Hey guys my friend wants the lip on his new wheels dipped. It has a fine machine brushed lip. He just wants the lip of the rim dipped. Obviously I can't sand it but don't want to ruin the machined look. I have a nice sandblaster filled with 100 grit aluminum oxide. is that the route to go? Included is a picture of said rim lip. It's tough to see the machined finish it's almost like a multiple perfect raised ridges a brushed look. This may have a term if so what's it called?