<DocScrutinizer05>
but you shouldn't rely on it. For 2 reasons: 1) it will terribly abuse the cell 2) it might make charging the battery really hard to start - thanks to battery detection not noticing a rudimentary voltage
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<DocScrutinizer05>
and 3) of 2: there are fake chinese batteries that don't have any protective circuitry
<wpwrak>
heh, aiming for compatibility with the new "industry standard" :)
<DocScrutinizer05>
hehe
<DocScrutinizer05>
the problem with this chip is actually that it eats considerable quiescent current even when device is off
<DocScrutinizer05>
about ten to hundred times as much as twl4030 is supposed to use in power-down mode
<wpwrak>
eww
<DocScrutinizer05>
a cell discharged to - say - 3.0V has maybe 30mAh left over til it reaches 2.5V
<DocScrutinizer05>
those should suffice for several months of device siting in shelf in power-down mode
<DocScrutinizer05>
IQ VIN Quiescent Current Charger Off, Not Switching, VOUT = 3.3V, No l 60 120 215 μA
<wpwrak>
for six months and 30 mAh, you could afford only 6 uA
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<whitequark>
DocScrutinizer05: c't hacks still hasn't arrived here :(
<whitequark>
seems like they didn't send current issue at the end!
<wpwrak>
give those poor postal workers a bit of time to read it ...
<whitequark>
lol
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* whitequark
bought that acrylic, though it was more like $45
<whitequark>
now I have more acrylic I could use in my whole life
<wpwrak>
a few weeks later, whitequark buys a car, to make it easier to transport more of these sheets
<wpwrak>
to what size did they cut it for you ? and how thick is it ?
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<whitequark>
wpwrak: 1000x500
<whitequark>
x3
<whitequark>
it is surprisingly heavy
<wpwrak>
3 mm ... so 2D cuts
<whitequark>
yep
<wpwrak>
you'll be going back to them when you move into 3D :)
<whitequark>
nope
<whitequark>
no sheets thicker than 4mm
<wpwrak>
sissies
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<whitequark>
hrm. no blades in the box with the jig saw.
<whitequark>
dicks. their next model by cost has one. I thought they'll place one with this one too :/
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<wpwrak>
well, you want to get a nice bade anyway. nothing too coarse.
<whitequark>
hmmm, any advice on that?
<whitequark>
for wood, acrylic, maybe aluminium profile, *maybe* very thin steel
<wpwrak>
if you can find something specifically for acrylic, you may try it
<wpwrak>
else, just get the one with the smallest teeth. that would usually be one for metal.
<whitequark>
I see... thanks!
<wpwrak>
small teeth = smooth cuts and not a lot of kicking and bouncing of the machine
<wpwrak>
drawback: heat could become an issue. but let's see how it goes.
<whitequark>
hm... if you keep a sheet of acrylic in air and bounce it back and forth, it produces a funky noise
<whitequark>
wobwobwobwob
<wpwrak>
yes, you get this with many materials :)
<whitequark>
lemme cut something from it
* whitequark
sighs
<whitequark>
I have 13 mains sockets right now, and I need at least two more
<whitequark>
starting to wonder whether I will fry something in the walls
<whitequark>
that would be unfortunate. and reminds me, I should probably get a fire extunguisher
<wpwrak>
maybe time to install smoke detectors inside the walls :)
<whitequark>
uhhhh
<whitequark>
I have a blob of acrylic all over my endmill.
<whitequark>
how the fuck do I remove it.
<wpwrak>
;-))
<wpwrak>
remove endmill. then gently turn the acrylic along with the endmill's windings
<wpwrak>
next time, lower spindle speed :)
<whitequark>
can't turn
<whitequark>
it's welded well
<wpwrak>
then make a length-wise cut with a cutter
<wpwrak>
what size endmill did you use ?
<whitequark>
1mm
<wpwrak>
reasonable enough
<wpwrak>
ah, that's those 1x5 mm monsters
<wpwrak>
that'll be a bit more difficult then. maybe try to dissolve it
<wpwrak>
acetone may do the trick
<wpwrak>
you could also try to heat it gently and then try to spin it off
<wpwrak>
if all else fails, pyrolysis with a hot flame
<whitequark>
oooooh, flame
<whitequark>
that I can make
<whitequark>
brb
<wpwrak>
why am i not surprised ...
<whitequark>
worked really well
<whitequark>
is it bad for endmills to become red hot?
<wpwrak>
we'll see ...
<wpwrak>
next time, less hot flame ...
<whitequark>
russian flame not have "less hot" setting. russian flame burn like sun at all time.
<wpwrak>
;-)
<wpwrak>
at least it seems that your heat source was of a chemical nature
<whitequark>
filthy westerner, you not know that "sun" mean thermonuclear?!
* whitequark
ponders on the metaphysical consequences of wearing a fake russian accent while actually being russian
<whitequark>
so. you say 18k rpm is too much
<wpwrak>
(sun) oops :)
<wpwrak>
the acrylic seems to be of that opinion
<whitequark>
let's try 8k
<wpwrak>
what's your feed rate ?
<whitequark>
100mm/min with 8k
<whitequark>
calculated by g-wizard, for which I paid $70 and therefore it is infallible
<wpwrak>
hmm
<whitequark>
no, 8k results in mostly same
<wpwrak>
i use 2 mm/s with a 3.175 mm endmill
<whitequark>
#YOLO
<wpwrak>
6500 rpm here
<whitequark>
interesting
<wpwrak>
higher feed rate should actually make it less likely to melt
<whitequark>
exactly
<wpwrak>
maybe your "acrylic" isn't really acrylic ...
<whitequark>
ow. dropped that endmill and broke it.
<whitequark>
I only have three left...
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<whitequark>
fortunately I already ordered 20 more :p
<wpwrak>
yeah, i can vividly imagine that these 1x5 mm mills break REALLY easily ;-)
<whitequark>
they do.
<wpwrak>
hopefully shorter ones
<whitequark>
well... my material is 3mm. so need at least 4mm of length.
<whitequark>
ok, S2000 F30
<wpwrak>
or a thicker mill
<wpwrak>
?
<wpwrak>
for all those cases and fixtures, i use the 3.175 mm endmill. of course, i use acrylic for 3D, so my pieces are even thicker than yours
<whitequark>
damn, that just made it much worse
<whitequark>
basically the melted blob of acrylic on the endmill destroys everything on its path
<whitequark>
okay... F500 S13000
<whitequark>
again recommended by gwizard
<whitequark>
and with tool d=3.175
<whitequark>
oh my god the screams
<whitequark>
day 10: We are now practically covered in red-hot acrylic. I have never heard material scream this loud. All hope is gone.
<whitequark>
okay... for "fine finish" it recommends S12350 F52
<whitequark>
ugh no.
<whitequark>
oooooh got it
<whitequark>
wrong direction.
<whitequark>
if cutter is to the right of material, all the gross chips are left on the garbage side
<whitequark>
frankly, the sounds it produces while milling truly are horrifying
<wpwrak>
"chips" what on earth are you doing ?
<whitequark>
chips = cut material, isn't it?
<wpwrak>
"chips" is usually large bits. what you should get is something like sawdust
<whitequark>
no. I get huge melted acrylic strands
<wpwrak>
i'm beginning to realize how things went wrong in chernobyl ...
<larsc>
so what are your neighbors thinking about all the noises from your appartment?
<whitequark>
larsc: if they come over, I'll tell them to fuck off
<whitequark>
this is a good retribution for 1 year of almost constant drilling of walls
<wpwrak>
"let's hope they kill each other before anyone of them gets out catches us" ?
<wpwrak>
#s/out/out/ and/
<larsc>
DON"T DEAD OPEN INSIDE
<wpwrak>
:)
<wpwrak>
maybe reducing the milling depth could lower the heat production (and also the screeching). i do 2 mm at a time. but you could also try less
<wpwrak>
still puzzling, though
<whitequark>
hmmm, that makes sense
<wpwrak>
and, how is it going ? are the neighbours already undusting their guns ?
<whitequark>
nah no one came
<whitequark>
guns huh
* whitequark
plans to make a railgun sometimes
<whitequark>
fun fact: it's not classified as a "weapon" under russian law
<wpwrak>
cause of death: "physics"
<whitequark>
well, you can write that for literally every case
<whitequark>
"life is a sexually-transmitted disease with 100% mortality"
<larsc>
for now
<wpwrak>
now we know what he's working on in his spare time
<whitequark>
lol
<larsc>
my personal clone army
<wpwrak>
hmm, first you make yourself immortal and invulnerable, and then you create competitors with the same characteristics ?
<larsc>
I'm only working on the first problem
<qi-bot>
[commit] Werner Almesberger: atusb/fw/: DFU: support multiple sets of flash operations; support multiple alt settings (master) http://qi-hw.com/p/ben-wpan/8f2f13c
<wpwrak>
an eternal life, scared of attackers and accidents ? hmm
<larsc>
I once wondered if you wouldn't die of natural causes if there was a threshold where the chance of having been in a life ending accident basically becomes 99.9999% so that it is impossible to live beyound that age
<whitequark>
well... it will never become 100%
<whitequark>
then you just have to decide where to cut off
<larsc>
e.g. lets say there is a one in a million chance you get run over by a car, how long would you have to live that you were eventually run over by a car
<whitequark>
that also all assumes a typical life
<whitequark>
if you don't walk on roads, you're not going to get hit by a car
<wpwrak>
whitequark: sometimes cars and up on sidewalks or in houses ...
<wpwrak>
#s/and/end/
<wpwrak>
seems that his neighbours got him in the end. or maybe it was the acrylic.