Quick Answer
Tell your plating supplier when a change is being proposed, before revised parts enter regular production or ship for plating. For an established barrel nickel or ReplaChrome® program, that includes changes to drawings, specifications, base metal, tooling, manufacturing methods, oils, and lubricants. An unchanged part number or plating callout does not necessarily mean the incoming part is unchanged.
Early notice gives the manufacturer, plating supplier, and customer time to identify affected requirements, agree on any trials or approvals, and define which production lot will introduce the change. Do not treat a shipping date as authorization to implement it.
Which Changes Need a Plating Review?
Start with two categories: changes to what the customer requires and changes to how the unplated part is made. A drawing revision may alter a dimension, appearance zone, finish designation, or test requirement. An upstream process change may leave the drawing untouched while changing the surface presented to the plating line.
Master Finish’s FAQs specifically identify changes in metal suppliers, processing methods, oils, and lubricants as potential sources of plating problems. Include these changes in the conversation rather than waiting for a visible finish defect.
For example, replacing a stamping lubricant should trigger a discussion about the new residue and cleaning compatibility. Replacing or modifying a tool should prompt a comparison of the actual parts, including any changed burrs, edges, or surface condition. These are review questions, not a claim that every change requires a new plating process.
Master Finish offers barrel nickel plating for small steel and brass components, with ReplaChrome available as a subsequent nickel-alloy topcoat on its barrel line. For an existing program, review the complete approved finish system rather than only the final appearance.
What Should an Engineering Change Packet Include?
Send a concise before-and-after package that lets the plating team identify what is different without reconstructing the program history. A useful packet includes:
- Part and program identification: part number, current revision, proposed revision, affected manufacturing location, and engineering contact.
- Controlled requirements: current and proposed drawings, highlighted changes, the plating specification and revision, and any revised customer requirements. Include referenced documents, not just their titles.
- The manufacturing change: old and new material designations, supplier information where relevant, tooling or processing changes, and lubricant or cleaner product information. Explain what remains unchanged as well.
- Representative evidence: clearly identified old and new unplated samples, photographs, material documentation, and available trial results. Agree on sample quantities before sending them.
- Timing and disposition: proposed implementation date, first affected lot, remaining old-condition inventory, and the person responsible for customer approval.
Master Finish’s published June 2026 CQI-11 assessment identifies customers as responsible for supplying updated OEM specifications. A revised purchase order alone may not communicate every technical change.
Who Decides What Must Be Requalified?
The applicable customer requirements and approved change-control process govern the release decision. The manufacturer and plating supplier should assess the change together, then confirm the necessary evidence with the responsible customer authority. Supplier acknowledgment is not the same as customer approval.
Keep qualification focused on the change and its credible effects. A different lubricant may call for cleaning and adhesion evaluation. A modified part may need a fresh review of barrel processing and the affected coating characteristics. A revised finish requirement may require appearance or performance testing against the new specification.
Document the selected tests, acceptance criteria, sample identification, responsible reviewers, and release conditions before the trial. AIAG’s APQP guidance includes change management and part traceability, reinforcing the value of a controlled transition. Whether a PPAP submission, resubmission, or another approval route applies depends on the program’s requirements. There is no universal PPAP requirement for every plating change.
How Should Old and New Conditions Be Kept Separate?
Define a traceable changeover point using a lot identifier, production date, or other agreed control. Keep old-condition stock, trial parts, and approved new-condition production separately identified. Where the drawing revision stays the same, use a supplemental identifier that distinguishes the process change.
Align container labels, shipping paperwork, purchase orders, and the supplier’s receiving instructions. State whether each shipment is for evaluation or released production. Do not combine old and new conditions merely because they share a part number.
If changed parts have already shipped, notify the plating supplier promptly with affected lot numbers and quantities. Establish their processing status and agree on disposition before assuming that subsequent shipments can proceed.
Frequently Asked Questions
Should we notify the plater if the drawing has not changed?
Yes. Material sources, tooling, manufacturing methods, and lubricants can change independently of a drawing revision. Describe the actual change.
How much advance notice is required?
Follow contractual notification requirements and agree on timing before implementation. Allow for document review, representative trials, testing, and any customer approvals rather than assuming a standard number of days.
Does a successful trial authorize full production?
Not automatically. Confirm that the required reviewers have accepted the evidence and that the applicable release conditions are satisfied. Keep trial results tied to the tested material and process condition.
Discuss the Change Before the Next Production Lot
Planning a change to an ongoing barrel nickel or ReplaChrome program? Contact Master Finish with the proposed change, updated requirements, affected lots, and target timing. An early technical discussion can help establish what needs review before revised parts arrive for plating.
Sources
Master Finish Frequently Asked Questions
Master Finish Barrel Nickel Plating Services
Master Finish CQI-11 Plating System Assessment, June 3, 2026