A professional who sets up and operates blow molding machine to mold plastic products according to specifications. Respnsibilities include:

• Turns valves to start flow of water and release air pressure to machine.
• Moves machine controls to set timing unit and temperature of heating unit and start automatic feed mechanism.
• Adjusts machine mandrel and aligns mandrel with mold chamber, using wrenches.
• Starts molding machine that automatically feeds material from mixing unit to mandrel and to mold chamber.
• Closes chamber to mold product under heat and pressure.
• Removes workpiece from mold after timing device opens mold, and trims excess material from workpiece, using knife or bandsaw.
• Regrinds excess material and unsatisfactory workpiece for reuse, using grinding machine.
• May weigh completed workpiece to determine accuracy of machine operation.