we have a duct fan, it's under the laser cutter to the left of its cart last i saw it, it's a beige and blue metal box the size of a small TV/VCR combo, and it has two 4" duct things on the back.  It would need some modification to work with the exhaust duct we have (cardboard and duct tape or something from the hardware store or a cut-up plastic bucket)

and then its inlet can be ducted to our acrylic fume hood box thing, or to whatever we're trying to ventilate.

also don't forget someone should go on the roof and reposition the top of the duct in the skylight thing so it's centered over its hole, so it doesn't leak back into the room like it does now.

On Thu, 22 Sep 2016, robb wrote:

we need a duct fan


On Thu, Sep 22, 2016 at 8:50 PM, Jake <jake@spaz.org> wrote:

that's hilarious, i guess it would be perfect for what Trent wants to do.

make sure you get plenty of ventilation, i should have mentioned.

This can't be done in sudoroom without running a fan to the ventilation
duct near the laser cutter.  Perhaps the clear acrylic flow-hood could be
connected to a ventilation blower to the exhaust duct.

-jake


On Thu, 22 Sep 2016, robb wrote:

i just found a 10.5" X 20" electric hotplate yesterday.

it's on the projects shelves past the robot arm w/a note about component
removal use on it.

On Thu, Sep 22, 2016 at 3:39 PM, Trent Robbins <robbintt@gmail.com>
wrote:

Thanks Jake! I was planning on doing it by hand, but it would be neat to

try the mechanical one at sudo room.

Trent

On Thursday, September 22, 2016, Jake <jake@spaz.org> wrote:

a hotplate covered with clean sand heated up to 400 degrees (celsius)

will be a surface on which you can place a circuitboard covered with
such
switches, and then you can pluck them out of the board as their solder
melts.  This is how old boards had their parts salvaged from them back
when
people still did that.

if you don't have the right hotplate and you want to use a skillet
instead, you'll likely have to cut the circuitboard in half or thirds so
that it will be small enough to fit in the skillet of sand.  no big
deal.

you could also remove them one at a time, using a desoldering tool.
There's a motorized one at sudoroom, which is basically a gun-shaped
soldering iron with a hollow tip and a foot-pedal activated vacuum pump.
You could use that to pull the solder out of the hole for one of the two
pins of each key, and then use a regular soldering iron to heat up the
second one while pulling the key out with the other hand.

good luck,
-jake

On Tue, 20 Sep 2016, Trent Robbins wrote:

Does anyone know a good way to salvage from 101-105 mx brown keyboard

switches?

I'm planning on building my own keyboard this fall or winter and have
plenty of time to source scrap.

http://cubiq.org/build-your-very-own-pc-keyboard

Build process is as complex as you'd expect.

Teensy firmware: https://github.com/tmk/tmk_keyboard



Trent

--
(Sent from cellphone)

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