Six Sigma After Lean
Ger de Waard, Management Consultant, Netherlands
I cannot agree with you more... To start with lean you start moving the averages, for instance the Lead Time of a process, thereby removing all the waste out of the process at the same time. When you have done that, you start working on reducing the variation out of the process, applying Six Sigma tools and techniques. The results should be an optimized process with predictable output every time again. Of course in the Control Phase you should focus on continuous improvements using Kaizen, PDCA etc... And not to forget making sure your OCAP (Out of Control Action Plan) is in place. Just in case something unexpected happens.