- Waste is any activity that does not add value.
- Value is any activity that transforms the product in a way the customer is willing to pay for. customers typically don'r want to pay for:
- Material handling
- Overprocessing or even inspection
- The lean steps:
1. Specify value - from the customer, as the customer always defines value
2. Identify the value stream - map all the current steps needed, including value-added and non-value-added, of the product and its components (material flow) and the instructions among all steps (information flow)
3. Create stability - get processes on control: equipment, people and material
4. Make value flow - develop and implement a future state maps where we processes are linked
5. Let customer pull - link customer demand: mix and volume.
6. Pursue perfection - repeat all over again.
This principles help us identify waste and provide ways to help us to reduce it.
w manufacturing is building the product in a continuous manner w/o any stoppages or bracktracking.
We should always try to create continuous one-piece flow first and when we can't flow, we should pull through a signaling method (e.g. kanban)