A professional who tends hydraulic press that shapes hats, hatbrims, or crowns. Respnsibilities include:

• Selects shaping die, according to specifications, and positions die in recess of machine bed.
• Positions saddle (rubber hat-shaped liner) in die to protect hat during pressing.
• Pours water into tank of machine and turns valve to regulate level of water in rubber pressing bag, attached to machine ram, according to size of hat to be shaped.
• Inserts hat, crown down, into die.
• Moves lever to lower ram and water-filled bag against brim or into crown to press hat, brim, or crown.
• May be designated according to hat material as straw-hat-hydraulic-press operator; according to hat part shaped as brim presser ii; crown presser; or according to processing stage as second blocking-machine operator; first pressing hydraulic press operator.
• When tending machine that shapes hatbrims between flange (brim-shaped collar) and water-filled bag, is known as hydraulic-brim-flanging-machine operator.
• May be designated: band-plating-machine operator; panama-hat-hydraulic-press operator; wool-hat hydraulicker; woven-paper-hat-hydraulic-press operator finisher.