[nuttyman]

wo wo wo!!!

1. de-grease
2. blast or buff, depending on your desired result
3. if it is cast Al then outgas
-- let cool, wipe down with denatured alcohol, blow off and shoot it.
4. if it is not cast Al you don't need to outgas, just wipe it down, blow it off & shoot it.

I use 100% polyester (lint free) rags. If the part is cast & is very old you might need to outgas more than once. If you experience nasty outgassing that you can't rid yourself of you can shoot a base-coat, cool it, sand it, wipe it down & shoot your color coat. there are some tricks you will learn when dealing with troublesome outgassing.