Description and Benefits: This machine uses a broad spectrum light source to cure photopolymers by projecting 2D images using a Digital Micromirror Device. This machine was developed by students in the lab; and unlike commercially available machines, the hardware and operating software of this process can be completely customized for more specialized applications. The constrained surface design cures photopolymer layers between a glass plate and the previous layers. The newest layer is peeled from the glass, which is coated in oxygen inhibiting PTFE Teflon to reduce adhesion. This allows for an economically advantageous process that requires less photopolymer and has a vertical build rate greater than other projection stereolithography systems. The peeling process performed in the constrained surface technique, however, limits the achievable minimum feature size.