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

I use copper chloride since it can be regenerated indefinitely by
bubbling or by adding a few drops of 30% h202. Concentrated h202
should be readily available locally. Hydroponic suppliers usually has
it. Pool chemical places sells it as a non-chlorine water treatment,
under the name "Baquacil". I bought mine as "food grade h202" from a
local health food store. ($20/liter)