Homebrew PCBs

"Chuck Hackett" <egroupscdh@...> writes:
> I'm looking for higher concentration H2O2 to try my hand at Toner
> Transfer board etching.

You don't need it.

Go to the drug store or supermarket and get a bunch of the generic 3%
hydrogen peroxide bottles.

Go to the hardware store (Lowes or True Value, for example) and get
some muriatic acid/HCL - it's in the paint isle, used as a concrete
primer, usually 37% strength.

Add one part HCl to two parts peroxide (add acid to peroxide, not the
other way around) and etch.

This should cost you less than $10.