A professional who sets up and operates plodder machine to compress milled soap into bars. Respnsibilities include:

• Unbolts head of machine and inserts specified plate that shapes and sizes bar.
• Opens valves to admit steam into heating coils, water to reduce heat caused by friction on compression screw, and create vacuum to draw soap through machine.
• Unbolts filter cap from machine and changes filter.
• Starts machine.
• Inspects compressed bars for specified color, size, and smoothness.