Just dunk the tool in spent pickle. It’ll copper plate quite nicely.
I’ve never tried to do this deliberately, so part of me wonders if
the reaction won’t shut down once the surface is totally covered in
(Or, I’ve never tried to get a thick copper coat this way, so I’ve
never really cared how long the reaction lasts, or how thick the
deposition layer was.)
The Other Brian (Who doesn’t do the cool eyeglasses that Kiwi Brian