Homebrew PCBs

Phil wrote:
> 
> about acrylic - the guys at TAP Plastics told me that it is not acid 
> resistant.  I wouldn't use it for CuCl because of that.  It worked 
> fine for AP and FeCl, though.
> 
> Phil
> 
The three above mentioned etchants normally have acid and pH will be 
very low (< 1). Acrylic (PMMA) is ok for acid. I made a small 
electrochemical test cell out of this stuff and have had 20% sulfuric 
acid in it for weeks at a time and see zero effect to date.

Nylon is the common plastic you must avoid contact with acid for long 
periods, even vinegar.

Of course there is always www.google.com