A professional who tends machine that applies finish to felt or fabrics to increase thickness and bulk of material. Respnsibilities include:

• Places roll of material in feed holder of machine, threads end through rollers, and attaches material to rewind spindle, or sews end of material to leader in machine.
• Fills trough with specified sizing and adjusts doctor or fills spray gun tank with specified sizing.
• Rotates air valve knob to adjust spray of size on fabric.
• Turns knob to admit steam to drying rolls, positions lever to set speed of machine, and starts machine.
• May turn knobs to regulate temperature and blowers in drying oven.
• May be designated according to fabric sized as burlap-sizing-machine operator.