I spent about $40 for everything and already had some of it lying around. It sure beats blasting parts in the driveway. Here's how: First I started with a clean 55 gallon barrel. This is the type with a removable lid. I got this one for free and it was clean on the inside. Youll have to search around for one. The door: I cut the lid as shown and added a piano hinge ($5) for easy access. The existing holes were the perfect size for the shop vac hose and the blast hose inlet.