Homebrew PCBs

DJ Delorie wrote:
> John Michaud <greyfox1143@...> writes:
>> I didn't expect to generate so much attention to Ferric Chloride and
>> with that living in Oregon I've been concerned with the environment
>> so is there a environmentally safe method to etching?
> 
> I'm switching to CuCl etching for that reason - nothing to throw away,
> unless you grow too much etchant.  Even then, you can precipitate out
> the copper and recycle it.
> 
> http://members.optusnet.com.au/~eseychell/PCB/etching_CuCl/
> 
> That's what you need the HCl and H2O2 for.

Well Geez, i've been etching with the same tank of FeCl for 2 years.

Enviroweenies need not worry because this stuff is inorganic, just
like the naturally occuring lead, uranium, and radiation in the soil.