Over the years, I noticed that it is possible to lump most factories in one of four categories: Level 1: the recently-created and unstructured workshop; Level 2: the semi-organized factory that got out of level 1 but that is still … [Read more...]
Archives for August 2013
A realistic dynamic inspection plan for checking China production
Last week I pointed out the limits of QC inspections based on random sampling. My conclusion was: If having 3% of defects in a batch can incur very high costs (likely to wipe your margin out and cause a loss in customer confidence), random … [Read more...]
How to avoid human mistakes in production? The lean approach.
As Shigeo Shingo wrote, "humans are animals that make mistakes". But how often do we make mistakes? For example, trained military technicians make mistakes 20% of the time in simulated emergency situations. Scary, isn't it? You can … [Read more...]