Keith Zinn is the president of the Industrial Perforators Association and executive vice president/chief financial officer at Diamond Manufacturing Company, 243 W 8th Street, Wyoming, PA 18644, 570-693-0300, perf@diamondman.com, www.diamondman.com.
Here is an outline of the various functions of perforated metals, the impact of punching on a metal’s properties and the difficulties of punching for a non-expert.