9.2.5. A metal plunger holder can be used in the changeover of plungers. At least one should be kept by each forming machine at all times. It is to be used by the Forming Machine Operator when changing plungers and coolers on individual sections. The required number of plungers and coolers are to be placed on the changeover holder and carried over to the forming machine. The dirty plungers are to be placed on this holder and taken to the dirty equipment bench ready for pick-up by the Mould Engineering Department. (Refer Schematic 9.6.4).