Homebrew PCBs

Volkan Sahin wrote:

> 
> It seems peroxy-sulfuric etcher won't etch tin etch resist and it is
> possible to obtain  stabilizer  from think&tinker in low volume.



I don't know why Stefan Trethan says that, i also said lots of very
wrong things in here already, but is really bad when we induce people in
mistake. 

The peroxy-sulfuric will etch tin without additives. The stabilizer is
for the 35% - 50% hydrogen peroxide don't decompose in explosion when
you put a copper board in there.

I also wish to use a sulfuric based etchant but not like this. 
Did you read the patents i mentioned?