Convert slivers into yarns or threads by combing processes converting drafting card sliver to combed sliver. Form short fibre to yarn using yarn and thread processing technologies, mostly ring spinning or open-end spinning (rotor spinning) or alternative spinning techniques. Work in the drafting or drawing process converting sliver into roving and converting roving into yarn, through further drafting and twisting processes. Work on winding machines to reel the yarn from bobbins onto spools or cones.