asciilifeform: rothbart: it mutated into a different item, FUCKGOATS

asciilifeform: rothbart: it wouldn't hurt

asciilifeform: fleanode fleas bite

asciilifeform: it's an idea

asciilifeform: ( for either )

asciilifeform: dunno if you could get the req'd tolerances without something entirely like injection mold.

asciilifeform: this, i would buy for kbd. but it is not a low-tech item, not the least bit a 'simply bake, like a pot'

asciilifeform wonders if any dentist knows how to laser sinter yet

asciilifeform: troo

asciilifeform: if yer sintering, just use modern material neh

asciilifeform: ( or even model-f key-sized )

asciilifeform: they dun have fist-sized tooth afaik

asciilifeform: reasonably good material

asciilifeform: did see, but only because specially set out to.

asciilifeform: dunno, worx on piano keys neh

asciilifeform: for completeness also oughta mention ivory

asciilifeform pictures mircea_popescu's keyz with perlmutter inlays

asciilifeform: ( these are not even fully disjoint concepts; there is even such a thing as 'metallic glasses' )

asciilifeform: sorta why we have ferrocement

asciilifeform: take iron, and get fatigue -- vs -- take ceramic, and get brittle - is a very real engineering tension

asciilifeform: ductility is not 'different sort of brittle' omfg

asciilifeform: but yes this deserves to be settled experimentally. nao how to make pistons, cylinders, flappers...

asciilifeform: ( aluminized )

asciilifeform: i did at one point consider glass

asciilifeform: https://www.modelfkeyboards.com/wp-content/uploads/2016/01/animation-final-black-2.gif << likbez ☟︎

asciilifeform: BingoBoingo: there is no 'switch', there is a piston fitting a barrel

asciilifeform: BingoBoingo: not grout, but individually lapping on a lathe. nasty.

asciilifeform: ( recall also 'frozen chicken test' in aviation )

asciilifeform: good test

asciilifeform: nah not soft

asciilifeform: BingoBoingo: if dropped wrenches are part of 'foot traffic' then we agree

asciilifeform: if you wouldn't bolt it to a kalash -- it is too brittle.

asciilifeform: foot is not a shock

asciilifeform knows this

asciilifeform: absolutely. mass shitware simply not existed yet.

asciilifeform: and yes the french gave us the screwcut lathe and more or less everything

asciilifeform: materials is 95% of actual engineering noshit.jpg

asciilifeform: lolwat

asciilifeform: but no i dun have one here on my desk

asciilifeform: paint

asciilifeform: sure

asciilifeform: nobody fondled those all day, every day.

asciilifeform: sure as fuck will wear after kilometres of acidic finger-rub.

asciilifeform: wears.

asciilifeform: lol!!!

asciilifeform: mircea_popescu: for my enlightenment, how wouldja double-shot porcelain ?

asciilifeform: ( the tricky bit re tolerance, is the piston )

asciilifeform: i'd incidentally be entirely open to buying porcelain keys, if anyone knew how to make these to the req'd dimensional tolerance, and see what happens

asciilifeform: it is good proxy for decades of whanging

asciilifeform: can say same for ceramic ? which one ?

asciilifeform: upstack : i've dropped a wrench on my model-f keys, and 0 chipped. ☟︎

asciilifeform: forever << or until you ding it

asciilifeform: ^

asciilifeform: not 'fair fight', iron rusts

asciilifeform: ( a la ferrocement )

asciilifeform: but i do wonder if this could be dealt with by mixing in steel wool or fibre or similar

asciilifeform: well yes, 'brittle' is shorthand for 'too brittle'

asciilifeform pictures mircea_popescu posting from frozen wastes of pluto, where steel is brittle

asciilifeform: mno.

asciilifeform: problem is brittle.

asciilifeform: that ain't the problem

asciilifeform: very very hard

asciilifeform: discussed in thread

asciilifeform: lol possiblywhy.

asciilifeform: why isn't she here, again

asciilifeform: oyeah notbad, i spent coulplea hrs reading her pieces

asciilifeform: i forgot to mention bit-shifts , but these are obviously also available.

asciilifeform: ( the rsa operation, the one and only, is modular exponentiation. but it is made trivially from modular multiplication . )

asciilifeform: goal is, state a modular multiplier , takes A, B, N, (each is a B-bit number) and yields a B-bit result R, where R = a*b mod N .

asciilifeform: there is also division but it is RUINOUSLY expensive

asciilifeform: that's it

asciilifeform: you have the following primitives : multiplier ( 2 N-bit numbers -> 1 2N-bit number ); adder ( ditto ); subtractor ( ditto ); muxer ( 2 N-bit numbers, 1 single-bit number, yields one or the other N-bit depending on that single bit ) ; logical ops (and/or/xor/not) ☟︎

asciilifeform: again you don't need to state it in compilable ada

asciilifeform: it's a mathematical problem purely

asciilifeform: forget for a moment ada

asciilifeform: if ben_vulpes et al want to try their hand , i'll read

asciilifeform: this is in fact the only item holding up release of 'p'.

asciilifeform: speaking of which, and before it gets lost upstack, i still dun have a modular mult

asciilifeform: it is a deliberately crafted insult to actual people.

asciilifeform: would you eat from trough made for a pig ? that's what using plebekbd feels like.

asciilifeform: i spend 14+hrs/day with the thing in my hands, and it makes a difference.

asciilifeform: and i ain't eating 'american cheese' either.

asciilifeform: how about no.

asciilifeform: http://www.yomura.com.tw/double-injection.html << illustration.

asciilifeform: doubleshot injection molding

asciilifeform: there is to be no slip of the ratchet, no 'doctor cured your ear, but poked out an eye'

asciilifeform: this is a minimal bar.

asciilifeform: understand, right here i have almost 40 y.o. keycaps that looks EXACTLY as when new.

asciilifeform: wears.

asciilifeform: then wear.

asciilifeform: surfaces are to be smooth.

asciilifeform: ben_vulpes: i dun want to FEEL THE LETTERS OMFG

asciilifeform: lol

asciilifeform actually owns a vulcanized rubber kbd, it is in machine shop

asciilifeform: ew

asciilifeform: what part of this is hard to understand.

asciilifeform: ( and if you make it not propagate - you automagically get a thing that I WILL NOT USE because it ain't propagating to my fingertips )

asciilifeform: shock propagates

asciilifeform: understand, i dun use 'squishies', if every key dun sound like a kalash dryfiring, it ain't a keyboard

asciilifeform: BingoBoingo: itself