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Ted Mooney, P.E. RET
Pine Beach, NJ

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Need Ra 3.2 finish on Delrin

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.
Regards

Charles Hills
Tool & Die Maker - Union, New Jersey
June 10, 2010

Most manufacturers of measuring tools have roughness testers.

Guillermo Marrufo
Monterrey, NL, Mexico
June 14, 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
June 22, 2010

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