Archive of the former Yahoo!Groups mailing list: Homebrew PCBs
Subject: Re: Photo Resist
From: "caveteursus" <j.walton@...>
Date: 2002-11-22
Adam -- I think that 5% NaOH is overdoing it -- not that Sodium
Hydroxide is expensive -- but I think that 3% is fine. 5% will blow
the photoresist right off the copper. Of course, if it's just
one-shot then mix a capful of drano with 100ml of water and let her rip.