The Hawthorne Effect in Quality Management: Building Systems That Survive Without an Audience
Why your factory runs perfectly during an audit and regresses by Friday afternoon — and how to engineer quality systems…
Lean Systems
139 articles
Hanedashi: The Missing Mechanical Mechanism Wrecking Your Cycle Time and First-Pass Yield
Manual part transfer between stations consumes up to 20% of cycle time and generates untraceable defects. Auto-ejection is the cheapest…
Quality Andon Systems: Why Nobody Pulls the Cord
The hardware is installed, the cord is hanging, and the authority granted. Operators still refuse to pull it. Here is…
Quality Yamazumi: How Line Balance Determines Defect Rates
A stacked bar chart of operator cycle time exposes the structural causes of quality failure. Here is how to build…
Micro-Stops: The Hidden Capacity and Quality Loss in Automated Production
Sub-minute machine pauses evade standard OEE monitoring but consume up to 18% of available time. Here is how to detect,…
Quality Standard Work: Eliminating Method Variation on the Production Line
Uncontrolled operator method is the largest source of process variation. Here is the mechanism for documenting, deploying, and sustaining standard…
Quality Gemba Kaizen Events: Structured Shop-Floor Improvement in Five Days
How to design, execute, and sustain a kaizen event that delivers verified process improvements by Friday afternoon, using the talent…
Quality Fatigue: How to Recover a Stalled IATF 16949 or AS9100 System
Quality initiatives stall not from resistance but from exhaustion. A practical framework for closing open loops and rebuilding a system…
Jidoka: Building Autonomous Quality Stops Into Your Manufacturing Process
Why the most powerful quality reflex is a machine that stops itself. A practitioner's framework for implementing autonomation across three…
Applying the Theory of Constraints to Quality Systems
Why spreading quality effort equally across every process wastes money. A practical framework for directing quality investment where throughput actually…