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

I’m considering HCL and peroxide.  I just got intimidated when I saw a video and the guy showed all the steps required to handle it all safely.  Ferric is a lot less troublesome.

I kind of liked the vinegar peroxide solution I was using.  The only problem I had was that it was slow, and would often eat under the resist.  And it seemed as though it had very limited staying power.  However to test my theory that the ferric was discoloring the boards, I put a couple of scrap pieces in and long after I thought the solution had worn itself out, the next day I discovered it had etched all the copper.  So it’s very slow but still active… tempted to try a sample etching to see how badly it goes after the resist if just left for the day.