University of California, Berkeley – Space Computed Axial Lithography (SpaceCAL)

Computed axial lithography (CAL) is a new type of additive manufacturing. Unlike conventional 3D printing where objects are formed layer by layer, CAL forms objects all at once by rotating a vial of photopolymer while exposing it to a complex set of projected images, very similar to a CT scan. Since parts are formed all at once, they typically form in minutes or less, much faster than other printing processes. This process can enable printing into high-viscosity fluids or even solids as well as around preexisting solid objects. The SpaceCAL payload has conducted two parabolic flights and Galactic 07 was its first spaceflight. Given the sensitive light needed to image and cure the 3D printed objects, Virgin Galactic will be built a dark room in its hangar for the team to conduct its pre- and post-flight work.