From craft to lean: production

Focus Task Product Customer
Operation Single Items Batch and queue Synchronized flow and pull
Overall Aim Mastery of craft Reduce cost and increase efficiency Eliminate waste and add value
Quality Integration(part of the craft) Inspection(a second stage after production) Inclusion(built in by design and methods)


Customization Economics of scale and automation Flexibility and adaptability
Improvement Master-driven continuous imrovement Expert-driven periodic improvement Worker-driven continuous improvement

Six Sigma definitions from different PhD dissertations

“The strategy that provides companies with a series of interventions and statistical tools that can lead to breakthrough profitability and quantum gains in quality, whether a company’s products are goods or services.” (Harry, M., and Schroeder, R. (2006). Six sigma: the breakthrough management strategy revolutionizing the world’s top corporations, Crown Business.)

The word Sigma is a statistical term that measures how far a given process deviates from the mean, which represents perfection. (Isa, Mohsen F. Mohamed, “Quality Modeling And Improvement Of University Facilities Services Using Six-Sigma – A Case Study On Wayne State University Fpm Services” (2013).Wayne State University Dissertations. Paper 5.) Variation in processes is defined as any quantifiable difference between individual measurements; such differences can be classified as being due to common causes (random), or special causes (assignable) Beady, S. (Fall 2005). “Waste On War.” Master in Quality Assurance, California State University Dominguez Hills.. Read more of this post