Classify glass-defect cause ideas into 6M fishbone categories.
Sort each glass-defect theory into the best fishbone category. Materials Machines Methods Measurement People Environment Cullet load had mixed color contamination Feeder tube wear increased instability Restart checklist skipped verification sample New defect code split scratches into two categories Relief operator had not been trained on this inspection trigger Draft near inspection table changed cooling exposure Scale calibration expired before batch check Mold cooling passage partially blocked Raw material moisture rose after unloading during rain
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