Short answer: Revision cut-in control prevents mixed ຊິ້ນສ່ວນປັ໊ມ when drawings, finishes, tooling, packaging, or inspection rules change. The RFQ should define the effective date, first approved lot, old inventory disposition, label wording, sample approval, documentation update, shipment hold rule, and how buyer, ຜູ້ສະໜອງ, and receiving inspection identify the correct revision.
A revision change can be simple on paper and messy in production. Old parts may be on the shelf, new parts may be in trial, packaging labels may use the old revision, and receiving inspection may not know when to accept the new condition. For ຊິ້ນສ່ວນປັ໊ມ, even a small drawing change can alter fit, force, finish, or assembly sequence.
Use this page with the lot traceability guide, first-off and last-off lot guide, golden and limit sample guide, and incoming inspection checklist.
Revision cut-in details to settle early
| Control point | Why it matters | RFQ evidence |
|---|---|---|
| Effective point | Calendar dates alone may not match production lots or open orders. | PO line, lot number, ship date, build date, or first approved lot. |
| Old inventory | Good old-revision parts may need use-up, scrap, rework, or segregation. | Quantity list, location, disposition, and buyer approval. |
| Labels | Receiving may reject good parts if cartons do not show revision clearly. | Label sample, barcode rule, mixed-lot ban, and photo evidence. |
| Approval samples | The first new revision shipment should not surprise assembly. | First-off parts, dimensional report, photos, and retained sample. |
Decide whether the change is fit, function, or paperwork
Some revisions only update a title block or drawing note. Others change hole position, burr side, material, finish, bend angle, carrier tab, cleaning, packaging, or inspection method. The cut-in plan should match the risk. A paperwork-only change may need label updates. A functional change may need samples, reports, and shipment approval.
When the revision affects a controlled feature, connect it to the critical dimensions inspection plan and datum and functional gage guide. If the change affects surface condition, use the cosmetic versus functional defect boundary guide to avoid confusing appearance changes with functional changes.
Control old and new lots physically
Revision control fails when old and new parts are both correct but mixed. The ຜູ້ສະໜອງ should separate open inventory, WIP, finished goods, and returned parts. Labels should show part number, revision, lot ID, quantity, PO, and shipment date. If the buyer allows old-revision use-up, the approval should be written and tied to a quantity or end date.
For high-volume parts, ask how the ຜູ້ສະໜອງ handles partial cartons, reels, trays, and customer-owned stock. A reel or tray may keep the right orientation but still carry the wrong revision label. For packaging-sensitive parts, connect the plan to the packaging transit validation guide so new labels and pack formats are checked together.
RFQ details to include
- Old drawing revision, new drawing revision, reason for change, affected features, finish change, material change, or packaging change.
- Cut-in rule: first lot, first shipment, PO line, build date, ship date, customer approval date, or depletion of old stock.
- Old inventory quantity, WIP status, finished goods, buyer-owned inventory, use-up approval, rework plan, scrap rule, or return rule.
- Label format, barcode data, carton photos, mixed-lot ban, retained samples, and how receiving inspection will identify the revision.
- Sample approval, first-off or first article evidence, dimensional report, functional test, photos, and document update list.
- Normal release quantity, safety stock, launch timing, and who can approve shipment when timing is urgent.
How to compare ຜູ້ສະໜອງ answers
A strong answer explains how the ຜູ້ສະໜອງ will identify old stock, separate WIP, update labels, and prove the first new lot. A weak answer only says the revision will be updated in the system.
Ask for a sample carton label and a cut-in record before the first shipment. These simple documents often reveal whether purchasing, production, quality, warehouse, and receiving are using the same revision rule.
Send old and new drawings, open order data, inventory expectations, and receiving rules through the contact page. Use the RFQ form to request a revision cut-in plan when mixed revisions could stop assembly.
FAQ
What is revision cut-in for ຊິ້ນສ່ວນປັ໊ມ?
It is the controlled point when production and shipment change from an old drawing revision to a new revision.
Can old revision inventory be used after a drawing change?
Only if the buyer approves use-up and the quantity, date, label, and application limits are clearly documented.
What causes mixed-revision shipments?
Common causes include old stock, WIP, partial cartons, label errors, open PO confusion, unsegregated rework, and unclear effective dates.
What should buyers send for revision cut-in planning?
Send old and new drawings, affected features, open orders, inventory disposition, label requirements, sample approval needs, and receiving inspection rules.