I love to polish aluminum bicycle parts. I actually like a highly polished aluminum surface better than chrome. That is as long as I don't start off with an clear anodized part. I use a lot of 3M 401Q Imperial 2000 and 3000 Wet or dry paper. My current polishing project is a set of NOS Mavic Module E clincher rims. I don't have a buffing machine so everything I do is by hand. It's a bit hard on the arthritis but it's well worth it in the end.