Knot Feeder was a math rock band from Pittsburgh featuring ex-members of Don Caballero, Tabula Rasa, and Southpaw.The band consisted of guitarist Mike Banfield (ex-Don Caballero), drummer Rob Spagiare (ex-Tabula Rasa), guitarist Andrew Grossmann (ex-Tabula), and bassist Andy Curl (ex-Southpaw).They recorded a CD with J. Robbins in 2007, which was released on January 24, 2009 at The Smiling Moose.