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surface finish question 1

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caseynick

caseynick

Mechanical
Joined
Sep 22, 2005
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Is the "cutoff length" the same as the length the stylus of a profilometer travels? I am pretty certain they are not the same, but have been told they are.
 
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No. The cutoff length is the length over which the trace is evaluated. Generally the length of trace is made up of 6 cutoff lengths. Example: length of trace 1.5mm would have a cutoff length of .25mm. The cutoff length is generally selected based on the periodicity of the surface finish.
 
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