I want to clean up and strip my axle, splash guards, drums and stuff to get ready to paint. I don't have access to a sand blaster so was wondering what tools would be best. The guy at my auto parts store showed me a couple. One was a wheel looking thing kinda like scotchbright pad but black and much stronger (this goes on a drill). The other was a bunch of twisted metal strands on a drill arbor. Is either one better or do I want both or neither?