I just got a couple of razors from a local antique store, and I am using them to learn how to hone (they were like $7 each). I do have a question. If I can get these American Made Razors shaving, there is some rust on the shank and tang of each blade. How would y'all recommend getting this out of a razor? Steel wool? Sand paper? What grit? Just a question for y'all.