A professional who sets up and operates numerical-control drilling machine to drill holes into printed circuit boards (PCB's). Respnsibilities include:

• Reviews setup instructions and specifications.
• Loads control media containing programmed commands into control console of machine or enters commands to retrieve programmed control data.
• Attaches depth collars to drill bits and measures bit depth, using depth gauge, to verify specified drill bit cutting depth.
• Measures drill bit sizes, using micrometer, and installs specified drill bits in tool magazine of machine.
• Positions and secures PCB's to indexing table of machine.
• Enters commands to activate machine that automatically aligns indexing table and printed circuit boards under spindle, selects drill bit, and drills holes of specified dimension, location, and sequence into PCB's.
• Monitors machine operation and display readouts to detect malfunctions.
• Compares display data to specifications and notifies supervisor of machine malfunctions.
• Inspects and measures drilled PCB's to verify conformance to specifications, using measuring devices, such as micrometer, plug gauges, and test board.
• Performs machine adjustments and maintenance, such as setting speed and feed rates, cleaning machine parts, and replacing worn or damaged drill bits, using handtools.