Hello I am an owner of a small Tool & Die co. and I am quoting on a small job and need to know, what can I use or how can I measure a RA 3.2 on black Delrin? I gather from the information on this sight that it is rather high polish.
Charles Hills Tool & Die Maker - Union, New Jersey
June 14, 2010
Most manufacturers of measuring tools have roughness testers.
Guillermo Marrufo Monterrey, NL, Mexico
June 22, 2010
The Ra number may not be the problem. Part size and how it is made will determine the process to achieve the finish.
AF Kenton retired business owner - Hatboro, Pennsylvania
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