[Noisebridge-discuss] where is the ferric chloride

Chris Murphy chrisnoisebridge at gmail.com
Fri May 18 18:51:17 UTC 2012

They are in a tub marked PCBs on the south wall of the hack pile about one shelf off the floor. Saw both bottles in there on Wednesday night. 

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On May 16, 2012, at 0:44, 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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