#linuxcnc Logs

May 24 2021

#linuxcnc Calendar

01:44 AM Deejay: moin
02:00 AM veegee: roycroft yeah this is what I was looking to get: https://bison-america.com/produkt-26407-3565.html
02:02 AM veegee: Either the 3 jaw or 6 jaw
02:03 AM veegee: drdoc I doubt it. The likely answer is I might have mounted it improperly. I can't imagine there's anything wrong with the chuck. It was still in its original packaging with the thin film of corrosion inhibitor fluid still on it. I don't think anyone touched the chuck
02:05 AM veegee: roycroft they're not _that_ expensive. And dialing in the adjustment is equivalent to dialing in a 4 jaw chuck but you only have to do it once. It compensates for wear on the scroll. I've heard good things about their repeatability.
02:06 AM veegee: The only thing wrong with my 3 jaw chuck is the replaceable jaws have wear. The scroll itself looks fine. A set of replacement jaws should be cheap
02:08 AM veegee: If I had a surface grinder, I would just grind the faces down. Or grind them on the lathe itself. I just need to make some kind of toolpost grinder attachment for my straight die grinder
03:10 AM mrec_: hmm I'm having some issues with configuring the C axis
03:10 AM mrec_: the motor has 200 steps, microstepping is configured to 2
03:10 AM mrec_: pullez motor:leadscrew 20:60
03:11 AM mrec_: 1 rev = 5 degree
03:11 AM mrec_: so if I run test this axis in stepconf and set a testarea of 90 degree I'm getting 180 degree
03:11 AM mrec_: aaah
03:12 AM mrec_: it's all ok
03:13 AM mrec_: I just missed the - in +/-
03:13 AM mrec_: so it's indeed 180 deg
04:24 AM Tom_L: morning
06:53 AM jthornton: morning
06:54 AM XXCoder: yo
11:00 AM mrec_: is it possible to get the commanded position of a rotary axis somehow in the source?
11:01 AM mrec_: https://tinyurl.com/mzvbeyv4
11:02 AM mrec_: I have this tool, but it's a bit annoying that the commanded position cannot be seen
11:02 AM mrec_: I think it would be useful to print the commanded position on the handwheel for a few seconds and then switch to the actual position
11:05 AM roycroft: most folks set the step rate to 10x or 100x and rapid close to where they want to go, then set it back to 1x to move to final position
11:09 AM mrec_: my rotary table can only go 5°/sec
11:09 AM mrec_: A axis is better, but has a much bigger stepper too
11:10 AM -!- #linuxcnc mode set to +v by ChanServ
11:10 AM mrec_: The C axis is slow 1:3 + 1 rotation is 5 degree
11:11 AM mrec_: I just picked whatever they had in the electronic store, and the motor is small fits nicely to the small rotary table
11:11 AM roycroft: after you use the pendant for a while you'll have a good sense of how far you'll move with a turn of the handwheel
11:11 AM mrec_: ya but setting 90 / 180 deg is a bit difficult
11:11 AM mrec_: 180 = 36 sec :-)
11:12 AM roycroft: well don't use the jog wheel to do that - do it in linuxcnc
11:12 AM roycroft: so you can set it and forget it, and know when the noise stops it's in position
01:33 PM CaptHindsight: have to try setting the gamepad or racing wheel up for milling
01:33 PM CaptHindsight: accelerator is feed rate, steer in the direction you want to cut
01:34 PM CaptHindsight: a flight stick might be better so that you can easily control depth of cut
02:06 PM roycroft: when is linuxcnc going to be ported to the new macs with the m1 chip? :)
02:07 PM * roycroft suspects the answer is "as soon as you do it"
02:07 PM Tom_L: soon as you get busy doing it
02:07 PM Tom_L: :)
02:10 PM _methods: this is the way
02:21 PM CaptHindsight: force feedback flight stick instead of a MPG, senses feed and plunge resistance
02:22 PM CaptHindsight: linuxCNC will run on Risc-V before the Apple M1
02:25 PM CaptHindsight: http://linuxgizmos.com/files/allwinner_d1_detail.jpg if the integrated DSP has access to the GPIO pins this might be another all in one stepper out SOC
03:06 PM rs[m]: CaptHindsight: i2c may be too slow for that (on the pi fan cool hat)
03:33 PM Tom_L: SPI
03:34 PM rs[m]: the hat from linuxgizmos is connected via i2c
03:34 PM Tom_L: shame
03:40 PM CaptHindsight: rs[m]: just use SPI vs i2c
03:41 PM CaptHindsight: looks like they chose some super low pin count stm32 anyway
03:42 PM CaptHindsight: _methods: was looking into cam grinding, the cam suppliers seem to only want to start with blanks that are already more than half way there vs a round bar
03:44 PM rs[m]: CaptHindsight: what should such a board include? TTL stepper dir/step outputs? differential? one 0-10V for a VFD? and a parallel-port compatible 25pin for I/O BOBs?
03:45 PM CaptHindsight: rs[m]: and encoder inputs to round it all off
03:46 PM rs[m]: how many?
03:46 PM CaptHindsight: why bother having an extra BOB
03:47 PM rs[m]: that sounds a bit like the spec of the mesa 7c80
03:47 PM CaptHindsight: it depends on if you want it to plug into other systems already in place that use a 25-pin LPT type connector
03:47 PM rs[m]: what is wrong with that?
03:48 PM CaptHindsight: this would be for Rpi fans
03:48 PM CaptHindsight: so I'd say price and reliability and open source
03:49 PM rs[m]: firmware of 7c80 is "open source" as far as i know
03:49 PM rs[m]: even GPL i think
03:49 PM CaptHindsight: Rpi fans just want cheap, reliability and open source are way off their focus
03:49 PM CaptHindsight: sure the mesa is reliable and open source, not a main interest of the Rpi fans
03:50 PM rs[m]: seems i misunderstood this "discussion"
03:50 PM Tom_L: capn just has this thing about rpi :)
03:51 PM rs[m]: rpi makes a nice small self contained system that is easy to tinker with
03:51 PM CaptHindsight: just different mind sets/markets
03:51 PM CaptHindsight: like the smoothieboards
03:52 PM CaptHindsight: big following and it's not even low cost, except for the Chinese clones
03:52 PM rs[m]: want to try a new distribution/os/linuxcnc version? no big deal, swap SD card
03:52 PM Tom_L: isn't that what _unreal_ had?
03:52 PM Tom_L: he was struggling with drivers or something
03:52 PM CaptHindsight: don't know, been too long since I followed any of his banter
03:53 PM Tom_L: rs[m], i already do that with ssd
03:53 PM Tom_L: good point capn
03:53 PM rs[m]: spare SD cards are 50cent/gigabyte
03:53 PM Tom_L: yeah
03:54 PM rs[m]: i mean, the rpi has its place, and you can build useful CNC controllers with a pi
03:55 PM CaptHindsight: 1GB+ Opi
03:56 PM CaptHindsight: with integrated micro
03:56 PM CaptHindsight: for the cheapie low end of the spectrum
03:56 PM CaptHindsight: build that with IO connectors and sell for the same price range as the Smoothie
03:59 PM CaptHindsight: SmoothieII is supposedly to have LPC4330 and a FPGA
03:59 PM rs[m]: unreals problems were not with hardware or software but more of the kind that linuxcnc is not mach3
03:59 PM roycroft: thank goodness for that
04:00 PM roycroft: well, thank the emc/linuxcnc developers for that
04:00 PM CaptHindsight: I'd say more so something a professional should help diagnose and treat
04:01 PM Tom_L: i did finally update the mill (wheezy) to 2.8.1 yesterday
04:01 PM Tom_L: no big issues
04:01 PM Tom_L: i'd already had the configs converted when i was messin with it on the rpi
04:02 PM Tom_L: a few name changes
04:02 PM Tom_L: a few name changes the conversion tool missed
04:05 PM Tom_L: motion.x.spindle stuff mostly
04:06 PM Tom_L: oh, it's not called motion.spindle now rather just spindle.x.xxx
04:07 PM Tom_L: under the motion comp
04:07 PM rs[m]: for the really cheap rpi stepper users, all you need is a bunch of powerstep01 modules like this https://www.st.com/en/ecosystems/x-nucleo-ihm03a1.html and some wires to connect to the pi
04:08 PM rs[m]: and of course a driver
04:14 PM CaptHindsight: Allwinner D1 (RISC-V) boards are supposed to start at $12ea
04:15 PM CaptHindsight: D1 + sockets for stepper modules on a board that you give away with some cereal in a box for $25
04:16 PM XXCoder: can always go BOB and tb6600s
04:16 PM XXCoder: if tb6600s is still being sold
04:16 PM CaptHindsight: but then you need to have a way to run Marlin
04:16 PM rs[m]: powerstep has step generator included
04:18 PM CaptHindsight: just needs a GUI that looks like printrun and has the temp sensors
04:20 PM CaptHindsight: call the stepper modules something other than expansion IO or stepper modules...
04:21 PM CaptHindsight: something out of a comic book
04:24 PM Tom_L: isn't that what sells?
04:24 PM CaptHindsight: of course
04:25 PM Tom_L: you could sell polished turds if the marketing was right
04:25 PM CaptHindsight: don't mention a word about LCNC being inside it
04:26 PM Tom_L: oh god no
04:26 PM CaptHindsight: turdletts was one idea for the stepper modules
04:27 PM CaptHindsight: Bobbie Joe's machine brain
04:32 PM _unreal_: Tom_L, ?
04:33 PM CaptHindsight: also cloud based and keeps track of your browsing habits
04:33 PM Tom_L: and fb comments
04:33 PM CaptHindsight: LCNC come pre-installed, you just need to connect to the cloud so your subscription is up to date
04:33 PM _unreal_: been home for about an hour, been stufing my face with mangos
04:34 PM _unreal_: mango season in florida
04:34 PM _unreal_: got 3 tree's in the back yard
04:34 PM _unreal_: ya....... 10 is my limit
04:52 PM jthornton: yo
04:52 PM Tom_L: evening
04:53 PM Tom_L: where'd you land today?
04:53 PM jthornton: Horn Lake MS
04:53 PM Tom_L: just headin out the door, bak in a few
04:53 PM jthornton: k
05:06 PM * jthornton heads to linux
05:14 PM jthornton: we were driving up I55 about 40 miles from Jackson with the cruse set on 80 and this shiny black pretty new camaro passes doing about 90 with a couple of other vehicles behind.
05:15 PM jthornton: I bump up the cruse to 90 and fall in and the black ford pickup that had my back door for the last 30 miles fell in.
05:15 PM jthornton: I kept the camaro in sight for about 15-20 miles, during this time a few more joined our caravan.
05:16 PM jthornton: after I lost sight of the camaro we stayed at 90 until we were close to jackson then traffic made us slow down to 80 again.
05:17 PM jthornton: on the outskirts of jackson the traffic backed up and I could see a couple of cop cars with blue lights flashing...
05:17 PM jthornton: when we got to the wreck the camaro rear ended a single axle delivery truck
05:18 PM jthornton: the grill, left half of the hood, left fender and left door were gone
05:18 PM jthornton: I saw someone laying down in the grass with someone talking to them but no ambulance yet
05:19 PM jthornton: the amazing thing is the two tow trucks had already loaded the delivery truck when we passed
05:20 PM jthornton: the ambulance and fire truck were in the southbound lane when we passed
05:25 PM Tom_L: bak
05:26 PM Tom_L: jthornton, do you get those little 'cop' notifications on your phone as you go?
05:26 PM jthornton: no
05:27 PM jthornton: I turn all notifications off that I can
05:27 PM Tom_L: on google maps, ppl can notify
05:27 PM Tom_L: it's rather handy while traveling
05:27 PM jthornton: notify you a speed trap is ahead?
05:28 PM Tom_L: just 90? pfft
05:28 PM Tom_L: yessir
05:28 PM jthornton: well it's not the Corvette
05:28 PM Tom_L: and ppl can verify or deny they're still there
05:29 PM jthornton: I burned 9 gallons from Hammond La to Horn Lake MS 327 miles
05:29 PM Tom_L: last couple times south we've had to watch it a bit more
05:30 PM jthornton: that's still 36 miles to the gallon but the tank was dry when we got here
05:30 PM Tom_L: we've seen em sitting in mall parking lots in towns shooting the highway
05:30 PM Tom_L: heh
05:30 PM Tom_L: pretty good
05:30 PM * roycroft drives at the speed limit and doesn't worry about speed traps
05:30 PM jthornton: says it holds 10.6 gallons of fuel
05:31 PM * jthornton drives below the speed limit normally
05:31 PM Tom_L: oh, i'm just passing along what others have said :)
05:31 PM jthornton: k
05:31 PM Tom_L: i drive 10 under :D
05:31 PM roycroft: is there another common name for a tappet wrench?
05:32 PM jthornton: like valve tappet?
05:32 PM roycroft: yes
05:32 PM roycroft: a thin open-end wrench
05:32 PM jthornton: hmm yea a thin one... can't think of a name for it
05:33 PM roycroft: i've always known of them as tappet wrenches, but i'm not finding many hits when i search on that
05:33 PM roycroft: i need an m17 tappet wrench
05:33 PM jthornton: wow that's a big one
05:33 PM roycroft: my preference is to not take the shiny, polished one that i have and grind it down
05:33 PM Tom_L: that's what i know them as
05:33 PM roycroft: it's not for adjusting valves
05:33 PM roycroft: ok
05:33 PM jthornton: I was just going to say grind it!
05:34 PM roycroft: so they're either uncommon in metric, or a lot of people don't know what they're called
05:34 PM roycroft: amazon have some "super-thin" wrenches
05:34 PM roycroft: i may end up grinding one
05:34 PM roycroft: this is for my spindle sander
05:35 PM roycroft: i bought a pair of brand new 17mm craftsman fully polished combination wrenches for it
05:35 PM Tom_L: i've ground a few
05:35 PM roycroft: and i did not pay much for them
05:35 PM roycroft: maybe i'll just grind one of them down
05:35 PM roycroft: the wrench is about twice as thick as the spindle boss
05:36 PM jthornton: trying to put the pulley on?
05:36 PM roycroft: no, it's for installing/removing the sanding sleeves
05:36 PM _unreal_: I am strongly considering buying a 3d printer
05:36 PM Tom_L: https://www.amazon.com/17mm-cone-wrench/s?k=17mm+cone+wrench
05:37 PM roycroft: i'm pretty happy with my ender 5, _unreal_
05:37 PM roycroft: oh, yeah
05:37 PM Tom_L: roycroft, ^^
05:37 PM roycroft: and why did i not think to search for cone wrenches
05:37 PM roycroft: i used to work in a bike shop
05:37 PM roycroft: but that was 40 years ago
05:37 PM _unreal_: roycroft, let me re-phrase that a resin 3d printer
05:37 PM Tom_L: damn you must have lived with moses
05:38 PM Tom_L: :)
05:38 PM jthornton: lol
05:38 PM _unreal_: roycroft? back when you were young and beautiful?
05:38 PM roycroft: he was a spunky lad
05:38 PM roycroft: i remember watching him grow up
05:39 PM _unreal_: I'm considering this dirt train https://www.amazon.com/Printer-Evolution-Resolution-Off-line-Included/dp/B08DTZR755/ref=sr_1_66?dchild=1&keywords=resin+printer&qid=1621894671&sr=8-66
05:39 PM * roycroft wonders if he has an m17 cone wrench in his bicycle repair tool box
05:40 PM * Tom_L bets
05:40 PM * jthornton prob has one
05:40 PM jthornton: or two if I could not find the first one
05:41 PM jthornton: roycroft: why do you need a wrench to change the belt?
05:41 PM * Tom_L has a couple old model T wrenches
05:42 PM roycroft: and i do not
05:42 PM jthornton: I have very limited experience with drum sanders and mine has spring clips to hold the belt
05:42 PM roycroft: i have 13,14,15, and 16mm
05:42 PM roycroft: jthornton: this is for a spindle sander
05:42 PM jthornton: a little dremel action
05:42 PM Tom_L: mod the 16
05:42 PM jthornton: ah ok
05:42 PM roycroft: it holds spindles of different diameters
05:42 PM jthornton: I don't have a spindle sander but understand
05:42 PM roycroft: so to change size i have to remove one and replace it
05:43 PM roycroft: i can get through the day with what i have
05:43 PM roycroft: i just want a proper tool
05:43 PM jthornton: understand
05:43 PM * roycroft likes proper tools
05:43 PM jthornton: completely
05:44 PM roycroft: i do have a piece of 01 that's about the right size, and the right thickness
05:45 PM roycroft: o1, rather
05:45 PM roycroft: so making one is also an option
05:45 PM roycroft: that's probably $15 worth of o1 though
05:45 PM roycroft: i can buy a cone wrench for <$10
05:46 PM roycroft: actually, i have to run a couple errands - perhaps i'll just stop by a bike shop and see if they have one
05:46 PM * jthornton wonders why the spindle sander didn't come with a wrench?
05:57 PM _unreal_: posted a few new photos https://photos.app.goo.gl/1ejmwQjHGskbBvob9
05:57 PM _unreal_: let me know what ya think? new photos are at the bottom
05:57 PM jthornton: bourbon barrel!
05:58 PM jthornton: is Z height critical?
05:58 PM _unreal_: in what way?
05:59 PM jthornton: the material
05:59 PM flyback is now known as fishhead
05:59 PM _unreal_: only the focus
05:59 PM jthornton: does it have to be level?
05:59 PM _unreal_: jthornton, I put an expensive lense in the laser
05:59 PM _unreal_: makes it very narrow
05:59 PM fishhead is now known as i8086
05:59 PM _unreal_: I can focus 4" away
05:59 PM jthornton: cool
05:59 PM _unreal_: or down to 1"
05:59 PM _unreal_: but I have a touch probe I built into my design
05:59 PM jthornton: looks good
05:59 PM _unreal_: which is about 2" ish below the laser
05:59 PM i8086 is now known as flyback
06:00 PM _unreal_: that way I can probe my surface and have it auto move to a point that is the most focused
06:00 PM jthornton: cool
06:02 PM * jthornton is ready to head to Memphis Barbecue Company for dinner
06:03 PM * Tom_L just had bbq
06:09 PM * jthornton just realized today is our 34th anniversary
06:10 PM _unreal_: just thought about BBQ THANK....S.....
06:10 PM _unreal_: jthornton, has it relaly been that long.... your blushing LOL
06:10 PM jthornton: yeah, we have been married that long
06:11 PM jthornton: never had an argument...
06:12 PM jthornton: mother of my children on the other hand was a pure bitch and I could not get rid of that thing quick enough
06:13 PM _unreal_: hum
06:13 PM _unreal_: I can relate to a degree
06:19 PM Tom_L: ok out to try some vfd tuning
07:59 PM veegee: Is it just me, or are WNMG trigon inserts bad for mild steel?
07:59 PM veegee: No matter what I do, I get lots of rubbing and chatter
07:59 PM veegee: It feels like the relief angles on the trigon inserts is way too low and as the part heats up, it swells enough to rub against it
08:00 PM veegee: The CCMT inserts didn't have that problem. Or am I just doing it wrong?
08:01 PM Tom_L: right compound?
08:01 PM Tom_L: right cutter type for the material?
08:04 PM veegee: Tom_L this is the insert: https://accusizetools.com/products/wnmg432-carbide-inserts-tin-coated-10-pcs-set?variant=35246190723226
08:04 PM veegee: They did recommend using that for harder steels and alloy steels and indeed it worked fine for those
08:05 PM Tom_L: i'm not expert on inserts
08:05 PM Tom_L: Tin may not be the right coating
08:05 PM Tom_L: iirc that's more for aluminum
08:06 PM veegee: But this is the one I used later and it worked much better: https://accusizetools.com/products/sclc-r-l-toolholders-with-ccmt-carbide-cvd-coated-inserts?variant=35246743191706
08:06 PM veegee: Not sure what "CVD" coated means
08:06 PM veegee: CVD is a process
08:06 PM Tom_L: AlTin may be better for steel
08:06 PM veegee: TiN is also coated via CVD if I remember correctly
08:07 PM Tom_L: This coating works great while cutting or forming with HSS tooling. ... This coating is ideal for HSS cutting tools. • Titanium Aluminum Nitride (TiAlN or AlTiN) A formed layer of aluminum oxide gives this tool better life in high heat applications.
08:07 PM veegee: Ah that could also be the reason. The CCMT inserts are AlTiN
08:08 PM veegee: I guess I have to read up on insert coating.
08:08 PM veegee: HSS is great for custom tools like for making hose barbs and stuff
08:09 PM Tom_L: i seldom use HSS
08:09 PM veegee: But I just love the carbide inserts too much. I've only ever chipped them like twice so no idea how everyone else is chipping them
08:09 PM veegee: Tom_L what do you use?
08:09 PM Tom_L: i use mostly carbide and of late have gotten some coated cutters
08:15 PM * jthornton is FD&H
08:17 PM Tom_L: this spindle kicks ass now
08:28 PM -!- #linuxcnc mode set to +v by passion.freenode.net
08:28 PM -!- #linuxcnc mode set to +v by passion.freenode.net
08:36 PM * flyback bites buzzmarshall
08:36 PM flyback: BMCC
08:36 PM XXCoder: uhoh bot fly bite
08:50 PM Tom_L: finally happy with the spindle behavior
08:51 PM Tom_L: .375 cutter probably .1 deep, half the cutter width @ 2500rpm F15 spindle doesn't bog at all
08:51 PM XXCoder: nice
08:51 PM Tom_L: just a quick manual test
08:52 PM Tom_L: more of a sound test, sorry: https://www.youtube.com/watch?v=iruAYR-V3Ro
08:57 PM veegee: flyback there you are
08:57 PM veegee: flyback I almost forgot I'm Canadian without you remind me every other day
09:02 PM flyback: BMCC
09:02 PM Tom_L: BYOCC
09:03 PM flyback: I was trying to give you a break but since you want to flaunt your canucknes, so be it
09:03 PM flyback: man I been watching videos on people converting habor freight cheap mini mills and drill presses
09:03 PM flyback: that's pretty cool
09:04 PM flyback: that's me
09:04 PM flyback: I can''t start from scratch for shit for anything
09:04 PM flyback: I am best off modding shit
09:06 PM flyback: im also amazed how much threaded rod is used even on high end machines
09:11 PM flyback: there;s a great episode of modern marvels on machine tools
09:11 PM flyback: and how even the hand cranked machines absolutely blew people's skulls open
09:12 PM flyback: "wait 2 of the same part? what the fuck?"