I just started checking into this myself and here's what I've found so far...I'm going to try the oven cleaner on some old anodized parts and see how it goes....Another option is Eastwoods anodizing remover kit...Now for the bad news..I started checking on the bright dip process and it turn out the parts must be darn near flawless with no road rash,scratches, etc... Or the bright dip anodizing magnifies all the imperfections... Even though I thought the bright dip was a touch expensive for what it is,it did'nt even compare to the price of getting the parts I had into shape for the actual process...So it looks like I'll be sitting in front of the buffing wheel for a while !!! I've seen parts with small imperfections that have been re-anodized and it does in fact bring them out and some of the bright dipped parts with pits looked like white spots under the coating... ... So what I'm trying to say is to have the parts looking real good before the process for the best results...