polishing aluminum help?!?
Use 1200 to 2000 grit. Your sandpaper is way too course! The paper probably got gummed up With aluminum particals. Use water or oil to wash away particals. In other words wet sand it. Then get this polish called Mothers Aluminum Polish. And two micro fiber cloths. Use the mothers and wipe off with first towel. Then use second towel. Trust me! I spend alot of time in my machine shop making custom aluminum parts. If you can trickle water over the surface of what your polishing it helps. The 1200 to 2000 grit can be purchased at Walmart in the auto section.