Creels machine and threads yarn ends through machine guides, over feed rollers, air-jet chambers, tension guides, and drop wires.
Loops end of yarn around takeup spool.
Turns valve to start compressed air through jets to blow loops into yarn filaments, changing physical structure of yarn. Observes processing of yarn to detect breaks in yarn and filled takeup spools. Ties broken yarn ends. Pulls lever to stop spindle and doffs full package. Important variables may be indicated by trade name of texturing process or machine used.