Hello fellow home brewers,
On Tue, Jul 18, 2017 at 2:26 AM, 'Brad9; unclefalter@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:
the resulting etchant is way less unpleasant than ferric
It is possible to etch very fast and very well if you use concentrated ferric chloride. It is easy to do and generates a tiny amount of waste.
Forget about baths of the stuff. When you're done, you have one cotton ball and a tbsp of etchant to deal with.
I have tried ammonium persulphate, traditional ferric chloride baths, and HCl/H₂O₂, and this method IMO beats them all.
Mitch.