Case Study: Custom Cotton Thread for a Footwear Factory in Portugal
Source:Personalized Party Invitations /
Time:2026-09-18
Cotton Thread for a Footwear Factory in Portugal
A Footwear Factory approached us with a cotton thread requirement for the Portugal market. The brief was specific: a defined look, a hard launch date and a unit cost that had to survive freight and duty. This case study records what was specified, what went wrong in sampling and how the bulk order was delivered.
The challenge
- Shrinkage that only showed up after the first wash
- Lead time quoted without the plating or dyeing sub-process
- A spec that lived in an email instead of a tech pack
What we specified
| Item | Cotton Thread |
|---|---|
| Client type | A Footwear Factory |
| Market | Portugal |
| Order volume | 10,000 pieces across 4 specifications |
| Base material | Glass |
| Standard size | 25 mm Width |
| Finish | Piece-Dyed Finish |
| Sampling rounds | 3 |
| Delivery window | 4 weeks from PO to ex-factory |
| Compliance | EN 71-3 |
How it was resolved
- We rebuilt the specification around Glass and locked the tolerance before bulk.
- The finish was moved to Sandblasted Finish after strike-off tests showed better durability.
- A pre-production sample was approved and retained as the golden reference.
- Production ran with in-line inspection and a mid-run photo report.
- Cartons were packed to the client's own barcode and ratio specification.
Result
- 10,000 pieces delivered inside the 4-week window.
- Unit cost held within 4.5% of the original quotation.
- Inspection-related rejection stayed under 1.0%.
- The specification is now on file, so reorders reproduce the approved sample.
What we would repeat
Fix the specification count early. Adding variants after production starts is the most expensive change a client can request.
Planning something similar?
If you are comparing suppliers, send us the spec they quoted against. We will quote the same spec and show you where the difference sits.
