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Job Description:

  • 1) Laps metal objects, such as gauges and machine parts, to specifications within tolerances as fine as 0.

  • 2) 00001 inch, applying knowledge of abrasives and lapping procedures: Measures workpiece with instrument, such as optical comparator, compares workpiece dimensions with specifications to ascertain amount of stock to be removed, and estimates number of lapping strokes required.

  • 3) Mounts workpiece in fixture, or in power-driven mechanism, using wrenches and keys, and positions work aids, such as parallel bars and rods to guide motion of lap I or workpiece.

  • 4) Files grooves in surface of lap to hold lapping compound.

  • 5) Applies compound to workpiece and rubs lap across workpiece with rotary or reciprocating motion, feeling friction and applying required pressure based on previous experience, to attain specified tolerance.

  • 6) Measures workpiece to verify conformance to specifications, using special gauges.

  • 7) Straightens or polishes rods by inserting and pressing them between two rollers with lapping compound.




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End Of Job Description for: "LAPPER, HAND, TOOL"
DOT:   705.481-014

Job Number: 5724