Abstract: A duality of portable, lightweight, rapid process and highly efficient injection molds for the mass production of structural insulated polystyrene building panel systems. The non metallic and non conductive molds and mobile supporting base platform are impervious to drastic degrees and fluctuations of positive or negative air, moisture and temperatures. A complete production run per mold is accomplished in approximately 1 minute while absent all time, labor, energy, materials and costs for pre heat cycles as well as all time, labor, energy, materials and costs for cycles of massive amounts of cooling fluids while rapidly self cooled by negative air. The molds can operate simultaneously or alternately while supported by common material feed hopper, air, hydraulic unit and steam/heat supply reservoir.