A professional who tends machine that winds thread, twine, or yarn into balls preparatory to shipping or further processing. Responsibilities include:

• Places supply cones or spools on creel rack and threads yarn ends through guides and tension device.
• Pushes core over spindle of machine or wraps end of thread around shaping device of coreless winder.
• Pulls lever to start machine to wind specified amount of thread.
• Doffs balls of thread, using knife to cut thread.
• Inspects balls for defective winding or soiled thread.
• May insert labels under thread.
• May place ball on device to crush center and wrap end of thread around center as binder.
• May pack balls into boxes for shipment.