Archive of the former Yahoo!Groups mailing list: Homebrew PCBs
Subject: [Homebrew_PCBs] HCl Etchant Question
From: Mark Lerman <mlerman@...>
Date: 2010-03-22
As I understand it, the H2O2 is used to provide oxygen to the HCl,
but using 3% peroxide slows it down because of dilution of the
HCl. Has anyone tried just bubbling some oxygen through the HCl? Or
is this just too dangerous to contemplate?? Thought I'd ask before
trying. <smile>
Mark