| Job Title |
Lapper, Hand, Tool |
| Job Description |
Laps Metal Objects, Such As Gauges And Machine Parts, To
Specifications Within Tolerances As Fine As 0.00001 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. 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. Files Grooves In Surface Of Lap To Hold Lapping
Compound. 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. Measures Workpiece To Verify
Conformance To Specifications, Using Special Gauges. Straightens
Or Polishes Rods By Inserting And Pressing Them Between Two
Rollers With Lapping Compound.
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