Homebrew PCBs

On 26/11/2011 18:00, DaveC wrote:
>  >...
>  >HCl/H2O2 is very fast anyway, but it could probably be useful for CuCl2.
>  >
>  >Leon
>
> -=-=-=-
>
> I found it not so fast. I etched a 5" x 10" 1-sided board (consisting
> of several duplicate small circuits) and it took almost an hour. I
> started with a fresh batch, just enough etchant to cover the board
> but added more as time dragged on.
>
> Maybe my mix is wrong? I'm using 15 percent hcl (muriatic acid) and 3
> percent h2o2 at a mix of 1:1.
>
> What mix are you using?

It was a long time ago, I can't remember. IT would have been 30% HCl, 
because that is what I have available. It only took about 30 seconds, 
though.

Leon
-- 
Leon Heller
G1HSM