On Sun, 30 Aug 2020 06:19:30 +1000, "Rod Speed" wrote:

Brian Gaff (Sofa) wrote

I wonder if some kind of reverse electrolysis is possible?

No its not. It can stop corrosion happening in the first place
in some situations but cant remove the rust once its happened.

Wrong: it is called "electrolytic rust removal" for a reason.

Thomas Prufer