oh .. can I mix and store this ? or is it a mix , use and discard ?
and are there disposal issues ?
________________________________
From: Randy S. <rj3819@...>
To: Homebrew_PCB <homebrew_pcbs@yahoogroups.com>
Sent: Mon, February 21, 2011 8:29:51 PM
Subject: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
FR-4 doesnt have to be green colored? Correct ?
Other question .. for making etchant ..
I saw 2 parts peroxide to one part muriatic acid ( 34% hydrochloric acid )
and I saw 3 to mix as well ..
Is it crucial ? I mean I guess the only thing that it would change is the
etching
times .. and the fumes LOL .. ??
Randy
[Non-text portions of this message have been removed]Message
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Randy S.