A couple years ago I dug up what looks like a very old axe head. Not a typical axe head , it's more like the head of some hand tool that once was used for hand hewning wood beams. Anyway , it is heavily rusted on the surface although it is still strong underneath all the rust.How can I get this layer of rust off? After electricuting myself to near death last year with a mr.coffee machine I'm going to stay far away from any electrolosis-type method .