One thing I should mention. I keep a bowl with about 1 quart of water and 1/4 cup of baking soda dissolved in it. When I'm done, I toss the foam brush and any tools I've used into the bowl to neutralize any acid on them. I do the same with the PCB, quick dip in the bowl and a quick rinse under the the tap and I'm good to go.
--- In Homebrew_PCBs@yahoogroups.com, "tda7000" <Tda7000@...> wrote:
>
> Sounds good, I think I will try that. Like the idea of a foam brush, should be easier to use than just a kitchen sponge and less messy.
>
>
> --- In Homebrew_PCBs@yahoogroups.com, "leeleduc" <leeleduc@> wrote:
> >
> > 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?
> > >
> >
>