I am painting a motorcyle for a freind. It has a custom made frame from round tubing with a bunch of brackets and stuff welded on. I can get the paint on just fine when i go to clear it no matter what i do i end up with runs. I dont know how many times i've tried the tank and fender were no problem its just trying to clear this round tubing. Would i be able to sand and polish this thing? I only have a 8" buffer dont think that would be a good idea? Maybe if i borrowed a smalller one would that work? Has anyone tried to polish something similar to this? The whole frame is basically round tubing. Thanks to anyone that may have suggestions i'm going crazy with this thing.