Tumble barrel machines are the most basic forms of vibratory mass-finishing equipment. Tumble barrels, also known as rotary barrels, rotate and turn the mass of media, compound, water, and parts. Tumble barrels are the pioneering predecessors to vibratory finishing and high-energy finishing. Compared to the newer technology, tumble barrels are typically an inefficient process. They do not create enough momentum to properly move the parts through the media mass.