So I think Cape Cod Cloths are the perfect solution, which makes sense since they are for polishing fine metals. Here is the jetpack with one side polished and one side not. What’s perfect is it’s finely abrading the tarnish away so you can leave the specific amount of tarnish behind that you want with no risk to the finish below. Any hazing you may see is actually a little oil from the cloth that needs to be completely cleaned. These are the finest polishing cloths you can find and do not leave any scratch marks.
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I’ll be recording the process soon and post a before and after.