Homebrew PCBs

Lee Studley <indigo_red@...> writes:
> http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/

See also http://members.optusnet.com.au/~eseychell/PCB/etching_CuCl/

I've been trying to get set up to do this, but it seems that the
"starter etchant" has a short shelf life, so make it when you've got
boards to etch!  That way you convert it to a CuCl etchant before it
stops working as an HCl/H2O2 etchant.