I followed the directions as such...
2 parts common hydrogen peroxide
1 part muriatic acid
The acid is the common type sold at hardware stores and the hydrogen peroxide was also
the commonly available for everyday use - grocery store purchase.
--- In Homebrew_PCBs@yahoogroups.com, "Morris Odell" <vilgotch@...> wrote:
>
> Hi all,
>
> I've been using FeCl3 for longer than I can remember but the solid form is
> getting hard to find these days. I'm looking at alternatives such as CuCl2.
> Most of the procedure looks pretty straightforward.
>
> What concentration of H2O2 did you use? Was it the commonly available "10
> volume" from the pharmacy or do you need something stronger?
>
> Morris
>
> >
> > I have been etching for a while now with ferric chloride. Today I
> > made up a different home brew based on information found on
> > instructables. This consists of two parts hydrogen peroxide and 1
> > part muriatic acid. The final step was to etch some boards which will
> > eventually convert this mix to Cupric Chloride.
>