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Trimming is the removal of excess metal from a stamped part to allow the part to reach the finished stage or to prepare it for subsequent operations. This article presents an analysis of parts to be trimmed and describes the selection criteria for the different types of trimming dies such as conventional trimming dies and cam trimming dies. It provides information on rough and finish trimming and construction details of trimming dies. The article reviews the selection criteria of presses for a trimming operation. It provides a discussion on the scrap and material handling processes in trimming.

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2006. "Trimming Operations", Metalworking: Sheet Forming, S.L. Semiatin

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