A professional who supervises and coordinates activities of workers engaged in machining metal castings used in molding glassware. Respnsibilities include:

• Pours sulfur mix into rough casting to obtain plastic model of object to be molded.
• Verifies dimensions of model against blueprint, using micrometers and calipers, to determine machining operations required to prepare casting for use as mold.
• May operate wood lathe to turn patterns for bottle molds.
• Performs other duties as described under supervisor master title.