Originally posted by Bullitholz:
600 grit 3M wet or dry paper(the good stuff) lubed with light oil. Get ready as the stainless is HARD on these and it takes a LOT of work to get the lines out. Then jewelers rouge on a felt wheel, a dremel really makes this part an easy 5 minute job. Of you can do the Mothers mag polish thing with a soft rag and a lot of elbow grease.
If I were going with the latter route I would work up the sandpaper grit ladder first to make the final hand polishing easier. For example, start with 400, then 600 then 800 and then 1000 or 1200 grit....then the compound. Work through each until all of the scratches from the previous grit have been removed, working down to a finer finish with each one.
This not hard but it does take time to do.
Here's my 4506: