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

Greetings!

I have a question for everyone concerning the "wet method" of printed circuit boards. I was wondering what other types of etchants are available besides your basic ferric chloride, and sodium persulphate? I remember a while ago someone mentioned the use of sodium persulphate catalyzed with either hydrochloric acid or sulfuric acid. What does this mean and how can I do it? Basically I think it would be very interesting to experiment with high speed etching methods!

Thanks!

-Randy Knutson



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