Prototype stereolithography (SLA) is a process which produces a physical, three dimensional object, a conceptual model or master pattern. A prototype stereolithography machine uses a computer controlled laser to cure a photo-sensitive resin, layer by layer, to create the 3D part. Producing a pre-production SLA of a part can greatly enhance the geometric visualization of a product, as well as communication between project team members. For photo-optic stress analysis as well as dynamic vibrational analysis, which further extends engineering design capabilities, a prototype stereolithography model can be used.