Billet Birth Update Feb 2nd
thanks for throwing that up Vapian, god that is motivating!!!
Well, looking back this week did see a lot done, more aluminum bodies and slide covers, more polishing,,, just not as much NEW stuff as I was shooting for
and one stupid little mistake that i would love to pinpoint on Dev, but it was all me, we'll get to that later. Anyway we are into the plastics now and near everything plastic is machined out of slabs of Delrin.
The
tanks start out with this white Delrin that is FDA approved for food contact. When I was first prototyping I made a few batches of
tanks out of the black stuff, because I thought i looked a little cooler
ehhh, it kinda did,, though it also was kinda hard to see the
juice level against the black background, and apparently something about the coloring wipes the FDA approval off it
so.. that's a no go.
that slab is held in place by the vacuum workboard, and Dev starts out by leveling the piece dead flat.
Delrin is some super tough plastic, but she plows though it like butter. Here she's using an end mill to make the ball valve housing.
What sucks about making small parts is that after a bit, it doesn't matter how powerful your machine is, the little tiny end mills from here forward are super fragile and have to be ran really slow to keep from snapping' um'.
so.. after Devs done with the tiny bits, this comes out. The little end mills have cut a tiny little channel that houses that red silicon gasket perfectly.
extreme closeup...
The faces of the tanks are a little trickier to cut then that Delrin is, it likes to melt and make a mess if you cut it to fast (sometimes even if you don't) so I keep an eye on um as they get cut up. But pretty much the same routine, the vacuum table holds the stock into place while Dev dose all the work and i get all the credit
oh, and we made them little gaskety thingys this week too, we start out with some FDA approved silicon rubber sheets and cut it up into strips
the little cookie cutter on the left
..
has a strong magnet on the back that attaches it to
..
a 2000 pound press that stamps um out, so thats fun.
K, onward to battery contacts
first we cut um up on the table saw into bout the size we want,
then lay some vacuum cording into the vac table about the same size to hold it
.
ok, here is where things go downhill for me this week
.
still going downhill i just don't know it yet
and further downhill...
all the way downhill. every single one, oversized by 3 thousandths of an in
. K, well 3 thousands of an inch is about the thickness of a piece of printer paper, or a little less than the thickness of human hair
.. but it's more than enough to make everyone of these useless junk
.nice
Delrin is not a cheap as free plastic, thats a good chunk of cash down the drain, but thats nothing compared to the time lost, so this was a bigggg bummer
I wanted soooo badly to blame this on Dev, but it was all me, (hell, i made Dev so it all falls on me anyway)
the code for these I wrote back in July and never change it as they were perfect, but in that time i did change how Dev interprets what i tell her to do, and how to do it
. so
TAKE THE LEMONS!!!
Alright, so today i woke up nice and early, snorted some kopi luwak , and re wrote it (well, tweaked it), ran it, it was perfect, got moving forward again. Here is the blank of Delrin bout ready to go into its jig for the second round of machining...
these are the channels that provide the clearance for the battery contacts
.
and here we got um' all leveled down to the right height
neat-o, things are working...
once they get done with their second operation, they can run free for a little bit
now they need the machining on the front and back for the contacts to sit in and lock into place,,, but the tricky part is holding them down, vacuum wont work in this case and we don't want to screw um down cuz that takes forever
. so this jig works using paper as a clamp
.
the jig is oversized length wise by 2 thousandths of an inch, so when i load each part with a strip of paper in-between, the compression of the paper holds um into place with about 35lbs of force
neat
all done with the 3rd operation, time to flip the parts, i can just pull up on the paper to pop each one out, flip um and reuse the paper to clamp um' up tight again.
and done.
now the parts all machined we can put it the battery contacts. They snap right into place and are locked into the grooves we machined.
here they are snapped into place..
and see if they slide into place,
ahh, so that's it for this week, I have some time to make up, but i'll suck it up one way or another. I accounted for a few hiccups in my ETA, but I still want them two days back
Next we got electronic thingys to make so you can look forward to seeing lots of resistors and stuff in the next update....
Sorry this update is so late, but things got done, and i know you guys on the pre order want me working, I'm on it....