Acoustic steel guitars used in Hawaiian music are made completely out of wood (with the exception of the tuning hardware), and some resonator guitars are made out of steel or brass but aren't steel guitars due to the manner in which they are played.
Enigma machine | Rage Against the Machine | Automated teller machine | Victor Talking Machine Company | head | Soft Machine | head of state | Beavis and Butt-head | Alec Head | Murray Head | Head Start | Anthony Head | The Time Machine | Linotype machine | Head Start Program | Vickers machine gun | Diamond Head | DeLorean time machine | Darne machine gun | Rube Goldberg machine | MG 17 machine gun | Human head | Head teacher | The Wolseley Sheep Shearing Machine Company | Machine Head (band) | Machine Head | KPV heavy machine gun | Head Over Heels | Head of the River Race | Eddie the Head |
During the summer of 2012, Battlecross was announced to be participating in the inaugural Rockstar Energy Mayhem Festival Cruise in December 2012, with Lamb of God, Anthrax, Suicide Silence, Hatebreed, Machine Head, and others.
In December 2005, Graziadei and Evan Seinfeld performed Biohazard's "Punishment" with Dino Cazares of Fear Factory, Andreas Kisser of Sepultura, Adam Duce of Machine Head and Joey Jordison of Slipknot.
An early breakthrough was its use by Colin Richardson and Andy Sneap, two "seminal" British producers of heavy metal; especially Machine Head's Burn My Eyes (1994) helped the 5150 gain a reputation for its sound, which "defined a generation of guitar tone".
Twin Method's debut album The Volume of Self was released on June 13, 2006, and produced by ex-Machine Head/Soulfly guitarist Logan Mader.
During Ugly Kid Joe's inactivity, Crane went on a year-long tour with New York hard rock band Life of Agony before forming Medication with ex-Machine Head guitarist, Logan Mader.
Demmel joined Machine Head shortly before the recording of the 2004 album Through the Ashes of Empires.