Cleaning rusty parts with Electrolysis

[pug306driver]

Seen an article that shows this in a tractor magazine.

If the connections are swapped around and tin cans used, will the tin plate come off the tins and be plated onto the work piece??

Cannot get quantities of copper sulphate, if I could I would mix up a solution and place work piece in it, self copper plates.

This happened to one of my spanners many years ago, and it was still copper plated for years. I will go thru my boxes and see if I can find it.