Of all the tools in the lean toolkit, 5S is the one that has proven to be the most effective—and also the most elusive. It’s effective because the actions needed to sort, set in order, shine, standardize, and sustain mirror the deeper, critically important philosophy of thinking about value, waste, and flow with a “big picture” mindset. Once an organization has adapted lean thinking and initiated 5S projects, improvement begins to accelerate in all operational phases.

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