Does alum. shot remove rust? I have tried soda and walnut shells and neither one is aggressive enough to remove rust. I am looking for something that can be used on engine parts as well as body parts if possible. I want to build a large enough blast cabinet and not have to change media when going from body parts to engine parts. I have heard of the dangers of using any kind of sand on engine parts. Would cast aluminum shot be able to clean an engine block and also be able to remove paint and some rust from fenders without damaging them?