Job Description:

• 1) Covers wax foundry patterns with coating compound to form shell mold used in lost-wax casting process: Dips pattern in suspension of silica sand and chemical binder.

• 2) Coats pattern by sifting materials, such as sand or aluminum oxide, onto pattern; or places patterns in tumbling barrel, containing short fibers, to strengthen coating.

• 3) Repeats coatings as specified to form shell.

• 4) Examines pattern for evenness of coating.

• 5) Places coated pattern clusters on cart and pushes cart into drying room, or places shell molds on conveyor of tunnel oven to dry mold interiors.

• 6) May place patterns in steam-pressure vessel to melt pattern wax from shell.