#garfield Logs
Feb 27 2022
#garfield Calendar
12:26 AM rue_mohr: got distracted making a power supply for a light
12:34 AM Tom_shop: ran another spare
12:34 AM Tom_shop: pic to come
12:38 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A12_New/Mods/A12_new_slot2.jpg
12:38 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A12_New/Mods/A12_new_slot3.jpg
12:39 AM Tom_L: that's about as good as i can get it
12:39 AM rue_mohr: yea!
12:39 AM rue_mohr: that looks great
12:39 AM Tom_L: holes match too
12:40 AM rue_mohr: :) the surface of all our plywood benches looks the same
12:40 AM Tom_L: heh
12:40 AM rue_mohr: I was comparing against people on twitter too
12:40 AM rue_mohr: one of them has the same power bar under the edge as I do
12:41 AM rue_mohr: I managed to cut 5 or 6 heads today
12:41 AM rue_mohr: feelin good
12:41 AM Tom_L: i may send some prior to the fix you can file
12:41 AM rue_mohr: the cnc I did has new sliders
12:41 AM rue_mohr: might need more adjusting, but doing way better than the old ones
12:41 AM Tom_L: just a couple but i think they can be salvaged
12:41 AM Tom_L: busy day
12:42 AM rue_mohr: the list helped
12:42 AM Tom_L: i'll move that program up to the 'current' one
12:42 AM Tom_L: on both parts
12:42 AM rue_mohr: hmm,
12:43 AM rue_mohr: wonder if I should mess with the printer while I think on this power supply thing
12:43 AM Tom_L: you can tell them apart because the new A12 has a radius on the inside cut
12:44 AM rue_mohr: k
12:44 AM Tom_L: i had to change that profile some to get it to fit and work with the cutter
12:45 AM rue_mohr: sounds like its maxed out
12:45 AM Tom_L: it has minimal clearance on the shank
12:45 AM Tom_L: but miss is good as a mile
12:46 AM Tom_L: do you want any of these A9 with the bigger hole?
12:46 AM rue_mohr: yea I'll fix em up
12:47 AM Tom_L: only a couple
12:48 AM Tom_L: oh wait.. one is the short part
12:53 AM rue_shop3: ?
12:58 AM Tom_L: the A9 before we made it longer
12:59 AM Tom_L: i can send it if you think you can use it
01:04 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A12_New/Mods/A12_new_profile.jpg
01:04 AM Tom_L: you can see the new inside path
01:04 AM Tom_L: the green line
01:10 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A12_New/Mods/A12_new_profile_clearance.jpg
01:10 AM Tom_L: and the tool clearance
01:10 AM Tom_L: inside circle is the small of the shank
01:46 AM rue_mohr: wow
05:05 AM Tom_L: https://www.youtube.com/watch?v=4WjXyJTpaW8
05:05 AM Tom_L: skip to 8:52
05:52 AM rue_mohr: nice, thats the thing
12:23 PM aandrew: ok that is kind of cool
12:24 PM aandrew: a little bandsaw you mount on a vise so you don't have to take up bench space
12:24 PM rue_mohr: I have a cheap one
12:24 PM Tom_L: gonna go look at one in a bit
12:24 PM rue_mohr: it sounds like death being dragged behind a float on a parade
12:25 PM Tom_L: heh
12:25 PM rue_mohr: and it needs a new blade
12:25 PM Tom_L: what tpi do you use?
12:25 PM rue_mohr: that might have been a good idea for me to get yesterday
12:25 PM Tom_L: i'm looking at 14 & 18 tpi i think
12:25 PM rue_mohr: well, for steel 14ish, but I'd dial it down to the lowest you can go for aluminum
12:26 PM aandrew: I did not know that end mills normally had a hole in the middle
12:26 PM Tom_L: low tooth count?
12:26 PM Tom_L: like 10 or did you mean 18
12:26 PM rue_mohr: 18 yea
12:26 PM rue_mohr: just did math
12:26 PM Tom_L: ahh ok
12:26 PM rue_mohr: wait
12:26 PM rue_mohr: wait that didn't work
12:27 PM rue_mohr: for the 1/8 material right?
12:27 PM rue_mohr: no the 5/16
12:27 PM Tom_L: 5/16
12:27 PM aandrew: wait, it looks like he plunged more than 0.01"
12:27 PM rue_mohr: ok
12:27 PM rue_mohr: just a sec, morning math
12:27 PM rue_mohr: 5/16 = .3125
12:27 PM Tom_L: and maybe 2" or so
12:27 PM rue_mohr: /2 = .156
12:27 PM rue_mohr: 1/.156 =6.4
12:28 PM rue_mohr: 8tpi?
12:28 PM Tom_L: so fewer teeth for aluminum?
12:28 PM Tom_L: thicker than .125
12:28 PM rue_mohr: just more than 2 teeth/thickness
12:28 PM aandrew: still blows me away that tapers work so well for holding tools
12:28 PM rue_mohr: as thats the limit
12:28 PM Tom_L: aandrew, the latest thing is thermal
12:28 PM rue_mohr: aandrew, unless you have side load
12:29 PM Tom_L: for really high spindle speeds
12:29 PM rue_mohr: aandrew, tapers for mills use a pull-bar to hold them in
12:29 PM Tom_L: my kid uses an induction heater to mount the tools in the holders
12:30 PM Tom_L: no more collets
12:30 PM rue_mohr: I wonder if they make the holders out of material with special expansion rates
12:30 PM rue_mohr: so, about old tools
12:30 PM Tom_L: i know they discolor quickly
12:30 PM rue_mohr: I was trying to find a HSS parting blade for the lathe yesterday
12:31 PM rue_mohr: EVERYTHING is centered around carbide inserts
12:31 PM aandrew: https://youtu.be/4WjXyJTpaW8?t=832 why is he drilling a pilot hole for the drill bit he uses a few seconds later?
12:31 PM Tom_L: heh, i've got a handfull of cutoff sticks
12:31 PM rue_mohr: the cutter cant cut the middle
12:31 PM rue_mohr: its a deadspot
12:31 PM Tom_L: the bit will wander if you don't
12:31 PM aandrew: rue_mohr: *nods* I mean more about how well they self-center the tool in the machine and distribute the load across the taper
12:32 PM aandrew: rue_mohr: a regular drill bit like what he's using can't cut the middle?
12:32 PM Tom_L: maybe a split point
12:32 PM rue_mohr: oh, thought you meant the milling cutter
12:32 PM Tom_L: but generally not
12:32 PM aandrew: Tom_L: what prevents the tool cutting the pilot hole from wandering?
12:32 PM rue_mohr: drill bits have a 'spade' in the middle that has to force thru the material
12:32 PM Tom_L: they're usually a larger diameter
12:34 PM rue_mohr: wow, youtube stepped up the ads
12:34 PM aandrew: https://youtu.be/4WjXyJTpaW8?t=899 that's a neat trick (can you tell I'm a newbie/wannabe machinist?)
12:34 PM aandrew: rue_mohr: I don't notice them. ublock origin ftw
12:34 PM rue_mohr: oh I'm on the wrong part
12:35 PM rue_mohr: !!! youtube ads dont come from youtube?!
12:36 PM rue_mohr: 2350
12:38 PM aandrew: oh he's making rounded edges
12:40 PM rue_mohr: she?
12:40 PM rue_mohr: anyhow, its a lot of work just for that jig
12:44 PM aandrew: so that particular jig does not have anything pulling the taper down and holding it in place, but the workpeice is held in place and that in turn is holding the shaft in place?
12:46 PM aandrew: https://youtu.be/4WjXyJTpaW8?t=100 what is the purpose of the copper wire? "keeps the movable jaw from influencing the position of the part" is what she says
12:51 PM rue_mohr: have to copy the link to a working browser and wait out the ads again
12:51 PM rue_mohr: the jaw on a vise like that likes to lift as it tightens
12:51 PM rue_mohr: so its probably to keep it from rotating it with it
12:52 PM Tom_L: a cheap ass vise will lift
12:52 PM Tom_L: i have never done that
12:52 PM aandrew: interesting
12:52 PM aandrew: rue_mohr: your adblocker doesn't just kill 'em?
12:52 PM Tom_L: aparently the wire would cause it to 'roll' down
12:53 PM Tom_L: if one side rotates up, the other side would roll down
12:53 PM Tom_L: kindof a cheap cheat
12:54 PM aandrew: huh, interesting
01:03 PM rue_mohr: 3||E
01:03 PM rue_mohr: pushpull transformer
01:05 PM Tom_L: :)
01:08 PM rue_mohr: ok, taxes, coolant squirter, recalibrate 3d printer (missed it a bit), light power supply
01:09 PM aandrew: I had no idea people tried to repressurize tennis balls
01:09 PM rue_mohr: ....
01:10 PM rue_mohr: I need breakfast
01:27 PM Tom_L: you do that when the sun comes up
01:37 PM aandrew: yeah you're a little behind :-)
03:39 PM rue_mohr: I cant get this light driver supply to run closed loop properly
04:09 PM Tom_L: looked, didn't like, didn't get
05:15 PM rue_shop3: no, the TL494 cant regulate properly
05:20 PM Tom_L: the blade was angled in such a way i don't think i could feed long material thru it
05:20 PM Tom_L: got more hacksaw blades instead
05:20 PM rue_mohr: yea
05:20 PM rue_mohr: thats what I was on about
05:21 PM Tom_L: too bad they twisted the blade
05:28 PM rue_mohr: so amny things I just dont understand right yet
05:28 PM rue_mohr: I have all these wrong facts in my head that I have to work out alternates for as they are disproven
05:37 PM Tom_L: about?
05:37 PM Tom_L: the earth _is_ round...
05:38 PM Tom_L: Magellan showed us that
06:07 PM rue_mohr: inductors do not act like capacitors, but for current
06:30 PM rue_shop3: wow 10T 1.6mH
06:39 PM rue_shop3: with gap 10T 10uH
06:49 PM Tom_L: not much done today
06:50 PM Tom_L: all set to run parts but gotta make blanks first
07:06 PM rue_shop3: thats going to be more work than the parts
07:07 PM rue_shop3: your sure your the right way on this, and to not cut out the parts then put them in the formed jig?
07:40 PM rue_shop3: ok, its 5:30
07:40 PM rue_shop3: I got a working power converter, DOES need a heatsink :(
07:53 PM Tom_L: yeah they turn out nicer this way
07:53 PM Tom_L: and it's only one setup
07:54 PM Tom_L: they would run real quick if there weren't so many manual tool changes
07:55 PM rue_shop3: hmm, this power converter is only really doing about 30w, the core should be able to be smaller
07:55 PM rue_shop3: not going there tho
07:56 PM Tom_L: i may go try one of the new blades for a bit
07:58 PM Tom_L: huh, tomorrow is the last of the month
08:00 PM Tom_L: any other parts you have trouble keeping up with?
08:03 PM rue_mohr: not currently
08:16 PM Tom_L: ok, the new blades make a big difference
08:16 PM Tom_L: cut a 10" strip in just a couple min
08:16 PM Tom_L: 10tpi i think
08:18 PM rue_mohr: ?
08:18 PM Tom_L: jig saw
08:18 PM rue_mohr: ah
08:19 PM rue_mohr: did i show you my upside down trick with the jigsaw?
08:19 PM Tom_L: no
08:19 PM Tom_L: but this works ok
08:25 PM rue_shop3: i"LL FIND the image
08:25 PM rue_shop3: in a bit
10:12 PM Tom_L: ?
10:18 PM rue_mohr: doing taxes
10:18 PM rue_mohr: :/
10:18 PM rue_mohr: I"ll post later for ya :)
10:19 PM Tom_L: oh lovely
10:19 PM rue_mohr: I'm using the tax forms done by the accountant in previous years as a guide
10:19 PM Tom_L: (taxes)
10:19 PM rue_mohr: this **** is crazy
10:19 PM Tom_L: doing your own?
10:19 PM rue_mohr: yea
10:19 PM rue_mohr: $300 for the accountant to do it this year
10:19 PM rue_mohr: "please **** off with getting us to do your personal taxes"
10:19 PM rue_mohr: ok!
10:19 PM Tom_L: wonder how close yours are to ours
10:20 PM rue_mohr: lots of stuff revolves around schedule 8
10:20 PM rue_mohr: *blink*
10:20 PM Tom_L: B
10:20 PM Tom_L: i think
10:20 PM rue_mohr: copying of many magic numbers
10:20 PM rue_mohr: glad I have a cheat sheet
10:20 PM Tom_L: heh
10:20 PM rue_mohr: I only started getting it done by an accountant so I'd have a guide on how to do it
10:21 PM Tom_L: i just put mine in the file cabinet
10:21 PM Tom_L: still gotta pay the accountant
10:21 PM rue_mohr: totally helps to know where to put in the numbers
10:22 PM Tom_L: mine was ~1/4" thick
10:24 PM rue_mohr: I got hte paper book of forms, its 212thou thick
10:26 PM * Tom_L heads to bed
10:26 PM Tom_L: kinda tired today
10:26 PM rue_mohr: np
10:30 PM rue_mohr: and I'm learning stuff
10:31 PM rue_mohr: it looks like I can claim adoption expenses
10:31 PM rue_mohr: want to be adopted?
10:33 PM Tom_L: sure
10:34 PM Tom_L: do you claim your cats?
10:37 PM rue_mohr: :)
10:38 PM rue_mohr: I dont think many people could ever get this right
10:38 PM rue_mohr: I can, but I know lots of people bail on this
10:39 PM rue_mohr: to much searching and re-copying numbers
10:55 PM rue_mohr: hmmm, I owe them $1100? ugh
11:00 PM rue_mohr: looks like I earned a lot more than last year tho
11:00 PM rue_mohr: I'm moved a bracket
11:00 PM rue_mohr: and its never good to be on the bottom end of a bracket
11:26 PM rue_mohr: damnit I just got a T4A
11:26 PM rue_mohr: now I have to rework it all
11:27 PM rue_mohr: AAH AND A T4E
11:27 PM rue_mohr: wtf is a T4E?
11:28 PM rue_mohr: ok, whatever...