A professional who tends battery of machines that flare mouths of shell cases to facilitate insertion of bullets. Respnsibilities include:

• Lubricates and starts each machine and starts flow of compressed air to cool chamfering tools.
• Observes cases sliding down feed and discharge tubes, repositioning any that are out of order.
• Observes cutting tools in operation to ensure proper functioning and replaces, sharpens, and resets them as necessary.
• Examines samples from each machine for burrs, ragged edges, or scratches and determines that dimensions are within prescribed tolerances, using variety of gauges and measuring tools.