THE QUESTION
Why do parts that passed inspection come back?
The root causes, deepest first. Disagreements stay on the map.
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The map
Root causes on the left, outlined in green. Tap a claim to see its chain.
a link the room certified contested: the room could not settle it
Every claim on this map, with its own address (12)
Each page says what the room certified around the claim, with the counts, and can be cited, embedded, or read as JSON.
FOUND BY THIS ROOM · 10
| Customers changed their inspection method and never told us | → | Coolant is changed when it smells, not on a schedule |
| → | Operators are paid on parts per hour | |
| Rework is not counted anywhere | → | Quotes are won on price, so cycle times are cut to the bone |
| The same operator runs the same machine for years and nobody checks th | → | The drawing on the floor is not the revision the customer ordered |
| Tool wear is judged by ear | → | Deburring is done by whoever is free |
| Deburring is done by whoever is free | → | Parts that pass our inspection fail the customer's |
| → | The customer's returns log and ours do not match | |
| Quotes are won on price, so cycle times are cut to the bone | → | Operators are paid on parts per hour |
| → | The oldest machine makes the tightest-tolerance part | |
| Parts that pass our inspection fail the customer's | → | The customer's returns log and ours do not match |