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This document provides information on techniques for designing product flow, including flow diagrams and charts. It discusses ways to reduce costs such as eliminating unnecessary steps, combining steps, and rearranging steps to streamline flow. Specific examples are given of combining multiple machining operations into a single step to reduce handling, queuing, and other delays. Procedures for developing flow diagrams are also outlined. The diagrams are used to visualize and analyze the product flow process, including potential issues like cross-traffic or backtracking.