#garfield Logs

Dec 20 2020

12:06 AM aandrew: wow check it out: https://imgur.com/a/JKQ0576 that is the surface finish
12:13 AM rue_shop2: http://dspace.calstate.edu/bitstream/handle/10211.3/181381/Brad%20Roan_Thesis_2016_F.pdf
12:13 AM rue_shop2: ^^!!
12:13 AM rue_shop2: nope imugr dont work for firefox
12:13 AM Tom_L: works on mine
12:34 AM rue_mohr: are you using firefox V52.9.0
03:14 AM rue_shop2: https://lowpowerlab.com/2013/01/23/diy-home-made-metal-stencils-step-through/
06:24 AM Tom_L: 84.0
10:49 AM aandrew: I get the desire to do your own alu etching but fuck trying to work with aluminum cans to get a flat sheet would drive me mental
10:54 AM Tom_L: umm
10:54 AM Tom_L: aluminum foil?
10:54 AM aandrew: you'd have to get some awfully thick alu foil
10:55 AM aandrew: I love how the Coke can pic he posted shows "VERY LOW SODIUM" on coke, as if that's the thing you need to watch out for when drinking coke
12:12 PM rue_mohr: need to lock onto a project
12:12 PM rue_mohr: want to get the power supply finished, need an error amplifier
12:30 PM rue_shop1: ok, so the paint made of battery guts did corrode the wire a bit last night
12:30 PM rue_shop1: not really a surprise
12:30 PM aandrew: is charcoal conductive?
12:31 PM aandrew: it seems it is; you can buy very fine powdered charcoal at pharmacies/natural foods stores
12:31 PM aandrew: that might work better
12:32 PM aandrew: might be wrong on the conductivity though
12:32 PM aandrew: I don't think you want to manually grind up graphite drawing pencils from an art store
12:38 PM rue_mohr: graphite for lubricant
12:38 PM Tom_L: you can get powdered graphite
12:38 PM rue_mohr: typ sold for locks
12:39 PM aandrew: oh yeah, good point
12:41 PM Tom_L: https://www.amazon.com/Powdered-Graphite/s?k=Powdered+Graphite
12:41 PM Tom_L: homedepot even has it
12:42 PM Tom_L: https://www.walmart.com/ip/AGS-Powdered-Graphite-Dry-Lubricant/38473101
12:48 PM aandrew: this is probably something y'all will want to squirrel away: http://fab.cba.mit.edu/classes/S62.12/people/vernelle.noel/Plastic_Snap_fit_design.pdf
01:00 PM rue_mohr: amazing
01:00 PM rue_mohr: I can see how every one of those fails under extended use
01:01 PM rue_mohr: esp after prying at some of the clips a few times :)
01:02 PM rue_mohr: hmm
01:09 PM aandrew: well yes, but they're not meant for insert/remove cycles
01:09 PM * Tom_L gives rue_mohr a gentler prybar
01:25 PM aandrew: https://www.thingiverse.com/thing:1860118 there's a .scad library based off that .pdf too
01:30 PM rue_mohr: oo
01:58 PM aandrew: ooh, NOW he's interested in these fragile clips. :-)
02:23 PM aandrew: pcap: I just got my extrusion/flow settings dialed in. ironing the top layer (cura setting) gave me this fucking awesome finish: https://ibb.co/nCQy76b and https://ibb.co/S6LjPM5
02:24 PM aandrew: balls, wrong window
03:53 PM rue_mohr: ok, for now, the tub tap is fixed
03:54 PM rue_mohr: the valve seat was DONE
03:54 PM rue_mohr: had to take a reaming bit to it
03:54 PM rue_mohr: I have a 60 for countersinking
03:55 PM rue_mohr: with some work, it generated a nice surface
03:55 PM rue_mohr: not quite where it should be, I'll see
03:56 PM Tom_L: how do you move icons on the topbar rpi4?
03:56 PM Tom_L: want the clock etc back on the right
04:03 PM rue_shop1: dunno
04:35 PM rue_mohr: hey! for the linear sensor, the conductive paint works!
04:37 PM aandrew: rue_mohr: nice
04:37 PM rue_mohr: I need to redo the conductive paint mix tho
04:37 PM aandrew: this is to paint the capacitor plates on the inner surfaces?
04:37 PM rue_mohr: this is working but I dont think its the right direction
04:37 PM rue_mohr: outter, yea
04:44 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1180268.jpg
04:57 PM rue_mohr: https://www.youtube.com/watch?v=kJrAFm20-zg&feature=youtu.be
04:57 PM rue_mohr: wow
04:57 PM rue_mohr: https://www.aliexpress.com/item/1005001407181715.html
04:57 PM rue_mohr: so tempting!
05:50 PM rue_shop2: where did I paste the mix for the aluminum etchant?
05:51 PM rue_shop2: Etch it in a 1:3 muriatic acid to hydrogen peroxide solution
05:51 PM rue_shop2: Etch it in a 1:3 muriatic acid to hydrogen peroxide solution
05:51 PM rue_shop2: Etch it in a 1:3 muriatic acid to hydrogen peroxide solution
05:51 PM rue_shop2: Etch it in a 1:3 muriatic acid to hydrogen peroxide solution
05:51 PM rue_shop2: Etch it in a 1:3 muriatic acid to hydrogen peroxide solution
05:51 PM rue_shop2: ok, where can I write that...
09:51 PM rue_mohr: Etch it in a 1:3 Hydrochloric acid to hydrogen peroxide solution