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Job Description:

  • 1) Operates bench lathes to drill holes of specified size in jewel bearings: Sharpens diamond drill, using diamond cutter and other tools.

  • 2) Mounts chuck in lathe and inserts shaped and ground sapphire bearing between jaws of chuck, using tweezers.

  • 3) Starts lathe and holds drill against center of bearing, cutting halfway through.

  • 4) Reverses bearing in chuck and drills through center of bearing from other side until holes meet.




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End Of Job Description for: "JEWEL-BEARING DRILLER"
DOT:   770.682-014

Job Number: 5469