Start with 400 grit sand paper on a dual action air sander and remove scuffs, scratches, gouges will come out for the most part as you advance through the sand papers, sand off the rough casting pebble finish. Remember tight tiny areas are a bugger to polish later, that is why I left the upper portion of the down tube, besides the radiators cover that entirely. Moving on... follow that with 800 grit on the D.A. That is to be followed by 1000 or 1200 grit on the D.A. Next get a squirt bottle and fill with water, and now use 2000 grit, by hand wet sand. It will now start to take on a bit of a shine, if you are not worn out now, wipe it down and look very close for and sand scratches left by the DA because they will show later, also look for any pits you missed and depending how deep they are you may have to go back a step or two. When you are satisfied with what you see, I polished mine with a Matco 3" air buffer with a wool pad. Use Mother's Aluminum polish as the compound or similar product. Buff it to a mirror finish, dont worry about the black compound that is gummed up in the welds and cast marks you will take care of that next. I might stress this point... use air tools!!!!!! Hand sanding will be a pain. And anything less than an air buffer will not get the mirror finish, it swirls the compound but also builds a little heat which helps...believe me. Now inspect it again, fix anything you don't like. If you are satisfied, take it to a pressure washer. I laid mine down on bubble wrap because the shine will show every little scuff and scratch now. Use car wash soap, it is mild. If you use dish soap you will remove some of the aluminum polish and be buffing again. Wipe it down with a car wash mit, especially at the welds and cast areas that hold the black compound. then pressure wash the soap/ compound off. Immediately blow the frame off with compressed air, untill no more water comes trickling out, water spots you know. Then tape it up with painters tape, the not so sticky stuff, if you need to reassemble. That's it in a nut shell, how I did it anyway.
