Homebrew PCBs

Jim Miller wrote:
> Just interested in heating a persulfate etching solution.

It works fine. Like Russell said, the liquid must dampen resonances 
because I've never seen any burning or arcing of any sort on the copper 
that is immersed in solution. Also remember etchants are very conductive 
compared to water. I often heat ferric chloride with the PCB in it.

Adam