polished frame was my winter project. aircraft paint remover worked some, but i got the best results using a powered sander & 60 grit sandpaper. then worked my way up to a final wet sanding with 2000 grit. then buy a couple of jars of Mothers aluminum polish. and have at it. trouble is keeping it clean. about every 2 weeks i have to give it a quick polish job.
If you want to get it done perfect, the best way is to take the bike completly apart and send the frame to me :evil !!! That's what I do for a living for the last 15 years. If you take a look at the pics of my 11, the only chrome bits on it are the steel bits, EVERYTHING else is polished. The guys that are telling you that you have to polish the stuff every couple of weeks or once a month, well thats because the job wasn't done correctly from the start. I don't have to polish miine more than twice a YEAR!! (unless I get caught in the rain, even then if you wipe it down right away it will not be water-spotted).
Hey guys thanks for suggestions... I still wanna go with the polishing I dont mind keeping it shiny I spend alot of time cleaning on my bike once a week anyways so dont mind every now and then doin some on frame.
I have a polished frame and love it. Personally I think polished looks better than chrome. Also I have a '75 Kaw Z1 that got the fork legs chromed some time in the '80s. Now over 20 years later that chrome is trash. Its all crackly looking a flaky and just plain horrible. I don't know how worried about longevity you are or how far into the future you look, but I think the polished look will stand the test of time much better.