so i have a dirtbike and i wanted to polish the swing arm.i have 100 grit,400,800 and 1200.i use to 100 to take off the coating the swing arm has and once its off its like a natural aluminum left.well i polished it before and it came out real good to a mirror finish.well i did the other half of the swing arm exactly the same even with new sand paper and it just didnt shine like the other half!i wet sanded it and i used car wax as my buffing compound,yes i used a soft buffing wheel.the car wax works really good!thats how i got the first half to a mirror shine but the other half just wasnt working for me.any suggestions?oh and i sanded in all one direction.
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.
