A professional who tends high-pressure heating equipment that removes internal solvent bubbles from nitrocellulose rod stock. Respnsibilities include:

• Loads precut rods into cylinder chamber.
• Turns valves to fill cylinder with hot water and admit steam into cylinder jacket.
• Observes gauges and turns valves to regulate temperature and pressure.
• Turns valves to drain water, reduce pressure, and refill cylinder with coolant to set softened and compressed stock.
• Drains coolant from cylinder and removes debubblized rods from cylinder chamber.
• Records number and type of rods processed.