Do tears appear and disappear randomly in your stampings? Have you tried the typical solutions - brainstorming, grinding/welding, etc. - every trick in the book, with zero success in making the tears disappear? Almost every press shop has experienced this frustrating problem. Attacking it by measuring, tracking and controlling the 40 or more forming-input variables is not feasible. Even worse, difficult forming problems usually involve a synergistic interaction of two or more input variables. Conducting a 40-variable full-factorial Design of Experiments (DOE) to determine these interactions is unrealistic.
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