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Subject: Re: [Homebrew_PCBs] Blue CuCl etchant...
From:
"Herbert E. Plett" <cachureos@...>
Date:
2006-05-03
--- William Kroyer <
william.kroyer@...
> wrote:
> ... but I'm guessing it's "reguvinated" by simply adding
> more HCl or H2O2.
in other words: you are pouring more 'pure' etchant into the weakened solution!
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