Every new client asks the same question: how long will this take? Every factory gives the same answer: 12–16 weeks.
Both numbers are wrong.
The real timeline is 18–22 weeks — not because factories are dishonest, but because the number they quote is the production timeline. It doesn't include the design-lock delays, the mold adjustment rounds, the material procurement gaps, or the buffer nobody plans for until something goes wrong.
This is the timeline I wish someone had handed me 15 years ago.
One Thing I Learned This Month
A client called me in a panic last month. They'd promised their retail buyer delivery in 12 weeks. We were at week 10 and just finishing mold adjustments. The math didn't work.
I asked when they'd started the clock. Their answer: "when we paid the deposit."
That's the wrong clock.
The clock starts when the design is locked. Not when the deposit clears. Not when the PO is signed. When every dimension, every material spec, every color code is final and won't change.
They'd started the clock three weeks before the design was actually locked. Three weeks of "let me just tweak the handle design" and "can we try a different shade of gray" burned through the buffer that was supposed to absorb mold adjustments and material delays. By the time they saw the problem, the only fix was air freight on 500 units at a cost of $8,400.
That's what a three-week clock error costs.
The Full OEM Timeline, Week by Week
| Week | Phase | Who | What Happens |
| 1–2 | Design Lock | Buyer + Factory | Finalize technical drawings with all 12 spec fields. Confirm material grades, color codes, component specs. This is where 80% of later problems are either prevented or baked in. |
| 2–3 | Mold Design | Factory | CAD modeling of injection molds. Mold flow simulation. Gate location analysis. Confirm draft angles — insufficient draft means shells stick in the mold, adding 3–5 seconds per cycle and driving unit cost up. |
| 3–5 | Mold Fabrication | Mold Workshop | CNC machining, EDM, polishing. 3–5 weeks is standard for a 3-piece luggage mold set (shell + back + frame). Expedited is 2–3 weeks at +30–50% cost — and rushed molds have rougher surface finish. |
| 5–6 | T1 Sample | Factory | First test shot from new molds. Expect surface defects. This sample checks structural dimensions, not aesthetics. 90% of T1 samples need at least one mold adjustment. |
| 6–7 | Mold Adjustment #1 | Mold Workshop | Gate relocation, cooling channel optimization, surface polishing. Based on T1 feedback. Each adjustment is 3–5 days — and the number of adjustment rounds is the #1 driver of timeline variance. |
| 7–8 | T2/T3 Samples | Factory | Second and third test shots. Should approach production quality by T2. By T3, indistinguishable from production intent. This is when you approve the gold sample. |
| 8–9 | Material Procurement | Procurement | Order PC granulate, hardware, zippers, lining, locks, packaging. Lead times: PC 2–3 weeks, custom hardware 3–4 weeks, standard hardware 1–2 weeks. Delays here cascade through everything downstream. |
| 9–10 | Pre-Production Sample | Factory | One complete unit built with production materials, production molds, production assembly process. The dress rehearsal — if anything is wrong here, it will be wrong on every unit. |
| 10–11 | Production Ramp-Up | Factory | First 50–100 units off the line, full QC applied. Assembly line issues surface here: workers need 200–300 units to reach target speed and quality consistency. |
| 11–13 | Mass Production | Factory | Full production run. 3 QC checkpoints: in-process (every 2 hours), end-of-line (100% visual), pre-packing (AQL sampling). Production speed: 80–120 units/day per line for carry-on. |
| 13–14 | Final Inspection | QA + Buyer | AQL sampling per the agreed standard. Third-party inspector if specified. Loading supervision. Every rejected unit is either repaired (2–3 days delay) or replaced (5–7 days if material is available). |
| 14–16 | Logistics | Forwarder | Inland trucking to port (2–3 days), customs clearance (1–3 days), vessel loading, transit (18–30 days depending on route). Documentation: B/L, commercial invoice, packing list, CO, Form A, test reports. |
| 16–18 | Delivery | Buyer | Container arrival, destination customs clearance, inland delivery to warehouse. Unload, count, spot-check. Damage claims must be filed within 3 days of delivery with photo evidence. |
| 18–22 | Buffer | Everyone | The time nobody puts on the schedule but always needs. Mold adjustment #2. Material delivery delay. Customs hold. CNY shutdown. Add 20–30% buffer to your planned timeline. |
Where Delays Actually Come From
After 15 years of watching timelines slip, I can tell you 80% of delays come from the same four places.
1. Design changes after mold start (weeks 3–5)
The single most expensive delay. Once CNC machining has started on a mold, changing a dimension means modifying the steel — limited and risky — or starting a new cavity insert, which adds 1–2 weeks and $500–1,500. The prevention is brutal and simple: lock the design before mold fabrication begins. No exceptions. If you think you might change something, delay the mold start. The cost of waiting two weeks is trivial next to the cost of modifying a mold mid-fabrication.
2. Mold adjustment rounds (weeks 6–8)
The first test shot always has issues — surface finish, dimensional accuracy, cooling consistency. The question is how many rounds it takes. Average is 2–3 rounds, each 3–5 days. An experienced toolmaker with your product type might do it in one. A toolmaker who's never built this kind of mold — budget for three. And here's why the "show me your mold workshop" question matters: a factory with in-house mold making turns adjustments around in 1–2 days. A factory outsourcing to a third-party mold shop takes 5–7 days per round. That difference alone can cost you 2–3 weeks.
3. Material procurement gaps (weeks 8–9)
Custom-colored PC granulate carries a 2–3 week lead time from the material supplier. Custom hardware — logo-embossed zipper pulls, branded TSA lock faceplates — runs 3–4 weeks. If the factory doesn't order these the moment the gold sample is approved, production start slides. Ask for procurement confirmation within 48 hours of gold sample approval: "Please confirm by email that the PC, hardware, and zipper orders have been placed with your suppliers, with expected delivery dates." One sentence. It forces accountability.
4. The ghost delay
Week 10, you ask for a progress update. "Everything is on track." Week 12, same answer. Week 13: "Small delay, everything will be fine." Week 14: silence. The ghost delay is almost always a real problem the factory is afraid to tell you about — a broken machine, wrong material shipped, a key worker quit. They're hoping to fix it before you notice. Your defense: weekly progress reports with photos, not text. Photos of your shells coming off the mold, wheels being assembled, finished units being packed. If the factory can't produce these on demand, assume the worst and escalate.
The Buffer Rule
I have one rule for timelines I've never regretted: always add 30% to the factory's quoted timeline for your internal planning. Factory says 12 weeks? Plan for 16. Factory says 16? Plan for 21.
If the buffer isn't needed, you deliver early and look like a hero. If it is needed — and it usually is — you deliver on time while everyone else explains delays to angry customers.
And remember which failure is cheaper. Early arrival costs a few weeks of storage fees. Late arrival costs lost sales, damaged retailer relationships, and the slow death of your brand's reliability reputation. Those two costs are not in the same universe.
Reader Question
"Is it faster to work with a factory that already produces a similar product to what I want?"
Yes. Significantly.
If a factory is already producing a 20-inch PC carry-on with double-injection wheels and an aluminum handle, and that's what you want with your brand and a few tweaks, your timeline drops from 18–22 weeks to 8–12 weeks. The mold already exists — no 3–5 week fabrication. The material supply chain is active — no 2–3 week procurement delay. The line is calibrated — no 200–300 unit ramp-up. QC standards are established for this product type.
The trade-off is less customization: you're adapting to their existing platform rather than building from scratch. For a first product, that trade-off is almost always worth it. Speed to market and lower risk beat total design freedom.
One pro tip: when you ask a factory what they're currently producing, you're not just vetting capability — you're hunting for platform products you can adapt. "What's your most popular current SKU?" is one of the most valuable sourcing questions you can ask.
About the Author
Written by the CLK Manufacturing Team — 16+ years of custom luggage OEM/ODM experience from our factory in Ji'an, Jiangxi, China. Updated: 2026-08-15.
Related Products & Sourcing
CLK Luggage (Jiangxi Chengleke Leather Co., Ltd.) manufactures custom hard-shell luggage, aluminum-magnesium cases and luggage sets for brands, retailers and corporate clients. Relevant resources:
- Browse our luggage sets and custom OEM/ODM luggage manufacturing
- Why choose CLK — factory profile, quality control and certifications
- Get a quote: contact our team or email clkbusiness@clkluggage.com