Scottish sculptor and installation artist David Mach’s body of work is impressive, to say the least. With some 30 years of experience, Mach has found compelling ways to gather mass-produced found art objects into flowing formations. His “Matcheads” are particularly striking (pun intended), composed of unstuck colored match sticks arranged to look like the patterned surface of a face. Mach sometimes ignites these match pieces as a form of performance art. Be sure to also check out his work with coat hangers and magazines, among others. Unbelievable work