Homebrew PCBs

>From: "gettingalongwouldbenice" <gettingalongwouldbenice@...>
>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