Quote Originally Posted by speedminded
Fat 5's are machined polished correct? Meaning they have the fine ridges, like microscopic ruffles, where it was cut...if you don't smooth down those ridges 100% then it won't ever have a mirror like reflection.

High speed is the key too. You can get a polishing kit for a cheap electric drill too, won't work nearly as well as a pneumatic high speed polisher but far more effective than by hand.

http://search.harborfreight.com/cpis...PerPageBottom=

I polished the last 36" of this 3" exhaust by hand with a pneumatic polisher and various compounds, it was bare aluminum before...
yeah they have the ridges and they are completely gone...