Tolerances and Surface Finish
In most applications, tolerances can be held within +-0.005 in. For precision application, tolerances can be held within +-0.001 in. It is possible to have a surface finish range of 32 to 500 microinches, but typically the range is 63 to 200 microinches. Finish cuts will generate surfaces near 32 to 63 micro inches, roughing cuts near 200 microinches.
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—Henry David Thoreau (1817–1862)
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