Perforated metal is a product of numerous mechanical processes. Its production is simple, yet complex, and its uses are without limits. Metal was first perforated or punched back in the 1870's in Carbondale, Pennsylvania. Eli Hendrick an inventor and entrepreneur, conceived the idea to punch multiple holes simultaneously in the raw materials to refine the process of drilling holes individually which was both time consuming and costly. This idea revolutionized the production of perforated...