#garfield Logs

Nov 20 2023

09:14 AM aandrew: ok I got my value out of X this morning
09:26 AM aandrew: engaged in some stupid canadaian politics thread and one of the guys was (literally) a student of Trudeau's when he was a teacher and prefixed his tweet with "as a former student". I said something about how you need to vote for policy not personality and how, as a former student, he shoudl know that
09:26 AM aandrew: he replied something to the effect of "Mr. Trudeau used to mark me down when I didn't show my work. I'm just returning the favour with his 8 years of poor budgeting and not showing his work."
09:26 AM aandrew: touché, Mr. Former Student, touché.
07:14 PM rue_shop3: arg, ma gets hard to talk to sometimes
07:15 PM rue_shop3: Tom_L, I suppose I should made up a cnc job for sotting the ends of the tubes :]
07:17 PM Tom_L: orientation would be the big thing
07:17 PM Tom_L: from end to end
07:19 PM Tom_L: not sure how you approach that now
07:19 PM Tom_L: and i haven't looked at a tube in quite a while either
07:21 PM Tom_L: it would be more difficult on long tubes
07:22 PM rue_shop3: I have jigs that we align on a table and they ride on the router guide
07:22 PM rue_shop3: square blocks
07:23 PM rue_shop3: so we can flip it 180
07:23 PM Tom_L: https://encrypted-tbn0.gstatic.com/shopping?q=tbn:ANd9GcQf39SGI71a1tGqZcYRVSnHSlCfSpHj39n1ZqEtmIcesMd9Q_PXe8CDVXw9vDV6Vv1DJH5OWvhImsRwmwGubLT4YeeAq7YHznI4k-RJk7MdvgTjNFZbuqGpdQ
07:23 PM rue_shop3: I need to slot 5 tubes and I have nowhere to set up the router :]
07:23 PM Tom_L: i would suggest getting one of those for the edges though
07:23 PM rue_shop3: I use the lathe
07:23 PM Tom_L: i pulled it out just now and they're rather sharp
07:24 PM rue_shop3: I wish they wouldn't get me so wound up
07:24 PM Tom_L: who?
07:25 PM rue_shop3: oh I need to put the blocks on before I can route them anyhow
07:25 PM Tom_L: an adjustable jig would be possible
07:25 PM rue_shop3: oh my dieing friend and his disasterous contractor, and my mom trying to put herself out of house and home to buy him an electric car that he cant get before he dies, cant drive and wouldn't want
07:26 PM rue_shop3: I could kinda make a reciever for what I use currently , but with a clamp
07:26 PM Tom_L: pics
07:34 PM Tom_L: make a fixture: pin pin pin pin for the different lengths
07:34 PM Tom_L: o o o o
07:34 PM Tom_L: then for the large slots
07:34 PM Tom_L: then use the right pin hole for alignment for the small slot after you rotate it 180 deg
07:35 PM Tom_L: the o o o pins would need a relief in them somehow to clear the tube part on the bottom that doesn't get machined
07:36 PM Tom_L: like an upside down L
07:36 PM Tom_L: the L could be a .o so it didn't rotate (small locating pin and a larger one to hold it)
07:37 PM Tom_L: so: .o .o .o o
07:38 PM Tom_L: the L could be a machined aluminum L that bolted into the various length tube locators
07:41 PM Tom_L: your router still may be the most efficient way
07:44 PM rue_shop3: :) images under way
07:45 PM Tom_L: it would be harder to make a fixture for the cnc due to the limited travel for the long tubes
07:45 PM Tom_L: not impossible
07:45 PM Tom_L: what do you cut the narrow slot with now?
07:46 PM Tom_L: that _could_ be done with the slot cutter i have but higher rpm would probably work better on that tubing or it might deform
07:46 PM rue_mohr: I use 2 cutters, both are 100% slot width
07:46 PM rue_mohr: (there are two slot sizes)
07:47 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1300006.jpg
07:47 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1300007.jpg
07:47 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1300008.jpg
07:47 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1300009.jpg
07:47 PM rue_mohr: there is a 15mm slot for the handle and head, and a .... ok I forgot, narrower slot for the lever to the head
07:48 PM Tom_L: what's the hole in the top of the plastic for?
07:48 PM rue_mohr: lock screw
07:48 PM rue_mohr: I put 4 in and rotate them as they wear out
07:48 PM rue_mohr: when all 4 are stripped it gets junked
07:49 PM Tom_L: gawd i bet that's noisy
07:49 PM rue_mohr: heh, spot on
07:50 PM Tom_L: so you cut the tube to length then finish one end then do the slot on the other end?
07:50 PM rue_mohr: the big clamp is for a shop-vac hose
07:50 PM rue_mohr: cut to length, clean and trim on lathe
07:50 PM rue_mohr: then those blocks, like that, then all the slots
07:51 PM rue_mohr: I do all the <size A> slots in all the ends they need to be, then switch bits and do all the <size B> slots
07:51 PM Tom_L: how do you clock it to do the bottom small slot?
07:51 PM rue_mohr: A being whatever bit is in there when I start
07:52 PM rue_mohr: see the 3 marks on the fence?
07:52 PM Tom_L: just flip the blocks over...
07:52 PM Tom_L: yeah
07:52 PM rue_mohr: square, just rotate the pipe
07:52 PM Tom_L: so it's not a super precision thing
07:52 PM rue_mohr: no
07:52 PM rue_mohr: hits it pretty good tho
07:52 PM Tom_L: i bet
07:52 PM Tom_L: specially with one pass
07:52 PM Tom_L: how many before a new cutter?
07:53 PM rue_mohr: still on the first cutter set
07:53 PM Tom_L: although that's a carbide cutter
07:53 PM rue_mohr: just have to try to control the feed really good
07:53 PM rue_mohr: yea
07:53 PM rue_mohr: its a burst cut, so not much change to heat up
07:55 PM Tom_L: i could make some aluminum blocks but to keep it from rotating in the cnc you'd need a better clamping system
07:55 PM rue_mohr: well, I could use that, but have a clamp lock down the pipe and let the machine move the head
07:56 PM Tom_L: have you ever had it try to rotate when pushing it into the router bit?
07:56 PM rue_mohr: use an end-stop for placing the pipe
07:56 PM rue_mohr: the blocks prevent that
07:56 PM Tom_L: ok,
07:56 PM Tom_L: make 2 aluminum holders like you have
07:57 PM Tom_L: make a 3rd split one to clamp with on the end making the first 2 square a bit smaller than the 3rd one so the 3rd one would clamp the end
07:57 PM rue_mohr: hmm
07:58 PM Tom_L: 2 1.25" square with holes and screw, 1 1.375" square
07:58 PM Tom_L: but
07:58 PM Tom_L: have the 2 offset so they aligh up and down for the 3rd one
07:59 PM Tom_L: for the height
07:59 PM rue_mohr: the bits are long enough to go straight thru
07:59 PM Tom_L: yeah but i bet they squeal more
07:59 PM rue_mohr: lower rpm
07:59 PM rue_mohr: than the router
07:59 PM Tom_L: how wide is the big slot?
07:59 PM rue_mohr: 15mm
07:59 PM rue_mohr: cant remember the small one
08:00 PM Tom_L: you think you could hit it with a 15mm bit on your cnc?
08:00 PM Tom_L: in one pass?
08:00 PM rue_mohr: I'd be inclined to do a 1/4" bit and have it U out for whatever size is needed
08:00 PM Tom_L: yeah
08:00 PM Tom_L: so you could use it for the bottom too
08:00 PM rue_mohr: then I dont need to be swapping bits
08:01 PM Tom_L: the only bit swap would be the slot
08:01 PM rue_mohr: hah, my NC feeder might needs tabs for different files
08:01 PM Tom_L: which i would use something like that key slot cutter i have
08:01 PM rue_mohr: their round bottom sl
08:01 PM rue_mohr: oh in the end
08:01 PM rue_mohr: I do them on a jigged up table saw
08:01 PM rue_mohr: 3 take like 4 seconds
08:02 PM rue_mohr: (it does 3 at a time)
08:02 PM rue_mohr: its one of those super cheap table saws
08:02 PM rue_mohr: its dedicated for it
08:02 PM rue_mohr: its keyd by the router slots
08:05 PM Tom_L: so it's the last cut you make
08:06 PM Tom_L: you could keep doing those that way probably
08:06 PM rue_mohr: heh, then I trim the bottom corners off with side cutter and sand it like it never happened
08:06 PM rue_mohr: I need to find a tarp to put down under the router, it gets chips everywhere
08:07 PM Tom_L: the blade pops the material out instead of cutting it off
08:07 PM rue_mohr: yup, I need to do it in two pinches to make sure it breaks off int he right place
08:07 PM Tom_L: so you want to keep that process?
08:07 PM rue_mohr: the belt sander fixes the shape and makes it all not matter
08:08 PM rue_mohr: I suppose cncing that would be nice
08:08 PM Tom_L: you may need a good vise for this
08:08 PM rue_mohr: did you see that one I welded up from angle iron?
08:08 PM Tom_L: and it would be super if you had a way to preset the tools
08:08 PM rue_mohr: that design is cool
08:08 PM Tom_L: no not that i recall
08:08 PM rue_mohr: oh
08:08 PM rue_mohr: I like the keep the jobs 1 tool
08:09 PM rue_mohr: those calibrated holders are $$
08:09 PM Tom_L: what holders?
08:09 PM Tom_L: oh for tools
08:09 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/cnc/p1100587.jpg
08:10 PM Tom_L: heh i recognize those
08:10 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/vise/slide.htm
08:10 PM Tom_L: how accurate?
08:10 PM rue_mohr: 7 peices of angle iron
08:10 PM rue_mohr: it came out really well
08:11 PM Tom_L: so you want to use that to hold these?
08:11 PM Tom_L: it's not big enough
08:11 PM rue_mohr: I got them parallel within a few thou
08:11 PM Tom_L: i doubt
08:11 PM rue_mohr: yea, but easy to make
08:11 PM Tom_L: i did that on my mill column too. was rather surprised
08:11 PM rue_mohr: I also have one HELL of a vise on that milling machine I bought
08:12 PM rue_mohr: It might be one step down from yours
08:12 PM rue_mohr: (the vise)
08:12 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Welding/Z_Column1.jpg
08:12 PM rue_mohr: as far as I'm concerned, I bought that milling machine for less than what the vise on it cost
08:12 PM rue_mohr: ;)
08:13 PM Tom_L: i probably spend a good hour tapping on those to make sure they aligned
08:13 PM rue_mohr: :)
08:13 PM rue_mohr: half the trick is keeping it that way while you weld it
08:13 PM rue_mohr: I compensated for the warp and got it pretty goo
08:13 PM rue_mohr: d
08:13 PM Tom_L: i learned not to do a solid bead
08:14 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Welding/Column_Supports2.jpg
08:14 PM Tom_L: final welds holding it
08:14 PM Tom_L: front & back
08:14 PM Tom_L: i just wish i'd have made it taller
08:15 PM Tom_L: ok, so maybe 3 offset squares and one clamp
08:15 PM Tom_L: 2 to fit in the vise per end and one on the far end
08:15 PM Tom_L: then the 2nd one slide down the tube when you swap ends to hold in the vise
08:16 PM Tom_L: making sure it's squared up again
08:16 PM Tom_L: seems like alot of fixturing for the little cutting done
08:19 PM Tom_L: you would locate the cuts from the end of the tube against the end of the vise
08:19 PM Tom_L: i run a flat bar across the end of my vise and locate to that all the time
08:20 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A12_New/A12_P1_1.jpg
08:21 PM Tom_L: that short block is located on the right edge of the vise in the beginning
08:21 PM Tom_L: (i think)
08:21 PM Tom_L: that or it butts against the left where the 2 reliefs are cut
08:21 PM rue_shop1: how much taller would you go?
08:22 PM Tom_L: for what?
08:25 PM Tom_L: see, you have the wood block holding the tube from moving too
08:25 PM Tom_L: 1300008.jpg
08:27 PM rue_shop1: up
08:27 PM rue_shop1: how much farther up would you go if you did it again?
08:27 PM Tom_L: i don't follow what you mean by up
08:28 PM Tom_L: for the tubes or A12? i lost you
08:31 PM Tom_L: the problem with moving the cutter and not the tube is you have to hold the tube secure. as you cut the slot the fixture will become looser
08:32 PM Tom_L: you would likely have to clamp it past where the cut stops to hold it secure
08:32 PM Tom_L: the tube will vibrate when you cut it then
08:32 PM Tom_L: probably not enough to snap a 1/4" cutter
08:33 PM Tom_L: unless you made a rather long clamp around the tube
08:34 PM Tom_L: 2 piece clamp like your blue half or a printed U that held the 2 halves together but still allowed for clamping
08:42 PM rue_shop1: catching a bit of sleep
08:42 PM rue_shop1: did;t get much last night,
08:42 PM Tom_L: making a clamp profile for you to see
08:42 PM VanUnamed: hwhat is rue_shop1 doing in the shiop??
08:42 PM rue_shop1: doesn't help much haivng ma ream me out after I got home
08:43 PM rue_shop1: I'd like to be doing something cool , but I cant clear my head and focus
08:45 PM rue_shop1: to survive I need to start making exponential progress
08:45 PM rue_shop1: but my energy has been linerly tapering off
08:46 PM rue_shop1: I'v been spending some of my time trying to find my roots
08:46 PM rue_shop1: I'm kinda on the trail, but nothings located yet
08:46 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/tube_clamp.jpg
08:47 PM Tom_L: a profile like that maybe 4" long
08:47 PM Tom_L: printed then you can clamp that in the vise
08:47 PM rue_shop1: hmm
08:47 PM Tom_L: then the tube can rest on the bottom of it
08:47 PM Tom_L: and you can use the other ones like you have to square it up
08:48 PM Tom_L: then just move that from one end to the other
08:48 PM rue_shop1: I dont' mind if it only does one end
08:48 PM rue_shop1: at a time
08:48 PM Tom_L: it would
08:48 PM rue_shop1: two programs, end A and end B
08:48 PM Tom_L: but the other squares would keep them aligned like you do now
08:48 PM rue_shop1: :)
08:48 PM Tom_L: program A can do both ends
08:49 PM Tom_L: just stop it before program A does 2 small slots
08:49 PM Tom_L: does grbl honor M0 M1?
08:49 PM rue_shop1: yea, they both do a big slot, one end just does a smaller slot in the back too
08:49 PM Tom_L: add that so the operator has to intervene before the last slot is cut
08:49 PM rue_shop1: it does, my spooler doesnt
08:50 PM Tom_L: FIX IT DAMMIT!!!
08:50 PM rue_shop1: but I think it would be easy to make two program tabs
08:50 PM rue_shop1: and select the tab and run the program in that tab
08:50 PM Tom_L: the part would locate off some stop off the vise end
08:50 PM rue_shop1: yup
08:50 PM Tom_L: possibly 90 deg from either slot
08:51 PM Tom_L: so it's out of the way
08:51 PM Tom_L: you printed those other holders right?
08:51 PM rue_shop1: ever used those toggle camps on a jig?
08:51 PM rue_shop1: yup
08:51 PM Tom_L: print a clamp similar to what i showed here and let the tube rest on the bottom of it
08:52 PM Tom_L: not sure what clamps you mean
08:52 PM Tom_L: like visegrip geometry?
08:52 PM Tom_L: i forget what those are called
08:52 PM Tom_L: but no
08:52 PM rue_shop1: hmm
08:52 PM Tom_L: https://encrypted-tbn1.gstatic.com/shopping?q=tbn:ANd9GcTN3SrrkE7Ay_O6hwDzpnBSH4gW8-NZ6i373rjcS-tTOCSvXlX4t4jS8quOd59cATZw7XITqh87gn_Q5laOIzNmnEZGGgMinvMuxCCoI50rk-0quveKebx8Ew
08:52 PM Tom_L: those?
08:53 PM Tom_L: do the tubes the same as you do now but print that 4" clamp for the vise and write a cnc program
08:53 PM rue_shop1: yup
08:54 PM rue_shop1: yes - the clamp
08:54 PM Tom_L: i've not used them for cnc yet
08:54 PM Tom_L: you could
08:55 PM Tom_L: there's all sorts of clamps. toe clamps, cam clamps ^^ those etc etc
08:55 PM Tom_L: edge & toe
08:57 PM Tom_L: see, if you had a _good_ vise i'd make that profile i showed you as a split (2 piece) clamp
08:58 PM rue_shop1: easy to print
08:58 PM Tom_L: something nice and square and clamps evenly type vise
08:58 PM rue_shop1: I could probably even add a little metal tooth
08:58 PM rue_shop1: https://components101.com/sites/default/files/inline-images/Slow-Blow-Fuse-Graph.jpg
08:58 PM Tom_L: it would be easier to print than machine
08:59 PM rue_shop1: thinking of the hexapod robot I built
08:59 PM rue_shop1: try to fit in play time too
09:00 PM Tom_L: i think cncing those tubes would be slower than how you do it to be honest
09:00 PM Tom_L: you must have a reason for wanting to change it
09:00 PM rue_shop1: hard to flush my head of ma being angry at me cause I wont mortgage my house to buy an electric car for my dieing friend that wouldn't arrive in time and he could never drive
09:00 PM Tom_L: don't do it
09:01 PM rue_shop1: no
09:01 PM rue_shop1: but she things I'm scum for not doing it
09:01 PM Tom_L: sounds like tunnel vision and set in her ways
09:01 PM rue_shop1: and her mind is going and she's going to phone me tommorow and have the same conversation
09:01 PM Tom_L: not if you don't answer
09:02 PM rue_shop1: I dont want to be mean to her
09:02 PM rue_shop1: she wont know why
09:02 PM Tom_L: but what is she doing to you?
09:02 PM rue_shop1: just words
09:02 PM Tom_L: well take them with a grain of salt then
09:02 PM rue_shop1: still hard to get them out of my head
09:03 PM rue_shop1: https://components101.com/sites/default/files/inline-images/Fast-Acting-Fuse-Graph.jpg
09:03 PM rue_shop1: looks like I can have the overload severly ramp up the rating under 1s
09:04 PM rue_shop1: the goal is to keep the current under 1A
09:04 PM rue_shop1: as that much current borders stripping the gearbox
09:04 PM rue_shop1: but I made a system so fast, it trips on one PWM pulse
09:05 PM rue_shop1: *sigh*
09:05 PM rue_shop1: and I cant get any cool progress done casue I'm project thrashing so bad
09:05 PM rue_shop1: I need a catalyst to keep me focused
09:07 PM * Tom_L puts a roman candle under rue_shop1's arse
09:07 PM rue_shop3: twitter provides some cool distractions
09:08 PM Tom_L: twitter is history
09:08 PM Tom_L: failing badly isn't it?
09:08 PM rue_shop3: yes, but still
09:08 PM rue_shop3: its seams are tearing
09:08 PM rue_shop3: but there are a lot of seams
09:09 PM Tom_L: hang on until the parachute falls out of the sky then
09:09 PM rue_shop3: http://ruemohr.org/%7Eircjunk/tempimage/p1290997.jpg
09:09 PM Tom_L: nothing social is what it used to be
09:09 PM rue_shop3: did you see the fun I had with the CPLD VGA thing>?
09:09 PM Tom_L: saw those yes
09:10 PM rue_shop3: thats a monostable with vootlage from the signal generator injected
09:10 PM rue_shop3: times from the Hsync
09:10 PM rue_shop3: when the monostable trips, the CPLD draws a dot
09:12 PM Tom_L: i should get the mill out and do _something_
09:12 PM rue_shop3: its hard without a target
09:13 PM Tom_L: i really don't need anything from it
09:13 PM rue_shop3: yea, I have some frustrationt hat I have ll these machiens idle
09:14 PM Tom_L: fires don't flare up like they used to
09:15 PM Tom_L: it helped the kids get started in a career path at least
09:15 PM Tom_L: now you've seen what they run
11:34 PM rue_mohr: I look back on a lot of silly projects that esablished a lot of awesome groundwork