Job Description:

• 1) Tends semiautomatic lathes that face and chamfer rim, cut diameter to size, and impart finish on watch balance wheels: Places balance wheel on locating pin in nest of quill, heats quill nest, wheel, and shellac stick to melt and apply shellac, using Bunsen burner.

• 2) Places quill in holder of semiautomatic shellacking machine and presses button to start machine that heats and melts shellac.

• 3) Presses wheel into nest and cools shellac to secure wheel in position.

• 4) Places and clamps quill in lathe, exercising care to seat parts to prevent damage to diamond cutters.

• 5) Presses button to start and run lathe through machining cycle.

• 6) Removes quill from lathe, heats nest, and removes wheel, exercising care to prevent damage to wheel.

• 7) Places wheel in alcohol to dissolve and remove shellac.

• 8) Examines finish and gauges outside diameter of wheels to ensure specifications are met, using loupe and micrometer or fine gauge.

• 9) Removes old shellac from quill, using Bunsen burner and brass wiping tool.

• 10) Lubricates and cleans quill and machine as needed.