Lean thinking aims to remove wastes from work processes. Before diving into the 8 wastes, it is important to understand what waste is. Waste is any action or step in a process that does not add value to the customer. In other words, waste is any process that the customer does not want to pay for. The original seven wastes (Muda) was developed by Taiichi Ohno, the Chief Engineer at Toyota, as part of the Toyota Production System (TPS). The seven wastes are Talent, Inventory, Motion, Waiting, Overproduction, Over processing and Defects. They are often referred to by the acronym ‘TIMWOOD’. The 8th waste of non-utilized talent or ‘Skills’ of workers was later introduced in the 1990s when the Toyota Production System was adopted in the Western world. As a result, the 8 wastes are commonly referred to as ‘TIMWOODS’.

1. 8 Wastes in Lean
Lean thinking aims to remove wastes from work processes. Before diving into the
8 wastes, it is important to understand what waste is. Waste is any action or step
in a process that does not add value to the customer. In other words, waste is any
process that the customer does not want to pay for.
The original seven wastes (Muda) was developed by Taiichi Ohno, the Chief
Engineer at Toyota, as part of the Toyota Production System (TPS). The seven
wastes are Talent, Inventory, Motion, Waiting, Overproduction, Over processing
and Defects. They are often referred to by the acronym ‘TIMWOOD’.
The 8th waste of non-utilized talent or ‘Skills’ of workers was later introduced in
the 1990s when the Toyota Production System was adopted in the Western world.
As a result, the 8 wastes are commonly referred to as ‘TIMWOODS’.
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2. 8 Wastes of Lean Six Sigma
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3. Lean Principles
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The five-step thought process for guiding the implementation of lean
techniques is easy to remember, but not always easy to achieve:

4. Six Sigma Methodology
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Six Sigma has two key methodologies −
•DMAIC − It refers to a data-driven quality
strategy for improving processes. This
methodology is used to improve an existing
business process.
•DMADV − It refers to a data-driven quality
strategy for designing products & processes. This
methodology is used to create new product
designs or process designs in such a way that it
results in a more predictable, mature and defect
free performance.
There is one more methodology called DFSS −
Design For Six Sigma. DFSS is a data-driven
quality strategy for designing or redesigning a
product or service from the ground up.

5. DMAIC Roadmap
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Problem Solving in 30 steps

6. DMAIC Tools
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