I've done a bunch of intakes and old aluminum wheels with my small sand blaster, works great. Unless you are using one of the huge commercial units, doubt there would be much of a problem.... On the agenda for next week is a new blast cabinet (spelled larger) for the body shop. Going to build this one large enough to do an entire rear end housing. Two sets of holes with gloves to be able to reach the entire housing and maybe even get some help flipping it over once in awhile....