A wax-residue claim is never only technical: the customer has parts in the field, your team has to decide what to admit, and the line must keep running. This is the 24-hour playbook, the roles, and the prevention system that makes it a one-time event.
< 4 h
First response
24 h
Containment
0
Repeat claim
First 24 hours
| Window | Action | Owner | Output |
|---|---|---|---|
| 0-2 h | Freeze the batch, pull the log | QC lead | Batch record + photos |
| 2-4 h | Acknowledge to customer with plan | Sales/owner | Written response |
| 4-12 h | Reproduce the defect on retained samples | Chemist | Root cause candidate list |
| 12-24 h | Containment decision (sort, rework or replace) | Production manager | Containment record |
| 24-48 h | Corrective action + gate change | Cross-functional | Updated work instruction |
Who does what in a claim
| Role | Owns | Talks to | Never does |
|---|---|---|---|
| QC lead | Facts and photos | Everybody | Guess the cause |
| Chemist | Bath and chemistry evidence | QC lead | Change the bath before sampling |
| Production manager | Containment and schedule | Customer service | Promise dates alone |
| Owner | Customer relationship and cost | Customer | Discuss blame internally in writing |
Prevention system after the claim closes
| Control | What changes | Audit frequency |
|---|---|---|
| Water-break gate | Recorded per load, initials required | Daily review |
| Bath trend | Temperature and alkalinity charted | Weekly |
| Compound change notice | Polishing must notify dewaxing | Per change |
| Retained samples | One rack kept per batch, 90 days | Monthly check |
Watch out
Do not rebuild the tank before sampling. The fastest way to lose a claim is to destroy the evidence in the first hour.
Common mistakes and the fix
| ✗ Promise replacement before root cause | ✓ Contain first, commit after the facts are in |
| ✗ Let each department investigate separately | ✓ One owner for facts; three versions of the truth lose customers |
| ✗ Close the claim without a gate change | ✓ A claim without a changed control repeats within a quarter |
| ✗ Discuss blame by email internally | ✓ Written blame always reaches the customer eventually |
What each role watches
| Operator | "Preserve the batch and the log; do not 'clean up' the tank." |
| Chemist | "Sample before any adjustment, and record the sample time." |
| QC | "Photograph everything, including the packaging and the label." |
| Manager | "Own the 24-hour clock and the customer response." |
From the shop floor
Case: a jewellery customer reported dull gold on 300 D-rings. The shop contained in 18 hours, sampled the degreaser before rebuilding it, and found the tank at 48 C. A temperature alarm and a recorded water-break gate turned the incident into a documented improvement the customer accepted.
FAQ
What must be preserved first?
The batch, the rack card, the dewaxing log and a bath sample. Everything else can wait.
Should we admit the cause before analysis?
Admit the impact and state the plan; confirm the cause when the evidence supports it.
How do we show the customer it will not repeat?
A changed, auditable control: a recorded water-break gate, a temperature alarm and retained samples.
Where to go next
- Level guide for this trade: Dewaxing & Ultrasonic Cleaning — technician levels
- Other levels: Junior, Intermediate, Senior
- Owner view: Process Overview for owners
- Supplier view: Chemistry & Supply · Find content by trade + level