A professional who tends machine that abrades hat crowns to impart smooth, finished appearance. Respnsibilities include:

• Selects specified hat block and installs block on machine.
• Moves lever to clamp block in place and pulls hat over block.
• Starts machine that starts block rotating and forces sanding pads, arm, or abrasive wheel against surface of hat to smooth crown and impart specified texture.
• Removes hat, turns hat inside out, and repeats sanding operation to smooth and finish inside of crown.
• Removes hat and inspects it for smoothness of finish.