--- In
Homebrew_PCBs@yahoogroups.com, "Leon Heller"
<leon_heller@h...> wrote:
>
> >From: Anthony Toft <toftat@c...>
> >Reply-To: Homebrew_PCBs@yahoogroups.com
> >To: Homebrew_PCBs@yahoogroups.com
> >Subject: [Homebrew_PCBs] CuCl etching
> >Date: Sat, 02 Oct 2004 07:55:29 -0400
> >
> >
> >I am going to be mixing a batch of CuCl etchant today using the
recipe
> >found on the group site. Basically 2:1 3% peroxide:Muriatic Acid.
I have
> >read that I should 'preload' this with some copper, is it
necessary?
>
> It will probably speed it up. You aren't really using CuCl etchant,
it's HCL
> and HO2, and can only be used once. If you treat it properly and
get the
> chemistry right, it may be turned into CuCl etchant.
>
>
> >
> >Also would a used soda bottle be suitable storage for the results?
As I
> >think the etchant will work more than once right?
>
>
> I use plastic milk bottles to store FeCL3 and CuCl etchants. The
HCL I've
> got came in a plastic bottle.
>
> Leon
I store my HCL container inside of a 5 gallon plastic container with
another lid.
Leave a few pieces of copper around your chemicals to see any long
term reaction.
I was getting a nice green on my test strips in a little over a week.
Dave