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Improving Efficiency in a High Mix, Low Volume Machine Shop

March 20, 2014 / , ,


There is no question that lean techniques have changed the face of manufacturing. Kaizen programs, 5S, value-stream mapping, and other lean strategies have rendered impressive results in high-volume manufacturing plants around the world. However, not every lean principle is an off-the-shelf solution for operational efficiency. This is especially true for high-mix, low-volume manufacturing environments.

Machine shops that cut metal are often juggling multiple jobs—many of them custom and almost none of them the same. Production requirements, lead times, and due dates can vary, which makes forecasting and traditional lean concepts difficult to apply. That’s not to say, however, that high-mix operations can’t get lean. As the following examples demonstrate, lean and other improvement techniques can be modified to increase efficiency in even the most customized job and machine shops.

While high-mix, low-volume operations certainly present a unique set of production challenges, these case studies reveal that there are several strategies managers can put in place to reduce waste, optimize flow, and improve productivity. It may take a little research and some creativity, but leading-edge machine shops are finding that in today’s competitive market, the benefits are well worth the investment.