#linuxcnc Logs

Jun 16 2023

12:17 AM roycroft: a couple just became the third and fourth deaf people to successfully ascend mt everest
12:27 AM roycroft: and on their way up they passed sherpa coming down who is the second deaf person to reach the peak
12:27 AM XXCoder: nice
12:56 AM EdMonster[m] is now known as edmonster0[m]
01:28 AM SIAS[m] is now known as tsias0[m]
01:54 AM Eric-dg[m] is now known as ericdg0[m]
02:21 AM Deejay: moin
02:50 AM fletch[m] is now known as stutchbury0[m]
03:10 AM Stav[m] is now known as stav27230[m]
03:48 AM travis_farmer[m4: Morning ☕️
03:55 AM miss0r: mornin
04:07 AM travis_farmer[m4: Hmmm, just remembered, the 12V bus on my machine is driven by a camper power converter/charger, and puts out 13-14V. everything else on the 12v bus is fine with it, but my laser i think wants regulated 12V @ 6.6A... that may be an issue.
04:44 AM Tom_L: morning
04:47 AM JT-Cave: morning
05:38 AM JT-Cave: rooster just crowed
05:40 AM * TheMightyFozz[m4 uploaded an image: (1777KiB) < https://libera.ems.host/_matrix/media/v3/download/matrix.org/gkCNTDElPBsnGtiuTbxDLRGp/Screenshot%20from%202023-06-16%2010-34-58.png >
05:40 AM TheMightyFozz[m4: I am in the UK and looking for decent ball cone bits to 3d carve with. preferably a cheap but good amazon brand please.
05:44 AM TheMightyFozz[m4: I have done a few 3d carvings with a 3mmx12mm-ish ballnose Trend bit. I would like to use a longer bit if possible.
05:51 AM JT-Cave: hmm cheap OR good... good OR amazon... I can't seem to find a cheap AND good AND amazon
05:54 AM XXCoder: best can go is "eh its ok"
06:26 AM Deejay: re
07:12 AM Tuggers[m] is now known as tuggers_0[m]
08:05 AM * JT-Cave starts his chicken day
08:09 AM javabean_ is now known as JavaBean
08:42 AM Tom_L: JT-Cave, how do you go about deleting an axis?
08:47 AM JT-Shop: https://pasteboard.co/xeakvEZhlVlV.png
08:47 AM Tom_L: ahh ok
08:47 AM Tom_L: i was readin that but hadn't got that far :)
08:53 AM travis_farmer[m4: up until it got too hot in the shop... i was trying to figure out how to mount my laser to my Z axis. i wasn't having much luck, but i think if i figure out a temporary mount, i can mount it in front of the spindle, somehow. though this will be in the way of tool changes, so i need to also make it removable, yet position-stable when re-mounted... i may have to design something up, then find somebody that can mill aluminum to make it
08:53 AM travis_farmer[m4: anticipate it being so complicated...
08:56 AM Tom_L: JT-Shop, do the gantry dual axis need to be consecutive?
08:56 AM Tom_L: i've never messed with gantry
08:57 AM JT-Shop: Tom_L, I'm not sure... I assumed the joints would be consecutive... dunno what happens when the joints are not consecutive
08:57 AM Tom_L: me either but i did one up that way with no errors
08:58 AM Tom_L: if they have to be consecutive you may wanna check for 2 axis letters
08:59 AM Tom_L: or multiple
08:59 AM JT-Shop: aye, I need to add that to checks... working on checks now
09:00 AM * JT-Shop goes to ship some Mesa cards
09:01 AM Tom_L: For the common trivkins kinematics, joint numbers are assigned in sequence according to the trivkins parameter
09:01 AM Tom_L: so it looks like they do need to be consecutive
09:01 AM Tom_L: It is permitted to write an axis name more than once (e.g., X Y Y Z for a gantry machine).
09:02 AM -!- #linuxcnc mode set to +v by ChanServ
09:02 AM Tom_dev: mine saved as: KINEMATICS = trivkins coordinates=XYZY kinstype=BOTH
09:09 AM JT-Cave: I wonder if it works like that :)
09:09 AM Tom_L: no idea
09:09 AM Tom_L: it doesn't say you can't but it shows them together
09:10 AM JT-Cave: I'll add that check
09:10 AM Tom_L: didn't look in the kins section
09:11 AM JT-Cave: gotta run
09:11 AM Tom_L: that was one reason for copying the previous axis
09:11 AM Tom_L: i eventually would copy all the data over
09:12 AM Tom_L: pid, stepper timing etc
09:14 AM JT-Shop: yup gotta add that
09:15 AM Tom_L: maybe check the dual axis when the next letter is selected instead of at build time
09:16 AM Tom_L: save re'entering all the stuff
09:53 AM roycroft: jt-shop: did you see my note from yesterday evening about lightburn?
09:55 AM Tom_L: ever had a sata buss go bad on a pc?
09:59 AM perry_j1987: had a port go bad not the whole line
10:01 AM Tom_L: when multiple ssd connected i get errors on one even after moving things around
10:01 AM Tom_L: by itself it's fine
10:04 AM JT-Shop: roycroft, no
10:06 AM Tom_L: got a new mb on the way to fix the sata
10:06 AM Tom_L: borrowed one for now
10:06 AM Tom_L: spare
10:11 AM roycroft: jt-shop: it was a remark regarding the test cards you're making
10:11 AM roycroft: be aware that lightburn has several fill methods for raster images - dither, halftone, greyscale, newsprint, etc.
10:12 AM roycroft: you might experiment with them to see what works best for you, but you probably don't need to make a full test card for each method
10:13 AM JT-Cave: ok thanks
10:46 AM yaqwsx: Hi guys. What is the current state-of-the-art with real-time Linux? I know that a few years ago there was RTAI, Preempt-RT, and Xenomai. What projects are alive? What's new? I am not only interested in LinuxCNC, I am interested about real-time on Linux in general and I thought you might have a clue.
10:47 AM Tom_L: probably bookworm with preempt-rt
10:47 AM Tom_L: with maybe a 6.xx kernel
10:48 AM JT-Cave: I "think" there been some work on RTAI but Preempt-RT seems to be main stream now
10:48 AM Tom_L: i _think_ you have to build the RTAI one
10:48 AM JT-Cave: yeah, I'm not sure either
10:48 AM Tom_L: https://github.com/NTULINUX/RTAI/blob/master/README.INSTALL
10:49 AM Tom_L: and you may have to build any 6.xx preempt-rt kernel, i'm not sure on that one
10:49 AM Tom_L: since they're new
10:51 AM Tom_L: wow, that mb says it'll be here tomorrow
10:51 AM Tom_L: didn't expect that
10:52 AM JT-Shop: that's fast
10:52 AM JT-Shop: wow it's almost lunch minute
10:52 AM Tom_L: jup
10:52 AM Tom_L: post office first
10:52 AM * travis_farmer[m4 just had lunch :-)
10:52 AM Tom_L: finally used that new app i got and seems to work as expected
10:52 AM Tom_L: kindof a first anymore
10:55 AM JT-Shop: roycroft, https://www.o2creative.co.nz/laser/lightburn_engrave_image_power_generator.php
10:55 AM JT-Shop: interesting
11:03 AM JT-Shop: lunch time
11:17 AM roycroft: that's cool, jt-shop
11:17 AM roycroft: it would be interesting to generate a test card with the same image and power/speed settings, using each of the raster methods
11:25 AM Unterhausen: I thought I saw some hints that rtai could be used with ethernet mesa cards. Would be nice because I have some comps that work a lot better with rtai
11:31 AM CaptHindsight[m]: Unterhausen: just the non ethernet cards for now
11:32 AM Unterhausen: I know it would require work, the question is if it's even possible
11:33 AM CaptHindsight[m]: RTAI would have to add support for RTnet again for this to work if I recall correctly
12:08 PM CaptHindsight[m]: i forget how many lines of cleanup Alec did to RTAI a few years ago, well over 100k lines
12:08 PM CaptHindsight[m]: he pulled out the broken RTnet at the same time
12:10 PM CaptHindsight[m]: he has built a LinuxCNC installer for Gentoo, it does everything from format the drive to build all the apps...
12:10 PM CaptHindsight[m]: but something LCNC has broken with Clang
12:10 PM CaptHindsight[m]: it builds preemp_rt kernels
12:11 PM CaptHindsight[m]: I don't know if he will ever work on an RTAI version or add RTnet back in again
12:23 PM * travis_farmer[m4 is getting a T-storm right now...
12:47 PM jdh: We could use one of those
12:50 PM roycroft: we have a chance of thunderstorms in our forecast for early next week
12:50 PM roycroft: most unusual west of the mountains
12:50 PM roycroft: we get a thunderstorm every 2-3 years, on average
01:10 PM roycroft: it looks like there may very well be a ups strike starting august 1st
01:10 PM roycroft: so buy all the toys you need for a while now
01:24 PM Tom_L: aparently it rained here overnite
02:05 PM Nathaniel[m] is now known as nathanielxyz0[m]
02:11 PM XXCoder: roycroft: fun. we desperately need more main
02:44 PM youhouka[m]: I'm finding conflicting information on whether I can do tool touch off with manual tool change in some way
02:44 PM youhouka[m]: is there an easy answer? Maybe I'm using bad search terms
03:00 PM youhouka[m]: Ah, I found this which might be the work I need to follow: https://forum.linuxcnc.org/show-your-stuff/41321-m6-tool-change-remapping-with-tool-length-measurement
03:03 PM youhouka[m]: dang, G53 can't work with G38*
03:04 PM Tom_L: what about G28
03:08 PM youhouka[m]: I'm trying to specify the end point of the probe move, not actually move my spindle
03:08 PM youhouka[m]: I don't think G28 can help me on that, can it?
03:10 PM W1N9Zr0: use G53 to move to tool setter location, then use G91 to switch to relative mode for probing
03:21 PM Tom_L: https://forum.linuxcnc.org/12-milling/33990-touch-off-after-manual-tool-change
03:37 PM JT-Shop: going to be an early departure tomorrow
03:37 PM JT-Shop: wife drove the C8 today... she's loving it
03:39 PM Tom_L: careful you may end up with 2
03:41 PM JT-Shop: no room
03:43 PM XXCoder: time for c8 only garage
03:43 PM JT-Shop: one is enough for sure
03:44 PM XXCoder: what no jay leno garage? ;)
03:44 PM JT-Shop: I'm not jay leno...
03:45 PM XXCoder: last I read about leno is that he got burnt by a fire something
03:45 PM XXCoder: wonder if hes ok
03:45 PM JT-Shop: ouch
03:46 PM Unterhausen: my birthday shows up 28 times in the first 200 million digits of pi.
03:46 PM JT-Shop: month/day/year or day/month/year
03:46 PM Unterhausen: month day year
03:47 PM XXCoder: his 1907 steam car, he was working on fuel line when it combusted into flames and burnt his face
03:47 PM Unterhausen: day month year only shows up 15 times
03:48 PM Unterhausen: well, at least it didn't burn anything important
03:48 PM JT-Shop: I saw a video of jay driving that car
03:51 PM XXCoder: its nice to preserve cars history
03:51 PM JT-Shop: yup
03:51 PM XXCoder: not many can afford money and space requirements
04:05 PM JT-Shop: yup jay has quite a collection and a staff to take care of them
04:18 PM * JT-Shop goes to make some chicken crack
04:19 PM XXCoder: jt the drug dealer is in!
04:19 PM XXCoder: ;)
04:34 PM JT-Shop: last year my daughter sent the chickens a bag of chicken crack which was mostly dried mealworms, sunflower seeds, sunflower hearts and chips so I make my own each day
04:35 PM Tom_L: spoiled things for sure
04:52 PM roycroft: a while back i gave my cat some tuna two nights in a row for the first time
04:52 PM roycroft: now i have to feed her tuna every night
05:01 PM JT-Shop: sounds as bad as my hens but they don't beg
05:02 PM roycroft: my cat doesn't beg
05:02 PM roycroft: she scratches and bites
05:09 PM JT-Shop: well the hens will complain if they can't get to "their" treats and every hen thinks all treats are "theirs"
05:09 PM roycroft: yes, hens are not good sharers
05:09 PM roycroft: i've been around enough of them to know that
05:10 PM roycroft: it's the weekend! (almost)
05:10 PM roycroft: it's after 3, but i want to get an os install finished before i knock off
05:10 PM roycroft: which will take another 10 minutes
05:18 PM drmacro[m] is now known as drmacro0[m]
05:19 PM roycroft: all done
05:45 PM oneohm[m] is now known as one_ohm0[m]
05:52 PM * JT-Shop takes 5 before doing the sills and wheels
06:16 PM roycroft: well, auto z-touch does not work
06:16 PM roycroft: so maybe my origin wasn't refurbished as thoroughly as i thought
06:16 PM roycroft: i can touch off manually, and i've done some air cuts, but for what i paid for it, auto z-touch ought to work
06:17 PM JT-Shop: yup
06:18 PM XXCoder: interesting. id ask them see what they say
06:18 PM roycroft: i've sent them an email with a video
06:21 PM roycroft: for any of you who might be interested, and can view my quaint file format: https://roycroft.us/ztouch.mov
06:21 PM * JT-Shop buttons up for the night, got an early long day tomorrow
06:21 PM roycroft: it lifts the origin significantly, and at an angle
06:21 PM roycroft: that doesn't look right to me
06:21 PM XXCoder: interesting
06:22 PM roycroft: i think the z-touch sensor pad is not working
06:22 PM JT-Shop: hard to see what is going on...
06:22 PM roycroft: and it's reaching a limit
06:22 PM XXCoder: it moved whole device a little too
06:22 PM roycroft: yes
06:22 PM roycroft: there is a sensor pad on the base
06:22 PM roycroft: the way it works, it lowers the spindle until the cutter touches the surface
06:22 PM roycroft: and as it continues to lower it, the base is lifted up
06:22 PM roycroft: the sensor is supposed to detect that immediately
06:22 PM roycroft: but apparently it's not
06:23 PM roycroft: it needs to see some shaper tape to work, too
06:23 PM roycroft: so there is probably some visual feedback as part of the process
06:23 PM roycroft: and it won't even attempt to touch off if it can't see shaper tape, so i know it sees the tape just fine
06:57 PM roycroft: they got back to me already and asked for a picture of the base
06:57 PM roycroft: pretty good service for the end of the day on a friday
06:57 PM XXCoder: yah
07:58 PM Rowow[m] is now known as rowow0[m]
09:09 PM roycroft: so touching off z accurately is really important with the shaper origin at all times, because when you do an air cut it raises the cutter 0.005" above the workpiece
09:09 PM roycroft: which is plenty, if z is calibrated
09:09 PM roycroft: but not so much if it's not
09:30 PM sqishi[m] is now known as sqishi0[m]
10:51 PM DavidS[m] is now known as davids_si0[m]
11:29 PM roycroft: by not showing the bad stuff on video? :)
11:29 PM XXCoder: I always use tap oil.
11:29 PM roycroft: yeah, but even so, it's bad for me
11:29 PM XXCoder: I still have small tap oil bottle from when I worked
11:29 PM roycroft: and yes, because of that, i don't run taps dry
11:29 PM Tom_L: me either
11:29 PM XXCoder: it probably wll last infinity years now lol
11:29 PM roycroft: except occasionally in cast iron, since it's self-lubricating
11:30 PM roycroft: i like the hand-crank myford
11:30 PM Tom_L: i'd like to see someone do a homebrew thread roller
11:30 PM Tom_L: those threads are stronger
11:30 PM XXCoder: isnt that hard to do since you need extremely hard metal rollers
11:30 PM Tom_L: uh huh
11:31 PM Tom_L: i've probably rolled millions of them
11:31 PM Tom_L: 5500 a shift
11:31 PM XXCoder: I know exactly how many times I rolled a thread
11:31 PM XXCoder: its zero
11:31 PM * roycroft wonders if brass is really cheap in berlin, because of leftover shell casings from the war
11:32 PM Tom_L: the one i mainly used was a double roller timed roller set for that particular thread
11:32 PM roycroft: or is uri secretly wealthy?
11:32 PM Tom_L: there are single roller bump threads too
11:32 PM XXCoder: okay thats uh risky milling lol
11:32 PM Tom_L: i get brass cutoff from the scrap once in a while but still..
11:33 PM Tom_L: i have a few chunks of 1" from a previous life
11:33 PM roycroft: i never heard back from shaper after i sent them the picture of the base, but i sent it at 4:57, so i don't expect to hear until monday
11:33 PM Tom_L: too short to feed thru the 6 spindle
11:33 PM roycroft: but i suspect they're going to send me a new machine
11:33 PM XXCoder: only stock I bought was tiny brass rods, and 4 alum blocks. 2 of em cut down by me into stock I was planning to turn into cnc adoptor plates
11:33 PM XXCoder: never did do that
11:34 PM Tom_L: we turned hex and round
11:34 PM Tom_L: most of the hex was used for barb fittings
11:34 PM roycroft: i have a little bit of brass hex bar and round bar
11:34 PM roycroft: and some brass sheet
11:34 PM roycroft: but very little
11:35 PM Tom_L: https://www.oldcolemanparts.com/Check-Valve-With-Stem-C1.html
11:35 PM Tom_L: damn those have changed alot since i made em
11:35 PM Tom_L: but that's a rolled thread
11:36 PM Tom_L: https://i.ebayimg.com/images/g/bGIAAOSwaUtkKyW2/s-l1600.jpg
11:36 PM Tom_L: the machine did it all except wedge the end
11:37 PM Tom_L: a pickoff attachment grabbed it and cut the screwdriver slot
11:37 PM XXCoder: first attempt didnt go great. probably due to grooves. id use no groove type if theres such thing
11:38 PM Tom_L: internal thread was tapped on the 2nd op too
11:39 PM XXCoder: wonder if there was a way to make part to be made into hobbed part sync in rotation with spindle
11:40 PM Tom_L: on a mill with a rotary yes
11:40 PM Tom_L: andy's done that
11:41 PM XXCoder: its proper to make it work correct? im picturing it in mind but yeah
11:41 PM Tom_L: with a hob cutter
11:42 PM Tom_L: https://www.youtube.com/watch?v=ZhICrb0Tbn4&pp=ygURYW5keSBwdWdoIGhvYmJpbmc%3D
11:43 PM Tom_L: https://www.youtube.com/watch?v=xdE46yvckbM&pp=ygURYW5keSBwdWdoIGhvYmJpbmc%3D
11:43 PM Tom_L: he's done more than one
11:46 PM XXCoder: wow first link is unwatchable for me. too low fps makes me dizzy
11:47 PM XXCoder: second one hmm seems rotatary is rotating at half speed?
11:50 PM XXCoder: ah sync is in tpi vs rod roation
11:50 PM Tom_L: it uses synchronized motion with the axis
11:50 PM Tom_L: spindle & A axis
11:51 PM Tom_L: same goes for rigid tapping only a different axis
11:52 PM Tom_L: G33 i think
11:52 PM Tom_L: G33.1
11:55 PM Tom_L: so for a 20 tpi thread you'd move .050 per rev