Marc's Patented Prototype Example
His unique prototype is intended to provide the basic concept for OEM fabricators to build larger and more elaborate versions as production machines. He made his prototype machine from scrap plywood, 1-beams, and miscellaneous equipment laying around his boatyard. The outer shell of the prototype is a 4 x 4 x 8-ft I-beam reinforced vacuum chamber made from several layers of plywood. Inside, a two-piece mold assembly (usually made from fiberglass) bolts together and rotates about an axis. More-complex shapes, such as car bodies, would rotate about two axes.