A professional who tends semiautomatic machine that abrades hat crowns to remove excess fibers and impart smooth finish. Respnsibilities include:

• Selects hat block, according to size specifications, and attaches hat block to spindle of machine, using screwdriver.
• Turns handwheel to adjust tension of sanding belt against surface of hat.
• Slips hat onto block and moves lever to start machine that sandpapers crown.
• Feels surface of crown to ascertain smoothness of nap, and stops machine when specified texture is attained.
• Turns hat inside out and repeats operation to smooth inside of crown.
• Threads sandpaper from holder over machine guides as sanding belt becomes worn.