***We're about to launch our next fabrication project: 3D printed sugar! Follow us on twitter @thesugarlab*** This is ‘Phantom Geometry’, a masters thesis in architecture by Kyle von Hasseln and Liz von Hasseln, developed in the Robot House at the Southern California Institute of Architecture (SCI_Arc). It was awarded the inaugural Gehry Prize at the SCI-Arc commencement ceremony on September 9. This work is centered on the development of a system for generating material volume from streaming information. The system uses UV light from a modified DLP projector to continuously and selectively cure photo initiated resin within a shallow vat system we developed for the project. The cured part is simultaneously and continually pulled away from the vat, allowing un-cured resin to flood in beneath it to be subsequently cured. The result is the material reification of streaming data that emerges along the motion path of the Staubli robot maneuvering the vat/projector apparatus. This system of fabrication relies upon native real-time feed-back and feed-forward mechanisms, and is therefore interruptible and corruptible at any time. The streaming data input may be transformed or modified at any time, and such interventions impact emerging downstream geometry. Thanks to Brandon Kruysman, Jonathan Proto, Peter Testa, Devyn Weiser, Nazareth Ekmekjian, Robert Cervellione, vade001, Fernando Muñiz of Spot-a Materials, Erin Besler, Marcelyn Gow and Andrew Atwood. Thank you also to Frank Gehry and SCI_arc for honoring this work with the Gehry Prize.