A professional who sets up and operates machine to cut mortises and tenons in fibrous insulating board and acoustical tile. Responsibilities include:

• Installs and adjusts flange, bevel, tongue and groove cutters, holddown rolls, and lug guides, using handtools.
• Turns wheel to position and adjust width of feed chains to ensure depth and squareness of cuts.
• Starts machine and automatic feeding conveyor, and observes each phase of processing.
• Measures sample products for squareness and depth of cuts, using square and jigs.