Sculptor and creator of performance-type constructions, painter and collagist, and teacher, born in Methil, Fife. From 1974–9 he studied at Duncan of Jordanstone College of Art, Dundee; then from 1979–82 he pursued a postgraduate course in sculpture department of Royal College of Art. Settled in London. Mach had a one-man show at Lisson Gallery in 1982. The following year he was commissioned to create his huge Polaris Submarine as part of The Sculpture Show at the Hayward Gallery, for which he used old car tyres. Mach went on to travel the world creating many such objects using the cast-offs from consumer society, as his comment on it. His belief was that “If it’s a good idea then it shouldn’t matter how long it lasts, five minutes or forever.