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Making Stainless Steel Masters for Highway Reflectors

Frank Cooke

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Abstract

Over many years, the following procedure has been evolved and makes good pins. The material is Carpenter’s 420 stainless steel drawn to a hex, hardened and ground. All steps and fixtures are shown. It has been found necessary to do only one pin in one groove. Any bunching up gave optical failure.

© 1974 Optical Society of America

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