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Re: gEDA-user: PCM making methods - was - Re: alarm clock update
Christoph Lechner wrote:
> So you simply mix a HCl/H2O2 etchant the usual way. When you begin to
> use the etchant, it's bluish.
No. Yellow-green for full etching strength.
After some time (and some PCBs) it becomes
> green. Dark green, and when loaded with copper, black.
So when it's green it's CuCl etchant, isn't it???
Pretty much.
John G
--
Ecosensory Austin TX
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