From rack to road (yet another Cannondale 2.8 build).

Whatever you do, don't sand blast an aluminium frame, you'll wreck the tubing. They need a softer media, like glass bead blasting.

Well it seems fine. I got it done through a bike shop where he's had aluminium frames stripped (and then powder coated) before.

I don't actually know if it was sand blasted or media blasted though.