A professional who tends high-speed warpers that automatically wind yarn in parallel sheets onto beams preparatory to dyeing, weaving, or knitting. Responsibilities include:

• Examines yarn in creel to ensure that yarn corresponds to warp pattern sheet specifications, for number of yarn ends, arrangement of yarn in creel, yarn size, and color.
• Requests creeler to alter creel setup to correspond with warp pattern sheet.
• Pulls yarn ends from packages mounted on creel, through drop wires, and tension, measuring, and spreading devices, and fastens ends to empty warp beam to thread machine.
• Sets yardage counter to record amount of yarn wound and starts machine.
• Observes operation to detect yarn breaks which cause machine to stop.
• Turns beam back to point of break, locates and ties broken ends, and cuts excess yarn, using scissors.
• Stops machine when specified yardage is wound on beam, cuts yarn, and places gummed tape over ends or loops ends together to secure ends.
• Doffs full beams and sets in empties.
• May wrap beam with paper.
• May replace empty yarn packages.