Tumble Blasting is another automated way to provide a blasted finish on parts. Different from table blasting in that parts are loaded into a chamber onto a heavy duty, perforated belt, which then rotates, forcing the parts to tumble on top of each other inside the machine. A wheel directs shot onto the parts at a high velocity, and is an efficient way to remove heat treat scale, rust, or to prepare for paint adhesion. Parts must be durable enough to withstand part on part contact.