Process Effects Committee Report

Process Effects Committee Report

Fall 1985

Carl Whinery, Northwest Chemical Milling, Inc.

For those from the United Kingdom and others who did not participate in the Round Robin Testing Program, Phase One and Two, I would like to review and bring you up to date. In 1981, the PCMI decided that a standard test pattern would be helpful. 1) The pattern consisted of a one inch diameter, circular tapers, step and repeated on 1.25 inch centers over a 10 inch square area.

For our test procedure, several sheets of material were exposed and developed utilizing the test pattern. The pattern was etched with attention placed on the orientation of the sheets of material.