[Noisebridge-discuss] where is the ferric chloride

Jonathan Foote jtfoote at ieee.org
Wed May 16 15:32:58 UTC 2012

At least one bottle of FeCl3 leaked over everything on my
used-to-be-member shelf :(

On Wed, May 16, 2012 at 12:44 AM, Jake <jake at spaz.org> wrote:
> I put a circuitboard etching tank in the darkroom, with an electric heater
> and an air pump.  The goal is for it to be ready anytime you want to etch
> a board.
> But i can't find the two bottles of Ferric Chloride etchant which were in
> the dirty shop.  There has been a reorganization of the shop recently and
> I figured the liquid etchant would remain where it was (with all the other
> sketchy chemicals) but now i can't find it.
> Does anyone know where it went?  We need about two bottles to fill the
> tank in the darkroom.  (I did find the nasty old half-bottle which was on
> the shelves with soldering tools, but i don't want to use it)
> I also need a mechanical timer knob, like the one on a toaster oven or
> (knob-style) microwave oven, so that it's impossible to accidentally leave
> the heater or air pump on all night.  I don't want one from an actual
> toaster oven though, because if you turn the knob backwards a little bit
> it just stays on.  And i don't want to take the one from our nice
> stainless steel Amana microwave because it is going to be repaired soon,
> and also that timer only runs if it has power.
> Thank you for your interest in etching circuitboards at noisebridge.
> After this equipment is set up and running I will teach a class on making
> your own circuitboards from scratch at noisebridge.
> -jake
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