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Job Description:

  • 1) Tends lapping machine that polishes flat surfaces of round jewel bearings: Blocks in molten shellac in circular row near outside edge of flat, circular steel block.

  • 2) Sets blocks, usually four or five at once, in holding chuck and turns screw press to force blocked jewels against diamond dusted revolving lap.

  • 3) Observes polishing to detect signs of overheating and removes hot block for cooling before shellac melts and jewels are damaged by being turned on edge.

  • 4) Examines finish of jewels for appearance with loupe and verifies thickness with upright dial gauge.




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End Of Job Description for: "FLAT SURFACER, JEWEL"
DOT:   770.685-010

Job Number: 4099