A professional who feeds milled rubber stock into rolls of calendering machine to maintain continuous supply. Respnsibilities include:

• Lifts pig (roll) of rubber stock from warmup mill conveyor and pushes it between horizontal rotating rolls until stock is drawn between and rolled around calender rolls.
• Turns wheels or capstan bolts to adjust distance between rolls to produce sheeting of specified thickness.
• May mount roll of backing material, such as sponge rubber, insole mixture, or cloth fabric, in cradle and thread it through rolls for coating with rubber.