#linuxcnc Logs

Mar 10 2022

#linuxcnc Calendar

01:37 AM Deejay: moin
03:37 AM Loetmichel: *giggle* $me: "/("§$/&§$! Ouch, burned my hand again" Coworker: "Was about time if not overdue. last time i heard you cussing about that was already a couple days..." :)
04:46 AM JT-Cave: morning
05:09 AM Tom_itx: morning
07:45 AM silopolis[m]: Hey folks 😊
07:47 AM silopolis[m]: Is it normal that a 7i74 board appears as a 7i73 in halcmd show output?
07:48 AM silopolis[m]: pcw---home: ^^?
07:58 AM JT-Cave: 7i74 is transparent and no pins
08:19 AM unterhaus_: is there a 7i73 hooked up to the 7i74?
08:20 AM JT-Cave: there must be a 7i73 on the smart serial bus to show the 7i73 pins
10:28 AM silopolis[m]: <JT-Cave> "there must be a 7i73 on the..." <- Good catch! That was a misunderstanding with my friend 😅 He had the 7i73 hooked up and up 😁
10:29 AM silopolis[m]: <JT-Cave> "7i74 is transparent and no pins" <- You mean it won't appear in the output to send you?
10:51 AM t4nk_freenode: Loetmichel, .... really... it's kind of a miracle you've gotten as old as you have already man.. I mean for a man chopping off his own head on a regular basis and all ;)
01:37 PM incal: o/ the f-engrave stuff worked, got nice gcode and executed it on the CNC!
01:38 PM incal: don't like the f-engrave GUI tho, not just that it's a GUI in general, it is a half-lousy GUI at that
01:38 PM incal: I take it this means text engrave is not a function included in LinuxCNC?
01:38 PM incal: (see backlog)
01:39 PM XXCoder: lcnc is not cam basically so no
01:40 PM incal: OK
01:45 PM roycroft: there are a myriad of engraving software packages, many of which are open source
01:45 PM roycroft: there is, rather
01:45 PM roycroft: f-engrave was mentioned because it's known to work well with linuxcnc and seems to be the most popular engraving package amongst the users here
01:45 PM roycroft: but feel free to try out any of the others
01:46 PM roycroft: i mentioned yesterday that openscad has some engraving capabilities, and that might suit you better, as it's non gui-based (although it does have a gui front-end)
01:46 PM roycroft: openscad is also known to work well with linuxcnc
01:47 PM roycroft: i don't recall the details of how folks do that offhand, though
01:49 PM roycroft: linuxcnc is not about generating gcode, for the most part
01:49 PM roycroft: it's about executing gcode
01:52 PM solarwind: What would be the tool to spread apart retaining clips that don't have holes for retaining ring pliers?
01:53 PM solarwind: https://da.lowes.ca/webassets/images/138783_09059843_001_l.jpg <-- that one has holes in it, but imagine if it didn't
01:53 PM solarwind: https://glhblob1.blob.core.windows.net/images/Illustrations/PHL-C-SS.jpg <-- it looks more like this
01:56 PM solarwind: Hmm, a fun prank would be to weld the snap ring on your neighbour's equipment haha
01:56 PM solarwind: An expertly crafted, beautiful TIG weld all the way around the ring
02:23 PM enleth: solarwind: some of them, if used properly, can be manipulated to reveal a gap between the thinner part of their circumference and the shaft, to wedge a flathead screwdriver into and lever them off
02:24 PM enleth: also, the hole-less ones tend to have a larger opening, so they can be pushed off with the shaft itself acting as a spreader
02:25 PM enleth: a piece of hardened shim stock with a relief for the shaft ground into the edge makes for a nice pushing tool
02:28 PM enleth: solarwind: if you got one that has no holes, nowhere to put a screwdriver in and a gap too small to easily push it off, I guess what you can do is ponder how the fuck someone managed to get it on there
02:29 PM enleth: and then notch it with a dremel on the side opposite the gap, to give yourself a fighting change trying to spread it with a large flathead pushed into the gap
02:29 PM roycroft: i don't think he's talking about trying to remove an existing one
02:30 PM roycroft: he's talking about pranking someone by "invisibly" welding it on so that it cannot be removed
02:32 PM enleth: roycroft: I think that thought came later, he just asked about spreading those stupid things first
02:32 PM roycroft: perhaps i missed that
02:32 PM * roycroft misses a lot, it seems
03:28 PM Loetmichel: t4nk_freenode: well, to my knowledge my head is still firmly attached to my neck. No idea where you get THAT idea from. I just tried to measure the voltage of a 12V SLA battery with the Multimeter still on the 10A setting... took the probe tip mere milliseconds to get red hot ;)
03:33 PM t4nk_freenode: set your multimeter to cynisism/sarcasm, and take another reading of my head-removal-remark ;)
03:52 PM Loetmichel: t4nk_freenode: i meant: yeah, kinda clumsy. but no real BAD injuries so far ;)
04:08 PM t4nk_freenode: well, to be fair.. I'm kind of the same
04:09 PM t4nk_freenode: I can't solder without soldering my hands, power-glue without gluing myself, .. drive screws without perforating my hands
04:09 PM t4nk_freenode: ..saw.. or, as it turned out.. operate a mill without milling myself.
04:10 PM roycroft: i hope you never attempt to operate a table saw
04:10 PM roycroft: or a tig welder
04:10 PM t4nk_freenode: I did try welding as a small kid once.. made a nice big hole ;)
04:10 PM roycroft: or a motor vehicle, for that matter, as that would entail driving over yourself
04:11 PM roycroft: which usually does not go well
04:11 PM t4nk_freenode: I've had a Zündapp when I was young.. many accidents, yes
04:12 PM t4nk_freenode: and indeed.. drove over myself at least once, no kidding :))
04:12 PM * roycroft generally recommends not doing tht
04:12 PM roycroft: that
04:14 PM t4nk_freenode: (it wasn't that bad, really, it's quite manageable, only broke my wrist that time)
04:17 PM Loetmichel: well... shit happens. and i am there wit you with the CNC mill
04:17 PM Loetmichel: BTDT ;)
04:18 PM Loetmichel: ... have the xray to prove it: http://www.cyrom.org/palbum/main.php?g2_itemId=2958&g2_imageViewsIndex=1
04:19 PM Loetmichel: 3mm two flute at 24kRPM... didnt even register it at first, just noticed that my thumb was stuck to the spindle ;)
04:19 PM t4nk_freenode: lol
04:20 PM Loetmichel: roycroft: does giving yourself a "tonsure" with a MAG welder under a car count?
04:21 PM Loetmichel: (about a coin sized "drop" of liquid steel dropped on my head while welding ;)
04:23 PM roycroft: ouch
04:27 PM roycroft: i'm taking fridays off for five weeks again starting tomorrow
04:27 PM roycroft: so today is friday!
04:27 PM roycroft: and it's going to be sunny and 17 degrees tomorrow
04:28 PM roycroft: perfect for starting to clean up the garden beds
04:28 PM XXCoder: did you forget that complex wood prodict you was going to make for me?
04:28 PM XXCoder: 3 or 4 fridays from what I recall
04:28 PM roycroft: i must have
04:28 PM roycroft: i am old and forgetful
04:28 PM XXCoder: lol
04:28 PM roycroft: especially when it is convenient to be so
04:41 PM unterhaus_: lowes just excluded consumables like lumber from the military discount. FB woodworking groups are going to be unbearable for a while
04:43 PM roycroft: i don't understand why stores offer military discounts in the first place
04:44 PM roycroft: and i'm not anti-military, but i don't see military service as any different to being a peace officer, or a nurse in an urban er, or any of a number of other professions
04:45 PM XXCoder: to me its excuse they use to give solders shit pay
04:45 PM roycroft: i suppose a big difference is that this country asks a lot of its military and then treats vets like shit when they return
04:45 PM roycroft: but we should fix the va, not count on the charity of the private sector to fix that
04:46 PM roycroft: anyway, without getting into it more, yeah, i can imagine fb groups going crazy over it
04:46 PM roycroft: yet another reason i'm happy i avoid facebook like the plague :)
04:53 PM unterhaus_: it's just marketing, and they know us vets are cheap bastages
04:54 PM unterhaus_: just like old people
04:58 PM roycroft: i'm not cheap
04:58 PM roycroft: i'm frugal
05:11 PM unterhaus_: 50% of the retail price on most things is markup, so taking 10% off is nothing. It's when they take more than 50% off of things that they are taking a loss
05:15 PM roycroft: sort of
05:15 PM roycroft: you're talking about gross margin
05:16 PM roycroft: but the overall point is true - they still make money, even after the discounts
05:18 PM roycroft: and i'm on vacation now
05:18 PM roycroft: yay!
05:18 PM unterhaus_: congrats
05:19 PM unterhaus_: I think they are excluding consumables because the margin is lower sometimes. They eat some of the upward price swings
05:22 PM roycroft: timber prices are still quite volatile
05:22 PM roycroft: i have a lowe's credit card, and get 5% off everything when i use that
05:22 PM roycroft: there's not much i ever buy at lowe's though - it's not the highest quality stuff
05:23 PM roycroft: but they have good prices on sheet goods, and a better variety of rattle can paints than other stores in the area
05:24 PM roycroft: and i actualy don't need the lowe's card any more - i got a citi "custom cash" card a while back that gets me 5% rewards on whatever i buy in the biggest category i spend in each month
05:24 PM roycroft: i use it exclusively at home improvement stores, so i get the 5% back on everything
05:25 PM JT-Shop: https://gnipsel.com/images/wood-working/table-top/table-top-02.jpg
05:25 PM JT-Shop: fresh T&T Varnish Oil... not bad for scrap wood
05:27 PM roycroft: yeah, that looks good
05:27 PM roycroft: the top i made for the equipment rack i want to install asap
05:27 PM roycroft: but i only applied the tried and true yesterday - it really needs at least another day to cure before i haul it over there
05:28 PM roycroft: it will live in a cool, humid basement
05:28 PM JT-Shop: the strips of red oak are all various widths
05:28 PM roycroft: the one i made is oak plywood with beechwood edging
05:28 PM JT-Shop: this table top is for a work bench that has a MDF top that's been wet
05:29 PM JT-Shop: I could have used 3/4" plywood but wanted to practice my glue up technique for multiple strips of wood
05:32 PM roycroft: i wanted to make this as quickly as i could
05:34 PM roycroft: it's funny we each made something very similar, and both made it too fancy for the intended purpose
05:34 PM roycroft: https://roycroft.us/RackTop.jpeg
05:34 PM roycroft: there's mine
05:34 PM roycroft: sorry about the crappy picture
05:35 PM roycroft: i just took a quick snap in situ where it's curing - in a warm room
05:35 PM XXCoder: that looks nicely done
05:35 PM roycroft: i did not attempt to seal the pores or anything
05:35 PM roycroft: it looks nice from a distance
05:35 PM roycroft: not so much close up
05:35 PM roycroft: but it's going to live in a dark basement
05:36 PM roycroft: so it will look fine :)
05:36 PM JT-Shop: nice
05:37 PM roycroft: they are expecting nothing
05:37 PM roycroft: so they will be fine with what i deliver
05:37 PM roycroft: at least they had better be fine with it
05:38 PM roycroft: i should have embedded spikes in the top of it
05:38 PM roycroft: i don't want people piling a bunch of crap up on the top of the rack
05:38 PM roycroft: but better on that lid that i made than directly on the servers
05:40 PM roycroft: your oak strips have more character than my oak plywood
05:55 PM JT-Shop: I was surprised at the character of the finished part
06:22 PM roycroft: it came out really nice
06:26 PM roycroft: i'm trying to decide whether to get a new track saw
06:26 PM roycroft: i don't use mine often, but it is rather underpowered
06:27 PM roycroft: the new version goes on sale in a few weeks, and the blade is 1.8mm thick vs. the 2.3mm that my current one has, and it spins twice as fast
06:27 PM roycroft: resulting in much greater effective power
06:28 PM roycroft: it is $600, but since my current one is festool as well, and lightly used, i can probably get close to $500 for it
06:45 PM CloudEvil: have you considered fitting the narrower blade to your existing saw?
06:49 PM roycroft: that would not work
06:50 PM roycroft: it would mess up alignment with the track, but more importantly, the saw has a riving knife
06:50 PM roycroft: the blade cannot be thinner than the riving knife
06:51 PM roycroft: and even if i were to grind the riving knife so that it's the same thickness as the thinner blade, it would still spin at half the speed of the new version
07:04 PM Tom_itx is now known as Tom_L
07:13 PM CloudEvil: Ah yes, I had not considered the riving knife.
08:25 PM _unreal_: t4nk_freenode, ignoring? hardly. more like I was watching a movie with my daughter.
11:05 PM solarwind: enleth thanks for the information, I got it off
11:05 PM solarwind: You were right
11:05 PM solarwind: But how they get it on is easy to answer. Just push it on with enough force and it spreads itself
11:05 PM solarwind: once it's on there, there isn't enough to grab onto to get it off
11:06 PM solarwind: Technically you can pull it off from the opposite end of the opening (the same end used to push it on), but you need enough clearance for pliers, etc.
11:07 PM solarwind: An analogy could be "tamper proof" screws where the head is designed to turn one way and cams out if you turn it counterclockwise
11:07 PM solarwind: Last resort would be to spot weld some metal to it with my precision spot welder and just pull it off, but what a nuisance
11:08 PM solarwind: ---
11:08 PM solarwind: Unrelated question: I have some brass pipe fittings that I'm going to braze together because of size restrictions, etc.
11:09 PM solarwind: Now RBCuZn-C brass gas brazing rods melt at about the same temperature as brass (duh)
11:09 PM solarwind: The rods have zinc in them and so do the brass fittings. What's the best way to join them?
11:10 PM solarwind: I guess at this point, it's technically welding since the base metal is indeed welding.
11:10 PM solarwind: This is for a VERY low pressure application, like less than 1 psig. Specifically low pressure propane going into the mixer of an engine. So mechanical strength is a non issue
11:11 PM solarwind: Plumbing solder would do the trick I guess? I can just machine the parts so they fit kind of like copper pipe and just solder them.
11:11 PM solarwind: But would be cool to weld them. Should I oxy acetylene or TIG?
11:12 PM solarwind: Or is there some other brazing filler I'm not aware of that's useful for yellow brass