On 26/11/2011 12:02, 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? > I used to use a soft brush, until the ferric chloride dissolved the metal holding the hairs. HCl/H2O2 is very fast anyway, but it could probably be useful for CuCl2. Leon -- Leon Heller G1HSM
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Re: [Homebrew_PCBs] Sponge etching with HCl and H2O2?
2011-11-26 by Leon Heller