Choosing Control Limits When Your Assembly Line Just Changed Over
A practical note on recalculating SPC limits after fixture swaps, operator rotation, or supplier material batches — without discarding useful historical context.
Field Notes
Writing from the plant floor and the review room
Practical notes on defect reporting, chart selection, and meeting structure — grounded in engagements with manufacturing quality teams across the Republic of Korea.
Handover Sheets That Plant Managers Actually Read
Most shift handover documents fail because they report everything and highlight nothing. Here is how three Gangnam-area plants restructured theirs.
Pareto or Run Chart? A Decision Guide for Weekly Quality Meetings
Teams often default to Pareto charts because they look decisive. Run charts answer a different question — and mixing them up wastes meeting time.