#garfield Logs

Feb 11 2025

01:08 AM rue_mohr: damnit, I cant sleep, I need at least _1_ happy thought
01:25 AM rue_mohr: stuff like being on the virge or rump trying to take over canada does NOT help me rest
01:25 AM rue_mohr: -3.5c out, furnace is working like crazy
01:25 AM rue_mohr: I need a happy thought
01:25 AM rue_mohr: damnit
05:29 AM polprog: -5 in the morning today
07:53 AM rue_mohr: -4 here
07:54 AM rue_mohr: hmm twitter is going crazy with my cnc
12:03 PM polprog: it sometimes happens
03:51 PM Tom_L: gee i can see all the way thru it!
03:51 PM Tom_L: and spot a top on the other side
03:52 PM rifraf: aandrew cheers, where on this earth are you based?
03:52 PM rifraf: Tom_L yep could drop right through
03:52 PM rifraf: id is 70mm, alot of material gone
03:53 PM Tom_L: hope the bearing seats are snug
03:53 PM rifraf: yeah left a little polishing to do when i gues them
03:54 PM rifraf: the thrust bearings sit pretty well though when snugged up
03:54 PM rifraf: 2.2kg left of this block, more than 1/2 material removed, wat a waste
03:55 PM Tom_L: too bad you couldn't punch a round out of it :)
03:55 PM rifraf: thought that a few times while boring away
03:56 PM Tom_L: ^ he's a canuck but living in Calif atm
03:56 PM rifraf: i see
03:57 PM Tom_L: on the far side from rue iirc
03:57 PM rifraf: well better look at some square bar for these moving arms
03:57 PM Tom_L: no plate cutoff you can use? i don't remember what they looked like
03:57 PM rifraf: got enough for 1 at least
03:59 PM Tom_L: shame you're not here, you'd be at the scrap yard every day
03:59 PM Tom_L: i think i showed you that
03:59 PM rifraf: they start with a bit of 5/8" square bar
03:59 PM rifraf: or 16mm for us over here
03:59 PM rifraf: not sure if i have 16mm plate
04:00 PM rifraf: lost access to my metal source
04:00 PM Tom_L: my steel scrap source is gone
04:00 PM Tom_L: glad i finished the mill when i did
04:00 PM Tom_L: they closed
04:01 PM rifraf: always steel around here still, many places i can go to get new stuff at least
04:43 PM rifraf: this old bar i used for beating out microwave transformer windings has just enough left
04:43 PM rifraf: https://imgur.com/a/qFnhjF3
04:47 PM rifraf: good parts to test out electro vice with
04:48 PM Tom_L: yup
04:49 PM rifraf: 2 face with somewat reduced on one part to fit the transformer core easier, but have to reduce parts on one end anyway so they will be fine
04:51 PM Tom_L: i keep all my scrap... to a fault
04:52 PM Tom_L: what ever happened to the bear?
04:52 PM rifraf: often wondered, but never saw again
04:55 PM rifraf: at least i learned good ways to mark out steel at last job, take more care now in how its done
05:37 PM rifraf: that was a satisfying drill experience for sure, being able to micro adjust position and then tap pedal when ready
05:37 PM rifraf: turn off drill for drill bit changes and vice holds part perfectly through all 3 sizes, holes line up perfectly in 2 parts
06:59 PM rifraf: test linkages made, hrm now what
07:03 PM * rifraf notices that its actually beer o'clock
07:09 PM rifraf: a few moments later.. https://i.imgur.com/vBhjASG.jpeg
07:11 PM rifraf: to be final shaped as required when testing
07:22 PM rifraf: https://i.imgur.com/vBhjASG.jpeg did i post that? seems i been talkin to myself for a while
07:24 PM Tom_L: yup
07:26 PM rifraf: Tom_L you will notice one end has big hole and looks like thin wall, wall is about 1/8", bit more
07:27 PM rifraf: that end goes onto cylinder, i reckon it will handle 0.5kN
07:27 PM Tom_L: looks ok
07:27 PM rifraf: the other end had the leverage, and will get to 5kN or so
07:29 PM rifraf: the 8mm hole is the pivot point
07:30 PM rifraf: what you think?, i reckon the business end thats moves slipring would fail before the cylinder 10mm hole end?
07:31 PM Tom_L: probably
07:31 PM Tom_L: i'm just concerned about friction on the ring
07:31 PM rifraf: would be great for some FEA, i should make the time
07:31 PM rifraf: then should be 1mm clearance
07:31 PM rifraf: putting a 8mm lever in a 10mm slot
07:32 PM Tom_L: i guess it won't pull unless it's stopped
07:32 PM Tom_L: those other examples used a thrust bearing
07:32 PM rifraf: and should be pretty adjustable , and make to stay adjusted with lock washers, that will also allow minimal friction of the slipring between the round locknuts
07:33 PM rifraf: i will add interlocks yes, but am happy to see it fail in testing
07:33 PM Tom_L: will you have to adjust it every collet change?
07:33 PM rifraf: i have 2 thrust bearings, supporting the shaft, where else?
07:34 PM rifraf: i will have to adjust yes, but only using 2 or 3 sizes of stock, will be rare
07:34 PM Tom_L: i was talking about a thrust bearing as the release mechanism
07:34 PM Tom_L: like in the manual one i posed last
07:34 PM rifraf: hrm ok, where abouts, can you mark up one of my posts?
07:35 PM rifraf: i think i was still not sure on that design, lack of understanding
07:35 PM Tom_L: give it a go
07:36 PM rifraf: man i wish i remembered fea, this is a perfect case with all known forces
07:36 PM rifraf: this should show recent images https://imgur.com/user/RifRaf2001/posts
07:45 PM Tom_L: https://youtu.be/IVvjzJUFweU?t=856
07:49 PM Tom_L: https://www.youtube.com/watch?v=etmIynWERXQ
07:49 PM Tom_L: that one even speaks your language :)
07:53 PM rifraf: heh :)
07:54 PM Tom_L: https://www.google.com/maps/@23.7010566,-91.2699841,5.87z?entry=ttu&g_ep=EgoyMDI1MDIwOS4wIKXMDSoASAFQAw%3D%3D
07:54 PM Tom_L: interesting map change
07:55 PM rifraf: ok i did that that aussie one recently, rewatching
07:55 PM rifraf: lol is that for real
07:55 PM Tom_L: yup
07:55 PM Tom_L: he signed it flying over the gulf on his way to the superbowl
08:46 PM rue_mohr: us canadians are boycotting us goods
08:47 PM rue_mohr: probably forever
08:47 PM rue_mohr: as rump is going to make himself dictator
08:47 PM rifraf: there goes to good ol usa
08:47 PM rue_mohr: yep
08:48 PM rifraf: rue look more bits made above
08:48 PM rifraf: trying to do an FEA, well starting to try
09:06 PM aandrew: rifraf: usually in Ontario in Canada but been in southern california for the last 18mos
09:51 PM rifraf: aandrew cool, down in the US for work or fun?
09:59 PM rue_mohr: wow look at that usd crash
10:03 PM rue_mohr: the price of gold is, falling?
10:03 PM rue_mohr: hu?
10:07 PM rifraf: where do you get your news?
10:10 PM rue_mohr: I think I got the numbers reciprocated :]
10:37 PM aandrew: rifraf: work
10:38 PM aandrew: I'm here on a TN visa, hoping to get my green card but it could be a bit of a challenge with everything going on