Archive of the former Yahoo!Groups mailing list: Homebrew PCBs
Subject: Re: [Homebrew_PCBs] HCl Etchant Question
From: DJ Delorie <dj@...>
Date: 2010-03-22
It's not oxyGEN you need, it's an oxiDIZER you need. Bubbling oxygen
through the solution can re-oxidize the chemicals that are there (such
as with CuCl etchant), but oxygen alone isn't enough to work with plain HCl.