHindsight[m]: we ran LCNC on cubieboards back in '13-14
04:49 PM XXCoder: one of things i really dislike about reprap is utter lack of control on it. you cant alter rapid feed, it dont have real kind of e-stop
04:49 PM XXCoder: it uses machine coord, and not g54 so on
04:50 PM CaptHindsight[m]: the poopieboard II is for fanboys and suckers
04:50 PM CaptHindsight[m]: buy the Chinese clones
04:50 PM dlarue: RepRap was/is low end stuff, stuff home DIYers could throw together without engineering degrees and software develoepr degrees nor mechanical engineering degree.
04:50 PM XXCoder: prusa is best i have seen so far, and still dont have what i listed
04:51 PM dlarue: I would not be here today had I not been able to build a Mini Kossel 7 years ago for ~$400 with linear rails.
04:52 PM dlarue: Agreed, Prusa is good but they are sticking with the controller that gets the job done good enough... Again, I'm trying to use LinuxCNC because from everything I've seen, they all went with the micro controller
04:52 PM dlarue: and limited capabilites because of cost.
04:54 PM dlarue: LinuxCNC on a rPi and a $45 LPC1768/9 3DP board is still not a $30 arduino/RAMPs but well under $100.
04:54 PM CaptHindsight[m]: real *duinos are not cheap, the Chinese clones are
04:55 PM CaptHindsight[m]: Allwinner and Rockchip ARM SOC's are <$6 + RAM
04:55 PM dlarue: it's open source so people are building boards with 328 chips and putting arduino bootloader and opensource firmware on their boards for very little money.
04:55 PM CaptHindsight[m]: give the designs to the Chinese vendors to buy it cheap
04:55 PM CaptHindsight[m]: let them make $1 on each board
04:56 PM dlarue: I don't think you see a "real" arduino in Carbide3D Shapeokos. Don't they make a custom board with the 328... Same for Prusa.
04:58 PM dlarue: I just saw the Allwinner A64 has a single realtime uCPU onboard kinda like the BBB PRUs. Very cool. I'm kinda into this Remora stuff and I'm good with how it's working. It just seems I need to figure out what's
04:59 PM dlarue: what's going on in LinuxCNC to get each machine operating even close to what those cheap chinese controller firmware is doing.
05:00 PM CaptHindsight[m]: H3/H5/H6 also has the ARISC microcontroller
05:00 PM dlarue: Until/unless someone sets up LinuxCNC so that it can do at least the same as the other firmware, people won't look at it.
05:00 PM CaptHindsight[m]: do you know that the PRU's in the BBB are microncontrollers?
05:00 PM dlarue: yes, 200MHz uCPUs
05:00 PM dlarue: direct memory access...
05:00 PM CaptHindsight[m]: they just call them PRU's to make them sound like they are something different
05:01 PM CaptHindsight[m]: clever marketing
05:01 PM snakedLX is now known as snaked
05:01 PM dlarue: whatever, it works and worked well for Machinekit and 3D printing controlling the steppers.
05:02 PM CaptHindsight[m]: "unless someone sets up LinuxCNC so that it can do at least the same as the other firmware" do what as what other firmware?
05:02 PM dlarue: Good to know all of those processors have an embedded ARISC onboard. But until someone does something with it and gets the word out, nobody will see or use it but proprietary commerical projects.
05:03 PM CaptHindsight[m]: oh you mean a popularity contest
05:04 PM dlarue: for example, lookahead for extruder pressure advance issues.
05:04 PM CaptHindsight[m]: yeah that could be fun for a social engineering project
05:06 PM dlarue: Scott Alford had Remora running in 2017 but nobody knew of it. Projects like Klipper wouldn't be needed if they'd known of Remora... reality is, cool stuff needs something people want to do and use or it won't get traction.
05:06 PM CaptHindsight[m]: FDM/FFF has lots of limits since it's so slow using only one nozzle at a time, and it extrudes so slowly
05:07 PM CaptHindsight[m]: popularity contest for open source
05:07 PM dlarue: exactly. Arduino would be nowhere without lots and lots of DIYers picking it up and making cool things. It'd take a large corporation to spend millions in marketing over years to try and grow what they have.
05:09 PM CaptHindsight[m]: it's nowhere now except for a leader in popularity
05:09 PM CaptHindsight[m]: if that is your goal
05:09 PM dlarue: oh shit... another FDM/FFF isn't where it's at, too slow, etc and SLA is the cats meow... gawd, I've heard that too many times in the past 6 years....
05:10 PM dlarue: And nobody should mess with FreeCAD, Sketchup, Blender etc because SolidWorks is the only tool people should learn... Heard that too.
05:10 PM CaptHindsight[m]: have you tried facebook?
05:11 PM CaptHindsight[m]: if the reprap community was interested in really advancing additive tech then they would focus on materials
05:12 PM dlarue: fuck,,,, getting nowhere here.... sorry, but I'm done talking about anything but how to setup LinuxCNC to do laser cutting. What RepRap should be doing can probable befound on #altWTF channel.
05:12 PM roycroft: the reprap community seems primarily interested in talking about the reprap community, from my observations
05:14 PM dlarue: isn't that mostly what communities are for? Online communities? They usually have a #random channel for odds/ends but the topic is usually on existing direction.
05:15 PM CaptHindsight[m]: the Chinese SLS/mLSA printer vendors are just making a buck off the same market as reprap
05:16 PM CaptHindsight[m]: their printers can't print resins that act like useable thermoplastics or that may be used as molds to injection mold them
05:16 PM dlarue: I don't see RepRap going out too far from what's already being done except to publish posts of what others have done. Duet, Smoothie, etc are just side bar posts.
05:21 PM CaptHindsight[m]: reprap started with someone that saw that a patent expired, and made an open source version
05:21 PM dlarue: ya ya, they are garbage, shouldn't exist, blah blah. they do, they work good enough and eventually will have enough capabilities using LinuxCNC will be of no value.
05:22 PM CaptHindsight[m]: then the nonsense about revolutionizing manufacturing took over
05:22 PM CaptHindsight[m]: if it was about revolutionizing manufacturing they would have moved on to materials and other tech
05:22 PM dlarue: who cares, cool shit is being done by lots of people around the world who would not have had ANY exposure to CNC machines...
05:22 PM CaptHindsight[m]: metal printing, SLS etc
05:25 PM dlarue: A guy printed blood vessels for burn victim synthetic skin because he could hack a RepRap 3D printer to do it and show it's viable. piss on RepRap all you want, I run into mom's at elementary schools who have no clue what 3D pringint is but their kid is into robotics now because she bought one for home.
05:26 PM CaptHindsight[m]: "brought one from home", thank you schools
05:30 PM CaptHindsight[m]: sorry "bought one for home"
05:44 PM dlarue: FYI, there's a woodworking group with like 100 members all in their 70+ who make amazing things but until 3 years ago knew nothing about digital tools. A friend got them to sell the huge CNC router so he could bring a 3D printer and a Shapeoko and start teaching them about them.
05:45 PM dlarue: nobody was using the large CNC which was running Mach something.
05:46 PM dlarue: Now, they have brought in a few hundred more members, they now have 2 Prusa 3D printers, 2 Shapeoko XXL's and 2 Chinesium 60W laser cutters and most all are booked by members constantly.
05:47 PM dlarue: All because of RepRap creating a low end machine which got used for other things and made stepper motors cheaper, etc etc.
05:48 PM CaptHindsight[m]: I look forward to my new wooden mRNA synthesizers and DNA sequencers for only $99.95
05:48 PM dlarue: Sure there were CNC machinists all over the world but they could not go to the coffee shop and find a group of people talking about CNC machining.... It's possible now and IMO this is because of RepRep.
05:49 PM dlarue: Sure you don't want to change your handle to CaptSarcastic?
05:50 PM CaptHindsight[m]: yeah it's a shortage of critical thinking
05:51 PM CaptHindsight[m]: did that group try facebook?
05:59 PM * JT-Shop needs to come up with a simple way to strip copper wire insulation
06:00 PM CloudEvil: JT-Shop: Ball mill under liquid nitrogen.
06:01 PM JT-Shop: CloudEvil, must have missed the word simple
06:01 PM CloudEvil: it is simple if you have liquid nitrogen
06:01 PM JT-Shop: I don't have liquid nitrogen...
06:02 PM JT-Shop: I don't have a ball mill either
06:02 PM dlarue: mount a utility blade in the crotch of a V and pull it through?
06:02 PM JT-Shop: I've never stayed at a Holiday Inn Express either LOL
06:03 PM JT-Shop: I did that but keeping the wire in the center is problematic
06:03 PM JT-Shop: either a roller cutter or spring loaded blade with some side guides and a bearing under...
06:04 PM JT-Shop: a roller cutter like a copper tube cutter might work if you can keep the wire in the center
06:05 PM JT-Shop: 90% of the wire I need to scrap is stranded...
06:05 PM Tom_L: put it in a barrel and set fire to it... hell with the environ..
06:06 PM JT-Shop: lol I tried that once and it burned up the copper and turned it an ugly color
06:06 PM Tom_L: hah
06:07 PM JT-Shop: I have a huge pile of wire from hospital equipment I need to scrap while the price of copper is insane
06:16 PM Tom_L: well the price of lumber will just offset that
06:17 PM JT-Shop: I'm not buying any lumber for a while
06:19 PM JT-Shop: crap I can install my g code program on this pc I need python => 3.6
06:19 PM JT-Shop: and I have 3.5...
06:20 PM JT-Shop: I guess I need to install debian 10...
06:48 PM roycroft: we're well past peak copper - the price is going to stay high forever
06:51 PM dlarue: why not install python 3.6 from source instead of an OS upgrade? https://www.rosehosting.com/blog/how-to-install-python-3-6-4-on-debian-9/
06:59 PM roycroft: because this is not the 1980s, and people generally have better things to do than maintain custom installations of utility software?
07:02 PM * roycroft found something very useful today at harbor freight
07:02 PM roycroft: https://harborfreight.com/search?q=poly%20coated%20drop%20cloth
07:03 PM roycroft: usually when i'm applying finish i cover the bench/table/whatever with plastic to protect it, then toss a canvas drop cloth over the plastic to soak up any spills
07:03 PM roycroft: i went to get another canvas drop cloth and found that combo product
07:04 PM roycroft: i'm about to go get another one, actually
07:04 PM roycroft: i should have bought a couple or three the first time, but i wanted to make sure it would work out well first, and it did
07:12 PM CloudEvil: May not wash well
07:22 PM CaptHindsight[m]: after use, neatly fold drop into a small square, toss into forest fire
07:24 PM CaptHindsight[m]: CloudEvil: if you don't have any liquid nitrogen laying around what can I do with the large mass of it floating around me?
07:24 PM CloudEvil: Just chill.
07:25 PM CaptHindsight[m]: too much moisture jn it today
07:26 PM CaptHindsight[m]: blockchain nitrogen
08:21 PM roycroft: uh oh
08:21 PM roycroft: abom has turned to the dark side
08:22 PM roycroft: he went to a cnc training
08:22 PM XXCoder: who?
08:22 PM roycroft: abom79
08:23 PM roycroft: i wonder if he's going to cnc his shapers now
08:27 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/pillowblock/pillowblock1.jpg
08:27 PM Tom_L: concept
08:29 PM roycroft: looks like a pillowblock to me
08:29 PM roycroft: so i call it a success
08:29 PM Tom_L: http://ruemohr.org/~ircjunk/tempimage/p1190990.jpg
08:29 PM Tom_L: part
08:29 PM Tom_L: not bad for homebrew casting
08:30 PM Tom_L: not me, rue_mohr in Ca
08:31 PM dlarue: Is spindle.0.at-speed supposed to be TRUE or is it possible this is why my G91 moves with spindle changes is running really slow?
08:31 PM Tom_L: i used the near component for at speed
08:32 PM Tom_L: try that
08:33 PM dlarue: noob here... trying to use LCNC for laser cutting with spindle S command doing laser power modulation. Problem is when rasterign at 254DPI every move is .1mm and has an Sxxx command which is majorly slowing motion.
08:34 PM Tom_L: i know, i've been lurking
08:34 PM dlarue: just found where if at-speed is true it then causes the motion to wait.
08:35 PM Tom_L: set the spindle speed inputs to agree if within 80%
08:35 PM Tom_L: setp near.0.scale 1.40
08:35 PM Tom_L: net spindle-velocity hm2_[HOSTMOT2](BOARD).0.encoder.01.velocity => near.0.in2 scale.0.in spindle.0.speed-in
08:35 PM Tom_L: net spindle-cmd-rps spindle.0.speed-out-rps near.0.in1
08:36 PM Tom_L: been a while since i did that but you can read up on it
08:38 PM dlarue: but I don't have any encoder and no spindle.... just wondering what's going to agree without 80%.
08:38 PM Tom_L: you can set the scale to whatever suits
08:38 PM Tom_L: hmm true
08:38 PM Tom_L: maybe use the M code thing as CaptHindsight[m] suggested
08:40 PM dlarue: ya, I could use M106 as that's what is output by default in the laser CAM software for LinuxCNC but that would call a python script for every line of gcode and every move is .1mm so it'd be thousands for even a small rastered image.
08:42 PM dlarue: if there is no way to get the motion to boogie with spindle Sxxx changes I'll look elsewhere. Maybe that M68 command...
08:43 PM dlarue: I thought I'd accomplished something getting to seeing the right PWM on the physical pin with M3 Sxx.xx but close but no cigar it seems.
08:44 PM dlarue: will keep digging.
09:07 PM dlarue: tried faking it out and setting near in2 to the same input but no go - net spindle-cmd => near.0.in2
10:24 PM snakedLX is now known as snaked