The best way to reverse staining by copper etchant in a stainless steel sink?
I was thinking there might be two ways to minimize the appearance of these stains:
1. Could I just dremel the very surface off with a fine sandpaper/stone?
2. Could I use electrolysis in a small area to try to at least pull the copper off the sink?
There is some dark staining which I assume is some acid that ate through some of the steel, but the copper is the most obvious problem. I doubt there's a good method to remove what I assume is the acid staining other than trying the dremel.