Within Lean there tend to be strive to remove stock to the point problems start emerging. However, there is also sometimes necessary to have a buffer stock between processes and also sometimes a delivery buffer.
Buffer:
Used to even out variations in customer demand or unevenness within the production process. Within Lean we strive to have as low buffers as we can so they don’t become muda (waste).
Defining the sources of waste we start with the most recognised, Muda
Muda:
Waste. It could also mean uselessness or wastefulness. It can be defined as 7+1 wastes: Defects, Overproduction, Waiting, Transport, Inventory, Motion, Excess Processing and Wasted talent. Within Lean the elimination of Muda is a central concept.
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“If you are not willing to learn, no one can help you. If you are determined to learn, no one can stop you.”
– Zig Ziglar
“It ain’t what you don’t know that gets you into trouble. It’s what you know for sure that just ain’t so.”
– Mark Twain
