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

Hi everyone,

I noticed that a few people have mentioned regenerating a cupric chloride etching solution with a few options: aerating it with a fish pump, adding Hydrogen Peroxide, or even using some form of electrolysis.

Has anyone had any long-term success with this process? How long does it take to aerate? Is there any excess waste that needs to be dumped eventually? Are there any circuits I can create to duplicate an electrolysis setup?

I'd greatly appreciate more details on anyone's success or any insights on maintaining a CuCl2 solution for use over and over again. If I can duplicate a setup, or make my own, I'd be happy to write up a tutorial.

Many thanks in advance!

Sincerely,

Poofjunior