Stop plate scratches at the root
Use 5 Whys and A3 thinking to investigate a recurring production defect without stopping at blame.
Repeated defect The same plate scratch appears across three jobs and two shifts. If the team stops at blame, the defect will return under a new job number. Root cause Ask why until the process changes 5 Whys drills below symptoms. A3 keeps the investigation tied to current condition, countermeasure, owner, and evidence. Shortcut Human error is not a root cause until the system conditions are understood. A fix that survives the next shift. A root cause should point to a controllable condition, not just a frustrated label. 01 Frame 02 Investigate 03 Apply fresh Step 1 The supervisor asks…
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