Operate or tend twisting machines that perform winding processing and manufacturing operations, such as winding, twisting, knitting, weaving, and cutting, using knowledge of machine functions. Exclude textile sewing machine operators and tender, Adjusts machine controls, such as width or tension guides, to keep operations within specifications. Mounts, positions, or places roll of material, yarn, or line, or bobbin of thread on machine and threads through guides and rollers. Sets controls on machine according to width, length, or other specifications, and sets counter to record yardage used. Operates machine to cut material into specified lengths