DEMO — fictional range. Local brief only, NOT SENT. No personal data is collected or transmitted.
REVISION
A mould revision is a stock revision.
A change to a moulded part changes every unit already in the warehouse, because the old ones are still saleable and the new ones look identical.
- Revision letter
- Every change, however small, gets one
- What changed
- The feature, the value and the reason
- Tooling impact
- Whether the mould has to be altered or remade
- When it took effect
- Which batch was the first made to the new revision
- What it supersedes
- Which revision the new one replaces
- Stock
- Whether old and new may be sold together
| Rev | Change | Reason | Tooling |
|---|---|---|---|
| A | Handle moved 12 mm towards the base | Full can tipped forward in the hand | Mould altered |
| B | Seal changed to silicone | Gasket hardened in the first summer | None |
| C | Flange thickened 2 mm | Cracking under ultraviolet exposure | New mould |
Why the stock column belongs on the log.
Because two revisions of a moulded part are visually identical. If the log does not say whether they may be mixed, they will be mixed, and the failure appears later with no way to tell which unit was which.
The habit worth copying.
Recording which batch was the first made to the new revision. Without it, a batch sits between two revisions and nobody can say which tool made it.