Originally Posted by FBinNY

+1 this is the way to do the job if you're too impatient to wait for it to happen naturally.

OTOH, if you're talking about hard anodizing, that olive colored finish reminiscent of Calphalon non-stick cookware, be aware,that it's a thicker coating and will take a lo-o-o-ong time to remove even with sandpaper.