Homebrew PCBs

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