Homebrew PCBs

On Thu, 11 Jan 2007 18:15:09 +0100, Lez <lez.briddon@...> wrote:

> But can battery acid be used as an etchant?
> Lez


Sulphuric acid can be used in combination with H2O2 regeneration in a  
copper sulphate producing process similar to CuCl. There was some good  
reason why CuCl is better for homebrew use, but i can't remember it now.

ST