A professional who operates one or more electrical-discharge machines to shape metal workpieces to specifications, following standard charts. Respnsibilities include:

• Obtains from job order or verbal instructions such information as electrode to be used, depth setting, and number of workpieces or cavities to be shaped.
• Mounts specified electrode in preset holder on spindle.
• Positions and secures workpiece on machine table or places it in fixture.
• Moves controls to align electrode and workpiece and to set electrode feed rate, depth limit, and electric current.
• Starts machine, turns on flow of dielectric coolant, and observes operation.
• May inspect work visually or with measuring instruments.