A professional who sets up and adjusts machine tools, such as lathes, milling machines, boring machines, drills and punch presses, grinders, gear hobbers, and plastic molding machines for other workers, such as production-machine tenders, according to specifications and tooling instructions, applying knowledge of machining methods. Respnsibilities include:

• Reads blueprint or job order for product specifications, such as dimensions and tolerances, and tooling instructions, such as feed rate, cutting speed, depth of cut, fixtures, and cutting tools to be used.
• Installs and adjusts holding device and fastens specified cutting and shaping tools in position to enable operator to produce finished workpiece to specifications, using handtools, such as wrenches, screwdrivers, and pliers.
• Selects and sets speed and feed of machine according to type of operation and specified material and finish.
• Starts machine to obtain first-run workpiece and verifies dimensional tolerances, using micrometers, gauges, and templates.
• Changes worn cutting tools and adjusts operation of machine, such as cutting speed, feed rate, or depth of cut, when required.
• May replace parts on machines, such as bearings, filters, wiring, and switches, using handtools.
• May instruct operators or other workers in machine setup and operation.
• May set up machines and equipment other than machine tools, such as welding machine and flame cutting equipment.