HOW HAS THIS SHIFT AFFECTED MACHINISTS? An order for ten parts may be followed by ten, five or even single-item lots of different parts; workpiece materials may change from steel to aluminum to titanium; part geometries can vary from simple to complex. The resulting increase in setup and tool change time between different parts, however, can have a significant effect on productivity and profitability. Additionally, purchasing a variety of different cutting tools to produce the different parts adds to production costs. 3
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