Archive of the former Yahoo!Groups mailing list: Homebrew PCBs
Subject: Re: [Homebrew_PCBs] Re: Using Cupric Chloride
From: Tom Biery <judsquare@...>
Date: 2011-09-27
Can someone please tell me why not just use Amonium Persulfate. It seems freely available, that is what I am using and it works fine, I find that if maintained at a temperature of 120 degF the etching is complete in 20 minutes. What am I missing?
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