Case Study: Custom Metal Zipper for an Independent Boutique in Canada
Source:Natural Crystal Pendants /
Time:2026-09-18
Metal Zipper for an Independent Boutique in Canada
An Independent Boutique approached us with a metal zipper requirement for the Canada 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
- A trim that passed sampling but failed in-line because it was never cycle tested
- A spec that lived in an email instead of a tech pack
- An interlining that bubbled after the first press
What we specified
| Item | Metal Zipper |
|---|---|
| Client type | An Independent Boutique |
| Market | Canada |
| Order volume | 50,000 pieces across 3 specifications |
| Base material | Glass |
| Standard size | 12 mm Width |
| Finish | UV Printing |
| Sampling rounds | 2 |
| Delivery window | 5 weeks from PO to ex-factory |
| Compliance | JIS L Standards |
How it was resolved
- We rebuilt the specification around Glass and locked the tolerance before bulk.
- The finish was moved to Nickel-Free Electroplating 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
- 50,000 pieces delivered inside the 5-week window.
- Unit cost held within 2.0% 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
Approve a pre-production sample made from the actual bulk base material. Substitute material behaves differently in finishing.
Planning something similar?
Share the programme details and we will propose two alternatives — one optimised for unit cost, one for lead time — and let you choose.
