A professional who assists card grinder in setting up and repairing cotton and synthetic fiber carding machines and picking machines. Responsibilities include:

• Cleans machines of waste and excess fibers from previous run, using airhose.
• Inspects machines and machine parts to detect wearing of or damage to parts.
• Replaces defective parts, such as rollers, belts and gears, using handtools.
• Adjusts clearance between carding and doffing cylinder and between flats, using leaf, flat, and pen gauges, and listening for contact of surfaces.
• Adjusts machine parts, such as prefeeders, evenfeeders, and levers, to regulate speed of machine, flow of fiber, and length of lap.
• Grinds wire teeth of flats and carding and doffing cylinders, using grinding device.
• Inspects teeth to verify grinding meets specifications.
• Lubricates wearing surfaces of machine, using oilcan.