This body of work started when Hornby was shortlisted for a commission to make a permanent sculpture for the cast courts at the V&A in London. His design was for a twelve-metre long ‘stalactite’ formed by taking the outline of Michelangelo’s David and extruding it to a single point. While he did not win the commission, the research that went into the project would go on to form the basis of Hornby’s solo exhibition Nick Hornby: Sculpture (1504–2013) at Churner and Churner in New York and the concurrent public commission: God Bird Drone, also presented in New York in 2013.

The basic principle of this ongoing body of works is a single silhouette extruded and then an action performed, such as reduction to a point, twisting, enlarging and so on. Unlike the Intersection works, the Extrusions to date have involved no combining of sources, only simple manipulations of a single source. As with other bodies of Hornby’s work, digital technology plays a significant role in his design and production processes for the Extrusions. Subsequent Extrusion pieces include a console table for David Gill Gallery, London, and a number have been exhibited at Glyndebourne.