Looking to clean my putter up a bit with a refinish...problem is that I believe it was originally the charcoal mist finish which i think was essentially a black nickel plating. It has partially/half way worn off so what would be the best way to remove the rest to bare metal so I can just gun blue the carbon steel? I know the coke/clr/naval jelly method will not work as from what i know, the charcoal mist was applied using a plating process..any help would be great...my only guess would be sand paper and sanding it down..if so, anybody ever done it and could possibly include steps and grit levels...thanks