A professional who sets up and operates automatic machines to grind, mill, and secure shunt leads to carbon and graphite brushes. Responsibilities include:

• Reviews work orders to determine size, type, and number of brushes to be produced.
• Installs grinding wheels, cutting blades, and tamping tools on machine shafts and turns setscrews to adjust cutting and grinding mechanisms and width guides according to specifications, using handtools.
• Observes panelboard to detect and remove jammed brushes.
• Verifies dimensions of brushes, using micrometer, calipers, and ruler.
• May be designated according to machine operated as concaving-machine operator; heading-machine operator; tamping-machine operator.