Motograter is an American nu metal band. They are best known for their homemade instrument the "motograter" - designed with industrial cable and guitar pieces that creates a very deep bass sound. The "motograter" instrument originally took place of the original bass guitar but now accompanies it. The band is also known for painting themselves in a tribal style body paint for concerts. Motograter was founded in San Antonio, Texas in 1995 by Bruce "Grater" Butler playing the Motograter