Thanks - I guess then that just a water rinse isn't good enough?
Also, do you re-use the baking soda mixture or make a new lot each time?
--- In Homebrew_PCBs@yahoogroups.com, "leeleduc" <leeleduc@...> wrote:
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> 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.
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> --- In Homebrew_PCBs@yahoogroups.com, "tda7000" <Tda7000@> wrote:
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> > 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.
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> > --- In Homebrew_PCBs@yahoogroups.com, "leeleduc" <leeleduc@> wrote:
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> > > 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.
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> > > I've also tried 1 part HCL and 2 parts 12% H2O2 but the reaction was too fast and hot to control easily.
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> > > --- In Homebrew_PCBs@yahoogroups.com, "tda7000" <Tda7000@> wrote:
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> > > > I see some people get very fast etch times with a sponge and ferric chloride...
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> > > > But has anyone tried that method with the HCl and H2O2 solution, or the cupric chloride?
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> > > > Or anything else for that matter?
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