Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

I'm a bit curious. I've read online about Photo Etch setups, and one
thing that seems popular is an acid solution that grows as you use
it, basically it uses chemicals that will combine with the copper to
create more acid each time you etch.

What I'm curious is if there is a similiar etching solution that
could be used for Brass? Since I'm interested in photo etching from
a modellers perspective, I'd rather use cheaper brass. :-)

TIA
-Gary