Re: primer for aluminum
Quick wipe down with acetone and the Starmada group usually uses rattle can Rustoleum Self Etching. One coat is enough if you are not doing any more "body work".
As stated. if you are looking for a "perfect" finish, after the first primer is dry, you will need a coat of "high build" primer. After it dries, a "guide coat" and long board sanding, filling, repeat, repeat, ...
