#linuxcnc Logs

Jul 26 2021

#linuxcnc Calendar

12:42 AM XXCoder: simpler fracial jaw https://youtu.be/KlPNBipNGpU
01:09 AM randy: morning
01:50 AM Deejay: moin
02:09 AM Guest9718: I am new to LinuxCNC. I have a 3 axis CNC built by me and working with Mach3 on windows 7 (32 bit) OS
02:09 AM Guest9718: I also installed Linux CNC in a raspberry pi 4 board
02:09 AM Guest9718: Is there any USB breakout board I can use to control my CNC with Raspberry Pi ?
02:10 AM XXCoder: MESA is usual for that
02:10 AM XXCoder: theres ethernet one, not sure if theres usb one.
02:11 AM Guest9718: Can you send me a link or part number ?
02:11 AM XXCoder: a second
02:11 AM XXCoder: heres usa one https://mesaus.com/
02:11 AM XXCoder: theres some others
02:13 AM Guest9718: Are these open source schematics?
02:13 AM Guest9718: Thanks. I will have a look
02:13 AM XXCoder: nah mesa is commerical. im not sure what else can be used with rpi
02:15 AM Guest9718: Are there any RPI hat boards ?
02:16 AM XXCoder: i remember theres cnc hats yeah but no idea how that works
02:16 AM XXCoder: example https://www.pishop.us/product/raspberry-pi-cnc-board/
02:16 AM XXCoder: just first one i found, not best or cheapest or whatever
02:17 AM XXCoder: it seems to run GRBL so probbaly not compitable with linuxcnc? dunno
02:29 AM Guest9718: Thanks
02:30 AM XXCoder: welcome
02:30 AM Guest9718: So LinuxCNC mainly uses MESA boards ?
02:30 AM Guest9718: I mean most popular ?
02:31 AM XXCoder: nah, i referred to it because rpi its better to use mesa with it. mesa is better overall too
02:31 AM XXCoder: but my setup, I use computer so I use BOB (break out board) with 3 tb6600s
02:32 AM XXCoder: i dont know if rpi4 can do parallel or not, but if it can, it can be done that way. tb6600s is cheap tech, theres likely better nowdays
02:37 AM Guest9718: So this tb6600s can be used with a desktop computer ?
02:37 AM Guest9718: Where can I buy this BOB ?
02:37 AM XXCoder: with BOB yeah but i bought tb6600s in 2016
02:38 AM XXCoder: not sure if its best for very cheap range (when you has strict budget)
02:38 AM XXCoder: oh just searcg for oparallel breakout board cnc
02:38 AM XXCoder: -o
02:39 AM XXCoder: is it just play around with cnc, or is it production that makes you in least few hundred dollars a month or more?
02:39 AM XXCoder: bob and tb6600s is more for home hobbyist since its fairly cheap
02:40 AM XXCoder: MESA is cheap enough that it can be on better end hobbyist, to small business
02:40 AM XXCoder: im sure can do more but yeah i cant really say for sure
02:43 AM Guest9718: OK. Thanks for your opinion
02:43 AM XXCoder: welcome
02:43 AM XXCoder: it always depends on usercase
02:44 AM Guest9718: I will try to install LInuxCNC on my desktop partition and hopefully the Mach3 Parallelport BOB will work with it
02:44 AM XXCoder: cool, though i do recommand checking latency
02:44 AM Guest9718: ok
02:45 AM XXCoder: with BOB and such, latency is pretty important, and you want it to be in certain range
02:45 AM XXCoder: 25k us to 50k us? forgot range is good.
02:45 AM XXCoder: my old pc was 17k us, and laptop with parallel port was over 100k us
02:46 AM Guest9718: ok
03:34 AM CaptHindsight[m]: Mach3 Parallelport BOB, some are made better than others, that has become a generic label on ebay and Mamazon
04:05 AM Tom_L: morning
04:19 AM -!- #linuxcnc mode set to +v by ChanServ
05:00 AM -!- #linuxcnc mode set to +v by ChanServ
05:31 AM JT-Cave: morning
05:54 AM alex_joni: g'morning
05:54 AM XXCoder: heys
08:20 AM solarwind: I can use ER70S-6 MIG wire as a filler for TIG right?
08:21 AM solarwind: For some reason, small diameter ER70S-6 (like 0.9mm) TIG rods are 3-4x the cost of a MIG spool per unit weight
08:22 AM solarwind: I don't do MIG, so I'm not sure how heavy a 4" spool is, but it looks like it's plastic and pretty thin. A 2lb spool costs ~$10 whereas a 1lb tube of TIG rods cost $20...
08:23 AM CloudEvil: unfluxed mig wire is just wire.
08:23 AM CloudEvil: Some may be copper coated
08:41 AM solarwind: CloudEvil It's the same as TIG rods though right?
08:41 AM solarwind: Like it should be identical, no?
08:49 AM CloudEvil: The metal is identical as I understand it.
08:49 AM enleth: the alloy could be slightly different, but so it can between MIG wires and TIG wires from different manufacturers
08:49 AM solarwind: Yeah, the guy from weldingtipsandtricks apparently twists up extra mig wire and uses it as a replacement for thicker TIG rods
08:49 AM enleth: MIG wire is perfectly usable with TIG
08:50 AM enleth: and I suppose in a pinch, you could feed a spool gun with TIG rods
08:50 AM solarwind: If the AWS designation is the same (ER70S-6), it would be odd if the alloy was different
08:51 AM solarwind: I guess I'm going to be buying the spool of 0.9mm wire. Well a spool of most diameters from now on for thin filler because it's so much cheaper for some reason
08:51 AM CloudEvil: Wirecutters are expensive, to be fair.
08:51 AM CloudEvil: (not actually)
08:54 AM solarwind: lol!
08:54 AM solarwind: The cheapest cutters will work for mild steel filler
08:55 AM solarwind: Tungsten electrodes on the other hand, not only hard, but tend to split along the axis
09:02 AM CloudEvil: Part reels can also be inexpensive on ebay
10:30 AM solarwind: Ok I did something very silly
10:30 AM solarwind: I flattened the edge of my plastic ruler on my precision toolroom flatstones
10:30 AM solarwind: Now they're clogged with plastic
10:31 AM solarwind: Is acetone safe for the binder used in the stones? Acetone should dissolve the plastic instantly
10:31 AM solarwind: I guess I could also bake them in my oven
10:32 AM solarwind: The ruler turned out nice though. Now I can draw straight lines without messing up the tips of my drafting pens
10:38 AM solarwind: Unrelated: just noticed on the packaging that the reciprocating saw blades have M42 teeth. That explains why they last so long - longer than my M2 lathe tools.
11:25 AM Eric_ is now known as unterhausen
11:32 AM unterhaus: anyone set up hex chat to automatically login?
11:33 AM Roguish: unterhaus, sure.
11:34 AM unterhaus: I think I got it to work
11:34 AM unterhaus: since I can talk on this channel
11:34 AM Roguish: select the channel, right click, pick 'autojoin'
11:55 AM CaptHindsight[m]: unterhaus: the trade-off with using the autojoin is that your ip address will be exposed even if you use a cloak
11:56 AM CaptHindsight[m]: there should be a delay of joining any channels until after the cloak
11:57 AM unterhaus: I have always used autojoin. Was more interested in identifying my nick
11:59 AM jepler[m]: Has anyone tried GitHub discussions? https://docs.github.com/en/discussions
12:00 PM jepler[m]: It's tempting to imagine putting the forum in read only mode and transitioning to a hosted service since it puts stuff like signups , spam fighting, and notifications on someone else
12:02 PM jepler[m]: If your irc client can use sasl authentication, that takes place before any channels can be joined. I think irssi and the matrix bridge both use that method. I'm also not super worried about exposing my IP but others may feel different
12:06 PM CaptHindsight[m]: the current mods would out of jobs wandering aimlessly in an inert sea of hosted by someone elseness
12:30 PM * roycroft wonders what happens when github goes the way of sourceforge, and the hosted services stop working
12:34 PM JT-Shop: same thing when travis.org shut down
12:41 PM JT-Shop: roycroft, got the carcass fit up https://gnipsel.com/images/wood-working/saw-stop/saw-cabinet-01.jpg
12:42 PM JT-Shop: it's laying on it's side...
12:42 PM Tom_L: despite your crooked edge?
12:43 PM Tom_L: you did mention not truing up some edge a day or so ago...
12:44 PM Tom_L: although i don't see it
12:46 PM roycroft: nice
12:46 PM solarwind: roycroft I don't think github will ever sink to the level of sourceforge
12:46 PM roycroft: lock miter joints are rather strong
12:47 PM roycroft: people thought sourceforge was great while it was in its prime
12:47 PM solarwind: unterhaus did you figure out how to auto auth in hexchat?
12:48 PM solarwind: unterhaus let me know if not, I'll walk you through it
12:48 PM * roycroft operates his own gitlab server, so as to never have to be subject to the whims of his hosting service
12:49 PM solarwind: sourceforge was modifying binaries and injecting adware into them. I can't imagine github doing that
12:49 PM solarwind: I run my own gitlab server as well
12:49 PM roycroft: i can imagine a lot of things :)
12:50 PM solarwind: Microsoft bought github, so I don't think they'll ever run out of money
12:50 PM roycroft: i wasn't aware that microsoft bought github
12:50 PM Tom_L: yup
12:50 PM roycroft: now my "what if" concern is a "when" concern
12:50 PM Tom_L: probably couple years ago now
12:50 PM Tom_L: maybe more
12:51 PM solarwind: The new CEO of Microsoft has been doing a good job. He's behind their push to open source .NET and all that
12:52 PM solarwind: Personally I stay away from closed source stuff and avoid any Microsoft dev tools, but I think their recent major moves have been positive overall
12:52 PM roycroft: i don't care about open source vs. closed source for most things
12:53 PM roycroft: i'm more concerned with open file formats vs. closed file formats
12:53 PM solarwind: Oh, well yeah, I agree with that
12:53 PM solarwind: APIs as well
12:53 PM roycroft: and while microsoft do support open file formats, they still retain their proprietary formats and default to them
12:54 PM roycroft: such that it can still be difficult to exchange documents created by microsoft products with users who do not have those same products
12:54 PM solarwind: They open sourced the spec for their office suite formats like docx, xlsx
12:55 PM roycroft: but then, microsoft are the company who created an entry level office suite - microsoft works - and a high-end office suite - microsoft office - that could not exchange files
12:55 PM roycroft: if you wanted to "upgrade" from works to office you got to toss all your old documents and start over
12:56 PM solarwind: There's always screen shot and OCR :)
12:56 PM roycroft: to be fair, when apple came out with pages i got it right away, and created hundreds of documents using it
12:56 PM roycroft: then i moved on to libre office, but a few years later needed to access some of those pages docs
12:56 PM roycroft: so i got the current version of pages, figuring i could open them in that and export them as rtf
12:57 PM roycroft: but the current pages will not open old pages docs
12:57 PM roycroft: fortuantely i had a vm image of an old version of mac os, and was able to install an old version of pages on that to do the conversions i needd
12:58 PM roycroft: but i did not convert all of them, because it's a lot of work, so i have to keep that old vm image around in case i ever need to access an old doc that i'd not converted yet
12:58 PM solarwind: I had a similar issue. I used this and wrote a program: https://tika.apache.org/1.6/api/org/apache/tika/parser/iwork/IWorkPackageParser
12:59 PM roycroft: i just use rtf as my text document format now
12:59 PM roycroft: for marked-up text
12:59 PM roycroft: unless i'm using troff macros, in which case i do my own markup
01:00 PM roycroft: or tex, on the rare occasion that i use tex
01:00 PM roycroft: which is only when i have to format complex mathematical formulae
01:00 PM roycroft: which i very rarely do
01:00 PM solarwind: I use HTML and version control. The editor saves it as HTML, I don't need to actually write the markup
01:01 PM solarwind: I would use RTF but it's a "binary" format
01:03 PM solarwind: Well, it uses a lot of escape codes which aren't fun to diff through
01:05 PM solarwind: But libreoffice and the open document formats are great. I love being able to parse through them with Python effortlessly
01:07 PM solarwind: So coworkers can keep their formatting, custom fonts, whatever and I can still treat it like a database table in code and access those extended properties to determine which rows are headers, etc. I think there are libraries for xlsx too
01:11 PM roycroft: i usually compose things using an editor such as vi, and run them through a markup engine later, be it troff or some rtf-based editor
01:12 PM serp: Do you know of a good python library for creating presentations in odp format? I searched for this a while back and tried a few i found on github but ultimately they were incomplete and harder to use than other libraries for other types of presentation files
01:12 PM roycroft: but i've always seen composing, editing, and formatting as three separate, mostly sequential, operations
01:13 PM roycroft: the notion of wysiwyg has always baffled me somewhat
01:19 PM roycroft: why would i want to see the final formatting of an idea that i'm still formulating and composing?
01:25 PM solarwind: My laminating pouches don't have the thickness specified but my laminator has an option for 3 mil or 5 mil
01:26 PM solarwind: Is mil thousandth of an inch?
01:26 PM solarwind: So I can just measure the overall thickness of the pouch with my micrometers?
01:27 PM unterhaus: solarwind, thanks I think I got it to work
01:28 PM solarwind: unterhaus nice. It's a bit hidden in the server settings dialog box
01:32 PM solarwind: My laminating pouch is 7 thou and my paper is 4 thou. So do I pick the 3 mil or 5 mil option D:
01:36 PM solarwind: This is as critical as feeds and speeds!
01:46 PM JT-Shop: back side where the shelves will go https://gnipsel.com/images/wood-working/saw-stop/saw-cabinet-02.jpg
01:46 PM JT-Shop: front side where the drawers will go https://gnipsel.com/images/wood-working/saw-stop/saw-cabinet-03.jpg
01:50 PM roycroft: "mil" is a word that should be banished from the english family of languages, because it means different things to different people, but always in the context of something whose meaning everyone must agree upon
02:10 PM * JT-Shop ponders how to drill the shelf pin holes without a fancy drill guide
02:15 PM roycroft: throw a piece of angle iron on the mill and drill a bunch of 5mm holes 32mm apart
02:17 PM Roguish_shop: shit howdy. my mill is running it's very first program..... 3d_chips
02:18 PM roycroft: contrats
02:18 PM roycroft: congrats, rather
02:18 PM Roguish_shop: JT-Shop, years ago i made a simple drill guide. cnc'd a piece of 1x.25 flat alum bar. works great. cheap.
02:19 PM Roguish_shop: roycroft, thanks
02:26 PM roycroft: i have a mystery parcel arriving today via ups
02:26 PM roycroft: i suspect it may be the part for my garage door opener
02:37 PM JT-Shop: Roguish_shop, congrats man
02:38 PM JT-Shop: I was thinking of using a alum bar... hmm if I make the holes 1" from the edge I can align the bar to the edge and dado
02:38 PM JT-Shop: for the back holes
02:39 PM JT-Shop: 32mm apart?
02:40 PM JT-Shop: https://gnipsel.com/images/wood-working/saw-stop/saw-cabinet-02.jpg the shelves go in this area
03:14 PM Roguish: anyone have a source for good, low cost R8 collets?
03:16 PM JT-Shop: good and low cost don't fit in the same sentence, pick one lol
03:16 PM Roguish: well, there's cheap, and there's inexpensive. I look for value. $$$/performance
03:17 PM Roguish: don't like 'cheap'
03:19 PM JT-Shop: last time I bought a R8 collet was 2002 or so
03:20 PM Roguish: tormach, TTS has been recommended. but that starts with a special R8
03:21 PM Roguish: guess it's ground flat on the face.
03:21 PM Roguish: of course, tormach wants like $40 for one.
03:22 PM JT-Shop: wow
03:23 PM Connor: You can use standard R8 with TTS, It interfaces with the face of the spindle. The TTS tool holders have a recess / clearance that'll allow a normal collet to work.
03:23 PM Connor: I'm not sure WHY they have the flat ground collets.. They may be a little more springy or something..
03:23 PM Connor: I have one.
03:24 PM Connor: My R8 set was either from little machine shop or Shars.
03:24 PM Roguish: Connor, it your's an official Tormach brand?
03:24 PM Connor: Yes. Both the collet and the tool holders.
03:24 PM Roguish: ok thanks.
03:24 PM Connor: But, Like I said, I've used the tool holders on my normal 3/4" R8 without issue
03:25 PM Roguish: i'll probably break down and purchase the Tormach.......damn it.
03:25 PM Roguish: how are the Shars R8's
03:25 PM Connor: In manual machine, with no Tool changer.
03:25 PM Connor: They're good. No issues.
03:26 PM Roguish: https://tormach.com/tts-adapter-collet-r8-50568.html
03:26 PM roycroft: i've pretty much decided on the tormach system for when i do my mill conversion
03:26 PM roycroft: $1k for the cnc conversion
03:26 PM roycroft: $2k for the tts
03:26 PM roycroft: :)
03:29 PM XXCoder: isnt 1k still cheaper? or is there other factors
04:02 PM roycroft: that's not an either or cost
04:03 PM roycroft: i need both
04:03 PM roycroft: i'm just putting the cost of the tormach tts in perspective
04:03 PM roycroft: the tool holders will cost twice as much as the cnc conversion itself
04:04 PM XXCoder: pl
04:04 PM XXCoder: ok
04:05 PM roycroft: although if i'm honest, the cost for the tormach tts is a fixed cost - i already have every toolholder/adapter/etc. stipulated in a spreadsheet, and i know exactly how much it will cost me
04:06 PM roycroft: the cnc conversion is $1k invested that i kept track of, but there's probably another $1k in cost for things i forgot to track, and for miscellaneous things i won't know i need until i need them
04:06 PM roycroft: so the tts probably will cost the same as the cnc conversion in the end, not twice as much
04:08 PM JT-Shop: https://gnipsel.com/images/wood-working/saw-stop/saw-cabinet-04.jpg
04:08 PM JT-Shop: well that went very easy
04:09 PM roycroft: nice
04:09 PM roycroft: looks like that jig worked great
04:09 PM roycroft: i cut and fitted the lower rails for my lamp frame at lunch today
04:10 PM roycroft: i'll do the upper rails after work, and i should have it glued up by tonight
04:10 PM roycroft: i already am unsure about the dimensions, but that's why i made a cheap prototype
04:10 PM roycroft: the next one will be more refined
04:15 PM Tom_L: pfft using metal on a wood project!
04:18 PM Tom_L: looks good though :)
04:18 PM JT-Shop: lol
04:18 PM JT-Shop: didn't have any ironwood
04:20 PM JT-Shop: I had to borrow a 5mm shelf pin from the garage shelves lol
04:20 PM JT-Shop: roycroft, got a photo of what your working on?
04:21 PM Tom_L: the sky has opened up wide here
04:22 PM roycroft: i'll take one later on, when i get the upper rails fitted
04:22 PM JT-Shop: sunny and hot here, I had to put some tarps above the tomato plants so they don't get too hot
04:22 PM roycroft: it's just a prototype
04:24 PM roycroft: work is done in less than an hour
04:24 PM roycroft: the upper rails are going to be a little tricky to fit, though - it may take me a while
04:25 PM roycroft: lots of very fiddly joinery, as three pieces of wood need to occupy the same space
05:04 PM * JT-Shop tries to think if there is anything else to do to the cabinet carcass before glue up
05:05 PM XXCoder: seal everything
05:05 PM XXCoder: nah dunno heh
05:06 PM Tom_L: it will come to you soon as you squirt the glue bottle
05:06 PM JT-Shop: apply finish after cabinet is done...
05:06 PM JT-Shop: yep, that's what I'm afraid of
05:10 PM JT-Shop: going for it!
05:11 PM roycroft: you should apply finish to the inside before the glue up
05:24 PM JT-Shop: oh well, too late for that
05:25 PM JT-Shop: the finish won't mess with the titebond glue?
05:27 PM XXCoder: dont have to do all of it, just parts that will be hard to reach when assembled
05:29 PM JT-Shop: everything is easy to reach
05:30 PM JT-Shop: I didn't even think of finishing the inside of the drawer box but the shelve area needs something
05:31 PM JT-Shop: I suppose
05:32 PM JT-Shop: a couple of bucks are at my feeder, I wonder if they ran Bambi off?
05:50 PM roycroft: i mask off the areas that will be glued
05:51 PM roycroft: it's a lot easier to finish whatever can be reasonably finished before eassembly
05:51 PM roycroft: if you finish the inside of the drawer box, use shellac or lacquer
05:51 PM roycroft: if you use a varnish it will offgas for months while it cures
06:03 PM JT-Shop: I'm thinking a bit of T&T...
06:04 PM JT-Shop: it's my first cabinet I think...
06:06 PM XXCoder: soon, you will replace all your wood stuff in house ;)
06:06 PM XXCoder: in least it seems like, with that guy
06:08 PM JT-Shop: my phone still thinks it's in the smoky mtns
06:12 PM JT-Shop: that's going under the extension of the table saw so I don't have a bunch of crap on top of it all the time lol
07:00 PM solarwind: aaaaaahhhh gotta love that chest pain from years of breathing thorium dust
07:11 PM roycroft: well, i did the first dry fit of my lamp frame and it fit well
07:14 PM XXCoder: awesome
07:22 PM roycroft: so with the caveats that this is a first prototype, made of scrap materials, is in no way selleable, and little time was spent matching the wood grain, etc., i took some pictures, as jt requested
07:22 PM roycroft: https://roycroft.us/Andon
07:23 PM roycroft: the kumiko panel is an example of the type of panel i would insert in the lamp sides, backed with rice paper, of course
07:23 PM roycroft: it will not fit the lamp frame i just made
07:25 PM XXCoder: interesting asseembly
07:26 PM roycroft: i think the kumiko panel picture will give folks an idea what those jigs i just made are used for
07:26 PM XXCoder: no homepage?
07:26 PM roycroft: no
07:26 PM roycroft: you only get what i choose to share :)
07:27 PM * XXCoder hacks
07:27 PM roycroft: when i have product for sale there will be a standard e-commerce website
07:27 PM XXCoder: nice
07:28 PM roycroft: ash is one of the worst woods to use for such fiddly joinery
07:28 PM roycroft: but it's a beautiful wood
07:28 PM roycroft: and, more importantly, i have heaps of it laying around left over from my bench build last summer
07:28 PM roycroft: so it is the perfect prototyping wood for that reason
07:34 PM XXCoder: nice
07:34 PM XXCoder: wood being so exensive its good to test stuff
07:34 PM XXCoder: prices should be getting better
07:34 PM XXCoder: JT-Shop: btw no go for now for job :(
07:34 PM XXCoder: both machines i can run while dizzy isnt busy enough yet
07:37 PM roycroft: hardwood did not shoot up as much as construction lumber and sheet goods, but it's still expensive stuff
07:37 PM roycroft: and sorry to hear about your job
07:37 PM roycroft: but that they're still talking to you is encouraging
07:37 PM roycroft: or should be
07:38 PM XXCoder: yeah
07:38 PM XXCoder: theyre trying to employ me, but its rough road
07:38 PM XXCoder: company was already beat around a lot by time covid hit it
07:39 PM XXCoder: 737 maxm trump and metals, some more 737 max, then covid
07:43 PM roycroft: times have definitely been more challenging than usual for the past few eyars
07:43 PM roycroft: years
07:43 PM XXCoder: yeah
10:07 PM * flyback kicks Bleepshop in the shins
10:08 PM * Bleepshop shorts flyback to ground causing his HV circuit to overload.
10:25 PM JavaBean: i am pretty sure his "HV circuit" gets left at work everyday... something about being home to relax... not sure how you do that tho
10:39 PM XXCoder: higb volt circuit?
10:41 PM JavaBean: since we are talking about a certain fly, the HV circuit is probably 12v
10:42 PM XXCoder: fun
11:42 PM solarwind: Flies, hmmm, yes
11:42 PM solarwind: We have those here
11:43 PM solarwind: They are highly irritating, but at least they do not kick the shins