Twin sheet pressure forming is done with machinery specifically designed for this process. MAAC Single Station and MAAC Double Ender Twin Sheet machines are designed to use the single-oven twin sheet technique. This process consists of two sheets to a frame; one upper, one lower, and a single index. MAAC Shuttle Twin Sheet machines feature our heaviest and most accurate, “zero deflection”, air cell lockup high pressure forming platens and are available with multiple control system options.