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Flat Lapping Experts

Carbide Cutters and Tools
Lapping

The Challenge:
To Lap and Polish to .0001" flatness, maintain 4 Ra finish, with no edge chipping allowed

Part Specifications

Material C2 Carbide
Previous Operation Sintering
Dimensions .980" major diameter  x .144" thk 
.530" center relief

Pre-machined Condition

Thickness .146" ~ .149"
Surface Finish 63 Ra
Flatness .002"
Parallelism .002"
Presentation Supplied in near-net form from carbide sintering.

Results:

Thickness .144" .002"
Surface Finish 4 Ra Max
Flatness .0001"
Parallelism .001"
Notes No edge chipping visible at 10x magnification, near mirror polish. This is a great example of simplifying manufacturing through lapping. This part was produced start to finish in just 3 steps: Sintering, Lapping, and Polishing.
 

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