A professional who tends machines that bleach or dye skeins of yarn. Respnsibilities include:

• Hangs yarn skeins over perforated rack.
• Turns valves to fill dye vats with water, and turns knob to set temperature of water according to specifications.
• Pours chemical softeners and liquid dyes into vats according to formula.
• Starts machine that rotates skeins periodically and circulates dye through yarn.
• Dumps dye solution from vats at end of dyeing cycle and circulates rinse water through yarn.
• Loops several skeins of yarn together to form bundle and removes yarn bundles from perforated racks.
• Places bundles of yarn into boxes.
• May load and unload machine, using chain hoist.
• Important variables may be indicated by trade names or machines used.