Homebrew_PCBs

On Mon, 06 Mar 2006 13:18:32 +0100, idaho_huckleberry <dmiller45@...>
wrote:

> What strength of HCL and H2O2 did you use? I went shopping for Muratic
>
> acid and found some at 37%, the H2O2 was 12% (listes as "40" on the
>
> side of the bottle) from my local Salon supply store. Are these stong
>
> enough to etch PCB's or should I look for stronger stuff?
>
>
> Dave Miller

the H2O2 is a bit weak, so will add more water, but it should work fine.
You can freeze-concentrate H2O2, but i don't think it's needed.

ST