Mark Lerman wrote:
> I don't make a lot of boards, and most of them are quite small, so
> I've been looking for a simple, fast way to etch. After experimenting
> with a few suggested recipes, I use a 1:1 ratio of muriatic acid
> (31.45%) to 12% hydrogen peroxide.
It's been 60 years since Chem 101, and I don't recall - do I add the
acid to the H2O2 (water), or the other way around?
Also - someone mentioned a magnetically coupled aquarium pump for liquid
agitation. Is this an easily found item? All I've seen in pet stores
are the air bubbler pumps.
Norm
W6NIM