[Kirk]

If you talk to an anodizing company they can usually control the buildup +/- .0004. You just have the bearing bores machined oversize by the amount that the anodize will build up and you are good to go. The buildup (growth) on a standard hard anodize is usually in the range of .002 - .005.

This is what we had to do with the teeth on the gears. When I hobbed the gears we cut them .002 undersized to allow for anodize buildup. In the end everything worked perfectly.