A cut-to-length heating system including a heating cable having a first conductor with a first resistivity and a second conductor with a second resistivity. The extruder barrel and extruder screw are contained within a mold plate of the injection molding system with a drive mechanism of the auxiliary injection unit being external thereof. Holes are formed through the chamber end wall to pass cooling air onto an upstream face of each deflector. A magnetic storage medium is located proximate to the magnetoresistive sensor.