#garfield Logs

Jul 01 2021

01:55 AM rue_shop2: oh I should drill the clamp I made
02:34 AM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1200129.jpg
02:34 AM rue_mohr: that came out nice
08:22 AM rue_mohr: it didn't cut clear thru
08:22 AM rue_mohr: should have by 0.5mm
09:42 AM rue_mohr: polprog, you dont really want to turn up the high voltage...
09:54 AM polprog: I marked it, didnt move the knob at all eventually
09:54 AM polprog: so its the same
09:58 AM polprog: maybe i thought its dim because it was sitting on the window
09:58 AM polprog: or i turned the eht just a little bit up actually. anyway, it's ok
10:46 AM rue_shop7: iirc dim is usually from a failing flyback
11:19 AM rue_shop2: Tom_L, morning
12:53 PM Tom_L: afternoon
01:08 PM Tom_L: rue_mohr, and that's why i don't really rely on foil cuts
01:08 PM Tom_L: and if you get em too thick it leaves a shitty edge
02:54 PM rue_mohr: yea, I dont like the foil thing
03:27 PM rue_shop7: canada day, office is closed
03:27 PM rue_shop7: slept a lot...
03:28 PM rue_shop7: my faceplate idea for the battery welder is a fail
04:03 PM Tom_L: yeah i just woke up
04:03 PM Tom_L: dunno why i was so tired
04:04 PM Tom_L: maybe i'll work on cad in a while
04:13 PM Tom_L: had to go out of town today and it rained all day
04:39 PM rue_shop7: huh
04:39 PM rue_shop7: we get all the hot stuff and its raining over there
04:45 PM Tom_L: maybe some tea will wake me up
05:31 PM rue_shop7: Litton burned down
05:31 PM rue_shop7: Rome didn't fall in a day
05:39 PM Tom_L: that up by you?
05:40 PM rue_shop7: not by a lot
05:41 PM Tom_L: so what did you decide for a lost pla part?
05:41 PM Wings: Yeah I had the heatwave at the same time Lytton had it.
05:41 PM Wings: But it was about 10C cooler here.
05:45 PM rue_shop7: Tom_L, Its still rolling around in the back of my head
05:45 PM rue_shop7: it could be anything
05:46 PM Tom_L: kid came home today and said he'd been working on some classified experimental parts for boeing
05:47 PM Tom_L: one part and they took it and scrapped it
05:48 PM Tom_L: so now they're making another one from the ONLY piece of that type of aluminum in the US
05:51 PM Tom_L: he's doing the roughout of it and his boss said he'd do the finish pass in case somthing went wrong he wouldn't get fired
05:52 PM rue_shop7: :S
05:52 PM Tom_L: some special 70 series alloy
05:53 PM Tom_L: but these are big blocks, like won't fit in your truckbed big
05:56 PM Tom_L: rue_mohr, try your snowflake :)
05:58 PM rue_shop7: maybe workplace stress is the factor I'v been trying to understand
06:03 PM rue_shop7: yea, I dont like billot engineers
06:04 PM rue_shop7: stuff shouldn't be made like that just cause the cad is easier
06:38 PM Tom_L: grain direction is a major contributing factor in design
06:38 PM Tom_L: you don't get that with cast parts
06:38 PM Tom_L: forgings yes
06:38 PM Tom_L: but those take time and alot of money
06:38 PM Tom_L: for experimental that's out
06:40 PM rue_shop7: the billot was forged?
06:40 PM Tom_L: no
06:41 PM Tom_L: they always do experimental from solid blocks
06:41 PM Tom_L: until the design is proven they don't want to make any major tooling
06:41 PM rue_shop7: making progress on the z axis for my 4'x8'
06:41 PM Tom_L: nice
06:41 PM Tom_L: i haven't done squat yet
06:41 PM rue_shop7: looks like I'm going 5/16" for leadscrew
06:42 PM Tom_L: i think the part is programmed though, just need to fix up the fixturing
06:42 PM rue_shop7: Tom_L, you been doing a lot latley, a break sounds fair
06:42 PM rue_shop7: need to work out how to secure the lead screw next
06:42 PM Tom_L: how long?
06:42 PM rue_shop7: the sliders seem plausable
06:43 PM rue_shop7: about 6.5"
06:43 PM Tom_L: turn the nut, not the screw
06:43 PM Tom_L: less whip
06:44 PM * Tom_L giggles
06:44 PM Tom_L: that's gonna take a week to home
06:44 PM rue_shop7: hah no
06:44 PM rue_shop7: I'm using high speed motors
06:44 PM rue_shop7: DC
06:45 PM rue_shop7: flapping wont be an issue
06:45 PM Tom_L: you can only spin a 6' shaft so fast before it will whip right off the machine
06:45 PM rue_shop7: not over 6 inches
06:45 PM rue_shop7: "<- inches
06:45 PM Tom_L: mmm
06:45 PM Tom_L: i read that as feet
06:45 PM Tom_L: yeah
06:45 PM Tom_L: i got that much ballscrew left over
06:45 PM rue_shop7: :) you people and your imperial
06:45 PM Tom_L: get a carrier and it's yours
06:45 PM rue_shop7: I have a ballscrew, but thrust locking one end would by MUCH harder
06:46 PM rue_shop7: and, harder to replace in a pinch
06:46 PM Tom_L: iirc i got 16mm ones
06:46 PM Tom_L: and 20mm slides
06:46 PM Tom_L: and i'm glad i didn't go smaller
06:47 PM rue_shop7: I have some larger rod I'd like to use, but I dont have any fittings for it
06:47 PM Tom_L: you got a lathe
06:48 PM * Tom_L grabs the rest of the tea and fires up the cad station
06:48 PM rue_shop7: oh, my race cages for thrust bearings fit 5/16 too
06:49 PM rue_shop7: I know
06:49 PM rue_shop7: I should be making acme thread right?
06:49 PM rue_shop7: cant do a nut tho
06:49 PM Tom_L: i would
06:49 PM Tom_L: sure you can
06:49 PM Tom_L: you can get em anyway
06:49 PM rue_shop7: $$$$$$$$$$$$$$
06:49 PM Tom_L: not so much
06:49 PM rue_shop7: an ACME tap?
06:50 PM rue_shop7: they are big time ouch
06:50 PM Tom_L: how many tpi?
06:50 PM rue_shop7: any
06:50 PM Tom_L: guy in linuxcnc made a tap for his
06:50 PM rue_shop7: I'd be surprised if you can even find a 1/4" one for less than like $60
06:50 PM rue_shop7: sure, if I had some drillrod just kicking around
06:50 PM Tom_L: 1/4 what pitch?
06:50 PM rue_shop7: and a brass block to make the nut with
06:50 PM Tom_L: i have that
06:51 PM rue_shop7: if I were going to make one, I'd go larger, about 3/8"
06:51 PM rue_shop7: and probably about 10tpi
06:52 PM rue_shop7: even from china their a million bucks
06:52 PM Tom_L: https://www.ebay.com/itm/154260755621
06:52 PM Tom_L: err that's left
06:53 PM Tom_L: https://www.ebay.com/itm/164612450160?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200818143230%26meid%3Dc74e1bb460a44202931ce152b678781b%26pid%3D101224%26rk%3D2%26rkt%3D5%26sd%3D154260755621%26itm%3D164612450160%26pmt%3D0%26noa%3D1%26pg%3D2047675%26algv%3DDefaultOrganic&_trksid=p2047675.c101224.m-1
06:53 PM Tom_L: that's right
06:53 PM Tom_L: brass is more yes
06:57 PM rue_shop7: huh, I didn't think to actually look for a nut
06:57 PM rue_shop7: $17 for 1 nut seems a bit steep
06:57 PM Tom_L: cradle 2 for more strength
06:57 PM rue_shop7: only $15 shipping
06:58 PM rue_shop7: $32 for a nut
06:58 PM rue_shop7: I couldn't be accused of overspending on that one
06:58 PM rue_shop7: huh
06:58 PM rue_shop7: but, cheaper by far
06:59 PM Tom_L: wonder why the heck so many LH are showing up
06:59 PM rue_shop7: people say that normal thread is no good, but my old machine has been using the same peices for like over 20 years now
07:01 PM Tom_L: how much play?
07:02 PM Tom_L: https://www.tctautomation.com/product-page/rj-0001-2-acme-nut-3-4-10-xl-saw-z-axis
07:02 PM * Tom_L snickers a bit
07:03 PM Tom_L: https://propshopinc.com/1-quot-amp-1-1-8-quot-inboard-propeller-shaft-nut-kit-set-1-quot-amp-1-1-8-quot-shaft-size/
07:04 PM Tom_L: too big
07:04 PM Tom_L: did you find a spindle belt?
07:05 PM Tom_L: https://www.helixlinear.com/media/10849/helix-linear-powerac-acme-screw-catalog.pdf
07:05 PM Tom_L: might tell you how to put it together
07:07 PM Tom_L: https://www.amazon.com/Helix-Right-Thread-Plastic-Start/dp/B0052FS3ZW
07:08 PM Tom_L: probably not heavy enough
07:28 PM rue_shop7: not much, its got takeup nuts
07:29 PM Tom_L: ok i'm gonna go get the plate ready for a part
07:29 PM rue_shop7: 140 oof
07:29 PM Tom_L: hahahaha
07:29 PM Tom_L: and maybe test run one
07:30 PM rue_shop7: I didn't go on the hunt to the sewing machine places
07:30 PM * Tom_L makes out a tool shopping list for this part
07:30 PM rue_shop7: :S
07:30 PM Tom_L: you sit too long, dust collects
07:31 PM rue_shop7: I"m half way thru implementing with 5/16
07:35 PM Tom_L: well at least i don't have to do this manually now. i can actually drill holes
07:46 PM rue_shop7: oof
07:46 PM rue_shop7: I'm 15mm shy of my max build-out for the Z axis
07:47 PM rue_shop7: any more and I dont get 4'x8'
07:47 PM rue_shop7: well the 8' anyhow
08:12 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1200130.jpg
08:15 PM Tom_L: ready for 1st run
08:15 PM Tom_L: taking shape!
08:29 PM rue_shop7: a bit of progress
08:30 PM rue_shop7: its going too slowly, I need to understand the things that keep me from working on stuff
08:55 PM Tom_L: dry run done
08:56 PM Tom_L: ready to cut a part
08:58 PM rue_mohr: oo!
08:58 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A9_New/A9-A10_fixture1.jpg
08:58 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A9_New/A9-A10_fixture2.jpg
08:58 PM rue_mohr: I'm trying to stay awake
08:58 PM Tom_L: well stay awake
08:58 PM Tom_L: i'll have a part tonight
08:59 PM rue_mohr: I need to weld some things on the Z axis next
08:59 PM rue_mohr: not into dressing up and pulling out the welder
08:59 PM Tom_L: nothing obvious stuck out so i'll go run it
08:59 PM Tom_L: do a simpler chore tonight then
08:59 PM rue_mohr: so you did a special vise jaw for it?
09:26 PM Tom_L: no
09:26 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A9_New/A9-A10-profile1.jpg
09:26 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A9_New/A9-A10-profile2.jpg
09:27 PM Tom_L: one tiny thing i need to check
09:31 PM Tom_L: one of my exit paths was a bit low if you look at the top of the ring you can see where it went too deep
09:32 PM Tom_L: kinda hard to see and i think it's still useable
09:34 PM rue_shop7: oo
09:34 PM rue_shop7: is your table ok tho?
09:34 PM Tom_L: table is fine
09:34 PM Tom_L: it's a sacrificial plate
09:34 PM rue_shop7: hah you use a sacraficial aluminum block!
09:35 PM rue_shop7: whats odd
09:35 PM rue_shop7: is it looks like the curves were really low count polylined
09:35 PM rue_shop7: well across the top
09:35 PM Tom_L: yeah
09:36 PM rue_shop7: is the thin part of the inside ~0.95mm?
09:36 PM Tom_L: i need to mic it
09:36 PM rue_shop7: how long did it take to run?
09:36 PM Tom_L: but it looks good
09:36 PM Tom_L: 12 min with manual tool changes included
09:36 PM rue_shop7: woof
09:37 PM rue_shop7: takes us 2 hours 6 minutes
09:37 PM Tom_L: looks complete though isn't it?
09:37 PM rue_shop7: then we drill the holes
09:37 PM rue_shop7: yea
09:37 PM Tom_L: holes included :D
09:37 PM rue_shop7: I wonder if that aluminum will bend ok
09:38 PM Tom_L: i was concerned about the tabs
09:38 PM Tom_L: i may switch it and cut the center out first before i profile it
09:38 PM Tom_L: i wasn't thinking about that but it ran fine
09:40 PM rue_shop7: the radius on our bend jig is about 2mm
09:41 PM rue_shop7: the tab locaions look ok
09:41 PM rue_shop7: as long as their not on the inside of a curve
09:43 PM Tom_L: i should raise that up a bit it's .028"
09:45 PM Tom_L: you're gonna have fun bending this
09:46 PM rue_mohr: its 1/8" right?
09:46 PM rue_mohr: we have a jig
09:46 PM Tom_L: yeah pretty close
09:47 PM rue_mohr: if its thick, it wont fit in the pipe slot tho
09:47 PM Tom_L: .028" is too thin right?
09:47 PM rue_mohr: target is 37.4 thou
09:47 PM Tom_L: mic says .123"
09:47 PM Tom_L: i'll raise the lip up a bit
09:47 PM rue_mohr: thats fine
09:48 PM rue_mohr: abs min is 20 thou
09:48 PM Tom_L: i'll see if they might have some softer stuff if it ever quits raining
09:48 PM Tom_L: so this part is a good part but not quite in spec
09:48 PM rue_mohr: nice not to be cooking hot tho eh?
09:48 PM Tom_L: yeah
09:48 PM Tom_L: humid as heck
09:49 PM Tom_L: you know how the windows frost over in the winter?
09:49 PM rue_mohr: ugh, thats too humid for not winter
09:49 PM Tom_L: well i opened the back door this morning and the door fogged over
09:49 PM Tom_L: nice clean edges on this though
09:50 PM Tom_L: the tabs did great but i think i'll switch and do the middle first anyway
09:51 PM Tom_L: i'll fix things and run another one tomorrow, how many test parts would you like?
09:51 PM Tom_L: i got enough material here to make maybe 6-7
09:52 PM rue_mohr: hah 3 is plenty :)
09:52 PM Tom_L: ok
09:52 PM rue_mohr: if your into it
09:52 PM Tom_L: i don't care
09:52 PM Tom_L: it's all set up now :)
09:52 PM Tom_L: and doesn't take 2hrs to run
09:52 PM Tom_L: he can debur them
09:53 PM rue_mohr: 12 mins...
09:54 PM rue_mohr: is that with one of your fancy bits too?
09:54 PM rue_mohr: did you use coolant?
09:54 PM Tom_L: i used a little coolant yes
09:54 PM Tom_L: and yes i'm using the .1875 bit that is good
09:55 PM Tom_L: the .125 was one i had
09:55 PM Tom_L: i'm gonna get some of those though
09:55 PM Tom_L: i really like em
09:58 PM rue_mohr: hmm
09:59 PM Tom_L: gonna go close up the shop brb
10:05 PM rue_shop7: I'm about to fall asleep
10:05 PM rue_shop7: it looks good tom
10:11 PM Tom_L: thanks
10:11 PM Tom_L: i enjoy this stuff
10:29 PM rue_mohr: :)
10:42 PM Tom_L: i went to get some drills today and the guy was closed
10:43 PM Tom_L: could just be the holiday but i hope he's ok
10:43 PM Tom_L: may check again tomorrow
10:43 PM rue_mohr: :/
10:44 PM Tom_L: he already had one bout with cancer
10:44 PM Tom_L: i wanna get a full set of stub drills but haven't yet
10:45 PM Tom_L: now that i can use em
10:47 PM Tom_L: if you could get me a diameter for A10 outside, i could probably merge that in and get rid of those steps on the perimeter
10:48 PM Tom_L: what do those points do inside that you added?
10:51 PM rue_mohr: they bite into the can to make sure it does't rotate
10:51 PM Tom_L: ahh
11:05 PM rue_bed: if osh park actually gets me the pcbs I designed, I suppose I'll have to work out somehting fancy to get them to make
11:05 PM rue_bed: I'v not done even a double sided board since the rifraf days eh?
11:06 PM rue_bed: mostly just single sided w/no silkscreen
11:06 PM Tom_L: other than the programmers and breakout board i haven't
11:06 PM rue_bed: I didn't try out that silkscreen kit yet :(
11:07 PM Tom_L: ?
11:07 PM Tom_L: which one?
11:07 PM rue_bed: remember you got me that speedball kit cause there wasn't one avail around here?
11:07 PM Tom_L: i did?
11:07 PM Tom_L: :)
11:07 PM Tom_L: nope i forgot
11:07 PM rue_bed: loooooong time ago
11:08 PM rue_bed: when you did the programmers
11:08 PM rue_bed: I couldn't keep up with ya to learn it
11:08 PM Tom_L: that screen is stashed away in the closet i think
11:08 PM Tom_L: the jug of stuff is probaby bad now but it's there too
11:08 PM rue_bed: ditto
11:09 PM Tom_L: i'd never done one
11:09 PM Tom_L: now i have
11:09 PM rue_bed: "I taught myself silk screening and all I got was this lousy shirt"
11:09 PM Tom_L: heh
11:11 PM Tom_L: i bet i could cut the time down on that part. i bet i could get away with one perimeter cut instead of two. i wasn't sure how the bit would do full width at .125 deep
11:11 PM Tom_L: but i bet it would work fine
11:12 PM rue_bed: wait , you cut it full dep???
11:12 PM Tom_L: no but i think i could
11:12 PM rue_bed: we do 0.2mm steps
11:12 PM Tom_L: i did 2 passes
11:12 PM Tom_L: halfway then full
11:12 PM rue_bed: er, 0.4
11:12 PM rue_bed: anyhow
11:13 PM Tom_L: and 1 pass on the .125 bit
11:13 PM Tom_L: it was just to clean up the corners etc
11:16 PM Tom_L: if i rotated the part i could easily get it from 3" wide material
11:24 PM Tom_L: gnite