A professional who tends steam oven that heats liquid plastics in glass molds (cells) to form sheets. Respnsibilities include:

• Examines and removes defective molds from handtrucks.
• Loads trucks holding molds into ovens and records time molds entered ovens.
• Turns steam and cold-air valves to maintain specified pressure and temperature in oven.
• Inserts knife into baked sheet or feels sheet to determine that sheet is baked to specifications.