When you Etch with Ferric Chloride, you Create Cupric Chloride.
I Can't believe Cupric Chloride will etch copper at all. But if
you've added enough muratic acid, that acid will do the etching, all
by itself.
Gary
--- In
Homebrew_PCBs@yahoogroups.com, "Leon Heller"
<leon_heller@h...> wrote:
>
>
> >From: "gettingalongwouldbenice" <gettingalongwouldbenice@y...>
> >Reply-To: Homebrew_PCBs@yahoogroups.com
> >To: Homebrew_PCBs@yahoogroups.com
> >Subject: [Homebrew_PCBs] Regenerating etchant??
> >Date: Sun, 14 Nov 2004 15:06:04 -0000
> >
> >
> >
> >In the files section are instructions for
> >making etchant from muratic acid and hydrogen peroxide.
> >
> >Sounds like something interesting to try.
> >
> >As I understand it, you stick in the board and the copper goes
> >into solution. You regenerate the solution by bubbling air
> >through it. Ok, so where does all that copper go when you
regenerate???
>
> It's converted to cupric chloride, which is quite a good etchant in
it's own
> right, if the pH is correct.
>
> Leon