On Sat, 29 Aug 2020 21:26:52 +0100, Ahem A Rivet's Shot
wrote:

On Sat, 29 Aug 2020 18:49:06 +0100
"Brian Gaff \(Sofa\)" wrote:

I wonder if some kind of reverse electrolysis is possible?

The term you're looking for is electroplating - doing it well is
not simple.

While electroplating is a black art, "electrolytic rust removal" isn't.

Gives excellent results, pretty simple, doesn't break anything* -- but it will
not remove rust in inaccessible spots, the current has to "see" the surface...


Thomas Prufer




* unless an electrode containing chrome is used: this can create carcinogenic
chrome salts.