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Control chart software defaults to enabling all eight out of control rules, which may seem very "rigorous." However, eac…
A certain automotive parts factory submitted a new project process capability report to the original equipment manufactu…
Introduction: These 12 Questions Almost Always Appear in Every SPC Training Session After each SPC training, the questio…
1. The Trouble with a Batch: 1 Piece or 8 Defects? In the inspection records of a coating workshop, there was such a lin…
1. Reviewing the Scene: Two Conflicting Numbers A process capability review at a precision stamping factory. On the proc…
1. A Workshop Where "Control Charts Have Been Drawn for Three Years" In the spring of 2026, I witnessed a scene at a pre…
A quality engineer in a heat treatment workshop has been staring at a "control chart that doesn't look like a control ch…
When it comes to SPC control charts, most workshops immediately think of the X̄ R chart: measuring dimensions, torque, a…
In a hydraulic valve body workshop, the bore diameter is a customer specified special characteristic with a tolerance of…
1. A Meeting Held Three Times Without a Conclusion A car parts company's bracket hole size, after six months of mass pro…
1. Why Did No One Look at the Chart After Seven Days A machining workshop in an automotive parts company once implemente…
1. A One Size Fits All Approach Leads to a Year of False Alarms A certain electronic component company's SPC implementat…