In the tooling phase of thermoforming a single 3D form is created out of aluminum, wood, polyurethane, or a 3D printer. In injection molding, a double-sided 3D mold is made from aluminum, steel, or beryllium-copper alloy. There is an advantage in timing and price with thermoforming since prototype samples can be made from CNC cut wood tooling. Tooling costs for large product tooling are substantially less with thermoforming.