After refinishing my winter set of old Bunt Cake rims I have learned that it is quite a major job to sandblast rims down to the metal. It cleans up any areas that are corroded easily, but if you want it perfect, it takes forever. Maybe I needed a bigger machine but the cabinet was 3x3x4'. I wound up dusting them off with the sandblaster and painting with aluminum paint. There are blemishes but they look good from 2 feet away.

I have a set of 1985 AMG rims that were originally painted then turned on a (CNC) lathe then clear coated. There was corrosion. I had them stripped, painted, turned (the bespoken lines or machining marks) then clear coated. The problem is that when the wheels are forged there is a layer of higher density on the surface. By the time they are turned at the factory then turned again at the refinisher it has removed the higher density layer and exposes a more porous surface, which show up as microscopic bubbles. They look 1000% better than before but it is far from perfect. I do not recommend having rims turned for this reason. Have them polished and/or painted.

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Steve
1985 Mercedes 500SL Euro (Gray market)
1995 BMW 520i Euro (Gray market)
1992 BMW 525it Wagon
1994 Honda Del Sol Si