A professional who tends machine that bonds cope and drag together to form completed shell mold. Respnsibilities include:

• Turns dials of shell-mold bonding machine to heat upper pressure plate and set pressure stroke of ram as specified.
• Positions drag onto lower pressure plate of machine.
• Fills vibrator pan with bonding agent, and pushes button to sift bonding agent onto edge of drag.
• Positions cope on drag, and pushes button or pulls lever which pushes hot plate onto cope to heat and compress cope to drag.
• Knocks out sprue holes with iron rod.
• Directs airhose onto mold to blow out loose sand.
• May tend machine that automatically releases pressure after specified period of time.
• May assemble cores to drag and cope.