#linuxcnc Logs

Apr 29 2020

#linuxcnc Calendar

12:10 AM norias: what welding process?
12:27 AM CaptHindsight: veegee: PC metal is usually not galvanized
12:29 AM CaptHindsight: but it might have a zinc coating applied
12:50 AM veegee: norias TIG
12:50 AM veegee: CaptHindsight yeah any kind of zinc coating. Have to either remove it or wear an appropriate respirator
05:28 AM jthornton: morning
05:28 AM XXCoder: yo
05:33 AM jthornton: hatch day
06:39 AM SpeedEvil: https://www.youtube.com/watch?v=iJ4yL6kaV1A Wacky waving optical tubeman.
06:39 AM SpeedEvil: (on hyper/telecentric lenses)
06:52 AM dirty_d: Uhoh, I've overlooked something
06:53 AM dirty_d: I'm using linuxcnc on an rpi 4, but vistacnc only supplies x86 and x64 binaries for their mpg pendants
07:11 AM Tom_L: morning
07:25 AM dirty_d: I sent them an email asking if they can provide an arm binary. Plan B is qemu
07:34 AM SpeedEvil: reverse engineer?
07:36 AM dirty_d: hmm
07:36 AM dirty_d: sounds tricky
08:31 AM dirty_d: maybe reverse engineering isnt such a bad idea
08:31 AM dirty_d: I already have all the button presses and stuff captured with lubusb
08:31 AM dirty_d: libusb
08:34 AM Deejay: hi
08:56 AM dirty_d: hello
08:57 AM dirty_d: oh awesome, I figured out how to send text to the screen too
09:26 AM dirty_d: https://photos.app.goo.gl/bsmpczsM8RCJnyDn7
09:35 AM unterhaus: is there a reason you chose that mpg over one of the supported ones?
09:35 AM unterhaus: Is it possible it actually is already supported?
09:35 AM unterhaus: under a different name
09:41 AM dirty_d: oh, hmm
09:46 AM dirty_d: It just looked well built, and it has a screen
09:47 AM dirty_d: I was kind of annoyed that you can't enter an offset when zeroing an axis anyway, so thats reason enough to roll my own
09:51 AM Rab: dirty_d, supposedly there is manufacturer support. Have you seen this? http://www.vistacnc.com/a03_download/download.htm
09:53 AM dirty_d: Rab, oh yea I know, i already have it working on a laptop with linuxcnc, but I have a raspberry pi 4 running linuxcnc for my router, and they only supply x86 and x86-64 hal components for the mpg
09:54 AM dirty_d: I'll probably just temporarily use the laptop instead of the rpi until I create my own hal component
09:54 AM Rab: Ahh...maybe their Machinekit ARMv7 stuff is useful?
09:55 AM dirty_d: hmmm, that might work
09:55 AM Rab: I've been messing with this: https://bitbucket.org/moonglow/openxhc/src/master/
09:56 AM Rab: Got it compiled and flashed into a STM32F103 bluepill board with an LCD attached, and it seems to be working. Haven't had a chance to try to get LinuxCNC to see it.
09:57 AM dirty_d: Rab, so thats the firmware for the MPG?
09:57 AM Rab: dirty_d, I think it's a from-scratch clone, although I haven't dug too far into the source.
09:58 AM dirty_d: I'm not gonna change the firmware for this one, it's dead simple. It just sends the state of the buttons and hand wheel over usb, and displays the characters on the screen that you send it over usb
09:58 AM dirty_d: the hal component does all the logic
09:59 AM dirty_d: I need to change hexchat's colors. My brain is filtering out green messages because it thinks they're code comments
10:01 AM Rab: haha
10:09 AM * Loetmichel is just milling a 50mm by 200mm rectangular tube with 4mm walls... with a 55mm protuding 6mm twoflute... those sounds are like toothpain :-(
10:12 AM Rab: Loetmichel, milling both sides of the tube at once?
10:12 AM Loetmichel: left, right side (cleaning sawcuts) and a biiiig hole for a 10" display in the top
11:28 AM unterhaus: is there something similar to the blue pill that has wifi?
11:35 AM jymmmm: unterhaus: anal camera?
11:37 AM unterhaus: one of my tech nightmares is a robot that does that
11:37 AM unterhaus: I was talking about the computer blue pill
11:43 AM Rab: unterhaus, there's a newer version of the bigger STM32F103 dev board that has some kind of predigested interface for ESP8266 and a few other wireless options: https://www.ebay.com/itm/191974254765
11:44 AM Rab: Of course, one might just use the ESP8266 for everything.
11:44 AM jymmmm: Or the ESP32
11:45 AM Rab: Indeed.
11:46 AM Loetmichel: *hmpf* that wasnt intelligent... starting a mill job probably takes 5 hours 10 minutes into overtime already... i think i'll wait until that thing has finised that one side then pause the machine and go home. I may leave 3dprinters run unattended but CNC routers: nope, not happening ;)
11:47 AM Loetmichel: +that
12:02 PM unterhaus: discussion on the mailing list about the simplest lcnc system. Steppers were added later and might actually be the most complicated lcnc system from a software perspective
12:03 PM jymmmm: unterhaus: oh, never heard of it
12:04 PM unterhaus: jymmm you never heard of the blue pill computer?
12:05 PM Loetmichel: its like an ardunio nano but (IIRC) cheaper and wit a 32 bit controller
12:20 PM CaptHindsight: https://tibbo.com/store/plus1/specifications.html $20 for 4 1GHz ARM cores and a 200Mhz microcontroller
12:20 PM CaptHindsight: $20 from that vendor anyway
12:21 PM unterhaus: the real time processor isn't really like the PRU though, right?
12:22 PM Rab: jymmmm, this thing. Just a very simple STM32 breakout board. https://stm32duinoforum.com/forum/wiki_subdomain/index_title_Blue_Pill.html
12:23 PM Rab: Easily programmed directly, no *duino stuff needed unless one's into that.
12:24 PM CaptHindsight: unterhaus: it's an ARM 926
12:25 PM CaptHindsight: unterhaus: I haven't dug into the details yet but the spec says that it has direct access to the IO pins
12:26 PM CaptHindsight: unterhaus: so similar to the PRU's in the TI
12:26 PM unterhaus: needs more pwm
12:27 PM jymmmm: Rab: can it run an off the shelf distro?
12:27 PM unterhaus: jymmmm, bare metal programming
12:27 PM unterhaus: or arduino, if you want
12:28 PM jymmmm: ah ok
12:28 PM jymmmm: So not a SOC
12:28 PM Rab: jymmmm, it's a flea-powered microcontroller. No distro.
12:28 PM jymmmm: k
12:29 PM jymmmm: OH I see what they are doing... sell the chip for $20, then make you buy the fleas to power it, just like inkjet printers!!!
12:29 PM Rab: Although there is apparently Linux kernel support for the more powerful STM32F4 and STM32F7 MCUs.
12:30 PM CaptHindsight: people argue over system architecture and don't compare apples to apples
12:30 PM Tom_L: they're not apples, they're grapes
12:30 PM CaptHindsight: they don't consider that one group is only concerned with open loop stepper motion
12:31 PM CaptHindsight: and another with both open and closed loop systems
12:31 PM Tom_L: capn, thanks for pointing me in a direction yestersay btw
12:32 PM CaptHindsight: oh and one just shouts about how all old hardware is junk and should be culled
12:32 PM CaptHindsight: no, more than just junk, it's more like disease to him
12:33 PM CaptHindsight: well trained consumer
12:33 PM Tom_L: they _are_ always right
12:33 PM jymmmm: Tom_L red or green?
12:34 PM jymmmm: ...grapes
12:34 PM Tom_L: green
12:34 PM CaptHindsight: how far did machinekit get with separating the GUI from motion control?
12:34 PM Tom_L: never looked at it but probably didn't
12:35 PM Tom_L: on github does master no longer have 2.8 in the source?
12:35 PM CaptHindsight: the open loop group also doesn't seem to be concerned with an interactive GUI
12:35 PM Tom_L: all i saw in git branch was master
12:36 PM CaptHindsight: maybe machine faults are just a email or text message to your phone
12:39 PM CaptHindsight: difficult to discuss without block diagrams and a list of features of what they actually want vs LCNC
12:40 PM Rab: Wasn't there someone here a few years back who was basically living out of an airplane hangar, because a 3D printer burned their house down?
12:40 PM CaptHindsight: Rab: their laser cutter
12:42 PM CaptHindsight: safety is not a concern until they get bitten by something
12:42 PM jymmmm: I'll be back (you've been warned)
01:19 PM unterhaus: didn't machinekit just get rid of nml? Or was that a goal? I recall some library being a sticking point
01:23 PM CaptHindsight: i think that they did almost replace nml
01:24 PM CaptHindsight: not sure how complete they got
01:26 PM CaptHindsight: Machinetalk
01:26 PM CaptHindsight: https://machinekoder.com/machinetalk-explained-part-1-introduction/
01:28 PM CaptHindsight: machinekit was weird, the three main devs went to the LCNC meetup in Wichita and then forked to machinekit
01:28 PM CaptHindsight: chose the BBB and had poor GUI performance
01:29 PM CaptHindsight: i figured they had some product in mind that they never brought to market
01:31 PM CaptHindsight: this was back in 2013 when CNC glue guns were going to revolutionize manufacturing
02:36 PM bmbbsr: Hi is pcw_home online
02:36 PM bmbbsr: Q: Peter did you recive the 7i76e from germany
02:40 PM bmbbsr: pcw_home, Sir are you Here
02:40 PM Tom_L: may have to wait a bit for a reply
02:41 PM bmbbsr: Thank you good to know that the writing came throu
02:41 PM bmbbsr: Cannot send to nick/channe poping
02:43 PM bmbbsr: Tom_L, Sir are you the german men on the Forum MOD
02:44 PM Tom_L: no
02:49 PM CaptHindsight: bmbbsr: http://mesanet.com/ try email vs IRC
02:49 PM bmbbsr: CaptHindsight, i am not the owner only the guy how told how to ship
02:50 PM bmbbsr: shiping cheep and fast in this times is offen a hard search
02:51 PM bmbbsr: 7USD from Germany to California
02:51 PM rmu|w: that seems very cheap
02:51 PM bmbbsr: best offer
02:52 PM pcw_home: Not yet but I have not been to work yet today
02:52 PM CaptHindsight: I think USPS small priority box is >$7 now for domestic
02:53 PM bmbbsr: pcw_home, shipd on 1st april
02:53 PM rmu|w: bmbbsr: which carrier?
02:53 PM bmbbsr: DHL
02:53 PM CaptHindsight: yeah it's $8.30 now
02:54 PM pcw_home: going the other way is currently a nightmare (USPS priority > 1 month delivery time)
02:54 PM rmu|w: DHL should have tracking
02:54 PM bmbbsr: not as a letter
02:54 PM bmbbsr: https://shop.deutschepost.de/briefversand/briefmarken/briefmarken-international/maxibrief-international-7-euro
02:55 PM bmbbsr: there are images in TV that the DHL hubs sink in Packiges
02:56 PM bmbbsr: 4times the amount as on X-mas and only 40% of workers
02:56 PM bmbbsr: full corona shutdown
02:56 PM bmbbsr: BUT we got only 6k death
02:57 PM bmbbsr: im off Thank you Sir pcw_home
03:00 PM CaptHindsight: 2 day priority domestic has been 3-4 days here
03:01 PM Tom_L: mmm now why isn't this kernel showing up
03:01 PM CaptHindsight: wow one is taking 5 days
03:04 PM dirty_d: is there a hal component to subtract a float pin from another?
03:04 PM miss0r: Is there anything worse than not having the correct size heatshrink tube in stock?!
03:04 PM pcw_home: dirty_d offset?
03:06 PM dirty_d: pcw_home, hmm maybe
03:08 PM pcw_home: just need to extend the hal parser to allow math :-)
03:10 PM dirty_d: fb_in - offset = fb_out, in + offset = out
03:10 PM dirty_d: is that right?
03:15 PM pcw_home: yeah it does an add and subtract, you could also use the scale component
03:16 PM pcw_home: a bit more straightforward
03:16 PM Tom_L: is there a way to test if the rtai patch was applied to a kernel?
03:16 PM pcw_home: run the latency test?
03:17 PM Tom_L: i gotta build lcnc first
03:17 PM Tom_L: i wasn't able to name it kernelxxxx-rtai because the linuxcnc build didn't like the -rtai on the end
03:18 PM Tom_L: guess i'll just try to build it
03:18 PM pcw_home: there must be some standalone tests that go with RTAI, but I haven't messed with RTAI for years...
03:19 PM Tom_L: i'm just trying to test it wit buster
03:23 PM CaptHindsight: Tom_L: do you really need the latest RTAI? Andy usually builds packages
03:23 PM Tom_L: i'm using his git download
03:23 PM Tom_L: i'm just testing it out really
03:26 PM CaptHindsight: getting debian packages just right seems to be more difficult than working with gentoo
03:29 PM rmu|w: Tom_L: RTAI should say something in the boot messages. dmesd(1)
03:29 PM rmu|w: sorry dmesg(1)
03:32 PM perry_j1987: hi guys
03:32 PM perry_j1987: hows it going
03:33 PM CaptHindsight: rain rain rain, rain yesterday, rain today, rain tomorrow
03:33 PM perry_j1987: tons of it
03:34 PM perry_j1987: i got some supported linear rails on this 6040 cnc
03:34 PM perry_j1987: are those adjustable or anything?
03:34 PM perry_j1987: im noticing some rocking on the linear bearings if i press on the axis
03:35 PM CaptHindsight: perry_j1987: rocking of the blocks on the rails?
03:35 PM perry_j1987: the holders dont move
03:35 PM perry_j1987: seems to be the bearings themselves
03:36 PM perry_j1987: there's a setscrew in the side of the blocks is that an adjustment or just retainer ?
03:36 PM CaptHindsight: round rails or profile?
03:36 PM perry_j1987: those round supported type
03:38 PM CaptHindsight: no adjustment
03:38 PM perry_j1987: figured
03:38 PM CaptHindsight: just poorly made
03:38 PM CaptHindsight: you might be able to fix it by replacing the balls with balls slightly larger
03:39 PM CaptHindsight: and you can easily end up with 100's of balls on your floor :)
03:39 PM perry_j1987: aye heh
03:39 PM perry_j1987: harbor freight has the mini mill for 499 on sale right now
03:41 PM perry_j1987: prob be better than this 6040 eh? :P
03:41 PM CaptHindsight: ^^ also made pretty poorly, you would likely want to rebuild it after you get one right out of the box
03:41 PM CaptHindsight: they just cut corners and rush them together
03:42 PM CaptHindsight: no quality control
03:44 PM CaptHindsight: https://www.youtube.com/watch?v=TC5ZGU3JUfM Mini Mill Complete Tear Down & Repair
03:45 PM CaptHindsight: good way to learn for cheap
03:57 PM perry_j1987: i need to get an arbor press too
03:57 PM perry_j1987: watching that video now
04:01 PM CaptHindsight: I think there are video showing how to rebuild just about every HF tool to make them work properly :)
04:03 PM infornography: HF should watch them
04:05 PM CaptHindsight: HF tools are a like a preassembled kit with parts that might be defective
04:05 PM infornography: lol
04:05 PM CaptHindsight: the fun is finding out which parts are bad
04:05 PM CaptHindsight: thats why they are sold at a discount price
04:06 PM infornography: That is the best description of HF tools ever
04:06 PM CaptHindsight: there are no bargains in China, just defects that you missed
04:13 PM * JT-Shop went down to HF when I was shopping for aluminum bar clamps and I'm still amazed that they could make them from aluminum flashing
04:15 PM roycroft: those are actually budweiser cans that they weld up at the factory in china
04:32 PM Deejay: gn8
05:32 PM flyback: my dad had a nice brake
05:32 PM flyback: $500
05:32 PM flyback: more like a few thousand back in the late 80-90's
05:32 PM flyback: till some asshole just came by and stole it
05:33 PM flyback: probably the union
05:33 PM flyback: they used to come to whever he worked to protest him being a independent contracter
05:33 PM flyback: then "accident" vandalize the site in the middle of the night
05:33 PM flyback: now a days things would be very different with me being an adult and around
05:34 PM flyback: i'd video their ass then dox the shit out of them via a rented airplane with a banner
05:51 PM _unreal_: jesus I just some website lock my computer hard. just released BUT omg.....
05:51 PM _unreal_: scrolled down and just a SHITTTTTTTTTTTTTTTTTTTTTTTT load of active content
05:51 PM _unreal_: videos's moving stuff and everything was active
05:52 PM _unreal_: linux with 8gigs ram and it took this i5 to its keens
05:52 PM _unreal_: knees
05:52 PM _unreal_: ve7it, hello
05:52 PM _unreal_: finally FINALLYY!!!!!!!!!!!!!!!!!! FINALLY finally got my god damn box from my "" friend "" and he did a TOTAL shit job on it
05:53 PM _unreal_: its so bad I'm going to have to build a new one mys elf
05:53 PM _unreal_: when I can afford the $ and time
05:53 PM _unreal_: in anycase I'm using it for now and I'm going to design everything modular. so I can just build the new box pop the hole sand blast everying over
05:54 PM _unreal_: I'm in the process of putting holes in it so I can get all of my wires and connectors and everything in
05:54 PM _unreal_: ve7it, when I get everything in I'll hit you up for help on getting the wiring for sure correct
06:18 PM _unreal_: ok I'm clean
06:35 PM Tom_L: _unreal_, there are blockers for that
06:37 PM _unreal_: blockers?
06:37 PM _unreal_: I dont know what a blocker is
06:37 PM Tom_L: on ff i use ublock
06:38 PM Tom_L: let's see the box
06:38 PM Tom_L: i was gonna make one for mine but found a good one cheap off ebay back then
06:58 PM _unreal_: Tom_L, I had to have a METAL box for protection
06:58 PM _unreal_: see :S
06:58 PM _unreal_: I guess I'll take a picture
07:00 PM Tom_L: right, mine is metal
07:01 PM Tom_L: you could probably find a decent one for not that much
07:04 PM _unreal_: how much did you pay?
07:04 PM _unreal_: and got pictures?
07:04 PM _unreal_: or links
07:05 PM jymmmm: adblock plus
07:07 PM Tom_L: https://www.ebay.com/itm/RITTAL-P-AE1380-CABINET-380X380X210MM/262113125530?epid=1918321929&hash=item3d0728e49a:g:SAIAAOSwtZJZALcc
07:09 PM Tom_L: https://www.ebay.com/itm/AE-1380-Rittal-15X15X8-UL-Type-4-Enclosure/124066086188?epid=1918321929&hash=item1ce2ea3d2c:g:G5UAAOSwWy5eMwgI
07:09 PM Tom_L: looks like that one has the mounting plate
07:09 PM Tom_L: it could have been a tiny bit bigger but i made it all fit
07:15 PM jdh: I bought an ebay rittal for my mill. came with the mount plate, lots of panduit, estop, start button, power disconnect
07:15 PM Tom_L: mine just had the plate and some odd hardware
07:16 PM Tom_L: it looked funny connected to the sherline
07:29 PM jymmmm: casting stuff using silicone chalking https://www.youtube.com/watch?v=0jFjaVuueEU
07:33 PM _unreal_: tom uploading
07:34 PM skunkworks: cutter relief is important... http://electronicsam.com/images/greenmachine/IMG_20200429_193003.jpg
07:41 PM _unreal_: https://drive.google.com/open?id=1oFKu3KSng5dfsDN-0PDKjvcjW53DhB_q https://drive.google.com/open?id=1oDvm36DGsqb6uO2yvpbiH9L4cP1IavoB https://drive.google.com/open?id=1o8IHcEOIxtDsvRoC6JXarxc0tJ8AEW4Q https://drive.google.com/open?id=1oBumREroOJCuSqaEKQf4ArOw_VKBpKLB https://drive.google.com/open?id=1o97VIJZmuPgp7cbOxaL17NrMCUi2x_9w
07:41 PM _unreal_: Tom_L,
07:49 PM _unreal_: Tom_L, ???
07:49 PM _unreal_: sigh
07:52 PM jymmmm: skunkworks: ImageMagick... it's a thing
07:53 PM jymmmm: skunkworks: it that a spiral hole?
08:01 PM skunkworks: yes. The one on the right has some artifacts from the cutter not having enough relief
08:04 PM skunkworks: jymmmm: now the one on the left is the bad one.. http://electronicsam.com/images/greenmachine/IMG_20200429_200154.jpg
08:04 PM jdh: I got an email yesterday that had your pics and a link to that forum post
08:04 PM andypugh: Was it claiiming credit?
08:04 PM skunkworks: the slight line you see in both is backlash being compensated... (probably as good as it gets)
08:04 PM skunkworks: jdh: really? odd. from who?
08:05 PM skunkworks: (eoffset seems to apply backlash comp too - cool)
08:05 PM jdh: Tapatalk app topic thing
08:08 PM jdh: https://imgur.com/a/WouATw0
08:09 PM skunkworks: ah - practical machinist.. I really thought that was going to be a dumbster fire.. But everyone (except 1) has been really supportive..
08:10 PM jymmmm: skunkworks: There's ALWAYS one.
08:13 PM jymmmm: skunkworks: I had one guy that always called in having issues. No matter what I did to solve his issues, he was never ever happy. One time when he was extremely pissed, I offered to send a call tag (free return shipping) and refund his $5000 back. He was pissed said no, then hung up on me. You just can't please everyone
08:13 PM skunkworks: yikes..
08:14 PM skunkworks: practical machinist is usually very snobby towards anything that looks or smells like hobby machines.
08:14 PM jymmmm: skunkworks: fuck em if they can't take a joke =)
08:15 PM jymmmm: it's called practical, not professional
08:16 PM skunkworks: Like I say - I was pleasantly suprised...
08:29 PM perry_j1987: mmmm rum
08:29 PM perry_j1987: hows it going tonight guys
08:34 PM dirty_d: https://photos.app.goo.gl/b63EGyRth8pyvpwZ6
08:34 PM dirty_d: great success
08:34 PM dirty_d: I don't know how, but I'm getting about 0.0002" repeatability
08:50 PM Rab: skunkworks, is that aluminum, or steel?
08:50 PM dirty_d: Rab, I tried the machinekit mpg binary on rpi 4, no dice
08:50 PM Rab: dirty_d, ahh
08:52 PM dirty_d: skunkworks, what kind of spindle motor do you have?
08:59 PM skunkworks: ummm.. it is a 750w (i think) brushless dc run by a stmbl amp
09:00 PM skunkworks: Rab: aluminum.. have not triex steel
09:01 PM skunkworks: dirty_d: this is all been done using a pi4
09:02 PM dirty_d: skunkworks, I think I used your videos to fix some problems
09:03 PM skunkworks: awesome!
09:03 PM dirty_d: like the systemd-timesyncd one, and whatever else
09:03 PM skunkworks: that tripped me up for a long time
09:03 PM dirty_d: I've been using a laptop though, because vistacnc doesn't have arm binaries for linuxcnc
09:04 PM CaptHindsight: are any stores still open after 10pm?
09:05 PM CaptHindsight: I've only noticed gas station mini marts
09:51 PM jymmmm: Uh oh, I'm on lockdown, and just found a DIY pyrotechnics website, RUN CaptHindsight RUN!!!!
09:51 PM jymmmm: they have both, pyro and rockets =)
09:54 PM CaptHindsight: heh
10:02 PM Tom_L: mr jimmy 9 fingers
10:14 PM jymmmm: Tom_L I do t kn w wh t you re ta king abo t ;)
10:16 PM Tom_L: :/
10:17 PM jymmmm: Tom_L But honestly, gotta blame jthornton for it. HE's the one with a cannon that gave me ideas and got me started
10:18 PM Tom_L: i'm good with blaming him :)
10:20 PM jymmmm: Actually, watching TKOR gave me a lot of insight for what I'm wanting to actually accomplish, and need to look a different route at things
10:21 PM jymmmm: and I found a getting started book I'll need to look over
10:30 PM CaptHindsight: jymmmm: avoid anything that has nitric acid or mercury in it
10:35 PM jymmmm: CaptHindsight: Heh, even lye scares me =)
10:35 PM jymmmm: nitric, sulfuric, no thanks
10:38 PM CaptHindsight: any concentrated acid
10:39 PM CaptHindsight: and lye will take you apart
10:45 PM skunkworks: http://electronicsam.com/images/greenmachine/IMG_20200429_222019.jpg
10:46 PM skunkworks: last one - I swear
10:46 PM skunkworks: one on the right had tool clearance issues.
10:46 PM Tom_L: awww
10:46 PM Tom_L: i was more concerned about the missed hole chamfer :)
10:46 PM skunkworks: Now to make the 'bolt' ;)
10:47 PM skunkworks: cool huh? from an old tape machine..
10:47 PM skunkworks: recycling!
10:47 PM Tom_L: i figured it was some scrap..
10:47 PM skunkworks: 1/2" thinck
10:47 PM skunkworks: thick
10:48 PM skunkworks: it is actually from the piece of aluminum we first tested rigid tapping on the K&T
10:48 PM skunkworks: found it in the bottom of the scrap bucket
10:48 PM Tom_L: that big tap?
10:48 PM skunkworks: yes - 1 inch
10:48 PM Tom_L: i remember that
10:49 PM Tom_L: i used to collect cutoffs from my bud's shop
10:49 PM Tom_L: that's what my speed handle was made from
10:50 PM skunkworks: it is nice to have random stuff
10:50 PM Tom_L: until you stub your toe on it
10:50 PM skunkworks: I trip over everything
10:57 PM Tom_L: you figure out what caused the line up the middle on the left one?
11:01 PM skunkworks: backlash
11:01 PM Tom_L: i figured
11:02 PM skunkworks: I didn't know eoffset applies the backlash comp - kinda cool