Homebrew PCBs

I use this technique all the time. I can do a 4X6 inch board in about 2 minutes. I use 1 Part HCL and 2 Parts 3% H2O2. I make just enough etchant to cover the board about 1/8 to 1/4 inch and lightly brush the surface with a foam Paint brush. I etch at room temperature. Works very well for me.

I've also tried 1 part HCL and 2 parts 12% H2O2 but the reaction was too fast and hot to control easily.



--- In Homebrew_PCBs@yahoogroups.com, "tda7000" <Tda7000@...> wrote:
>
> I see some people get very fast etch times with a sponge and ferric chloride...
> 
> But has anyone tried that method with the HCl and H2O2 solution, or the cupric chloride?
> 
> Or anything else for that matter?
>