How Long Does It Take to Make an Injection Mold in China? (2026 Timeline)

"How long does it take to make an injection mold?" is the first question almost every buyer asks — and the answer you get from a supplier often turns out to be optimistic. This guide gives a realistic injection mold lead time breakdown by mold complexity, explains what actually causes delays, and shows how to shorten the timeline when you are sourcing a mold from China for delivery to Russia or the CIS.

The Short Answer

For a typical single-cavity plastic or silicone mold of moderate complexity, plan on 25 to 40 days from design freeze to a validated sample part (T1). Simple molds can be finished in 15–20 days; complex, multi-cavity or high-precision molds take 45–70 days. Add shipping time on top: 5–12 days by air, 25–40 days by sea or rail to Russia.

The number that matters most is not the mold build alone — it is the total from "we agreed on the design" to "I hold an approved sample in my hand."

Stage-by-Stage Timeline

Stage	Typical Duration	What Happens
DFM & design review	2–5 days	Mold flow check, parting line, draft, gate and ejector plan
3D mold design	5–10 days	Full mold drawing, steel selection, cooling layout
Steel preparation & CNC	7–14 days	Rough and finish machining of core, cavity and inserts
EDM & wire cutting	4–8 days	Fine details, sharp corners, deep ribs
Polishing & assembly	3–6 days	Surface finish to spec, fit all components
Mold trial (T0/T1)	2–4 days	First shots, dimensional check, sample parts
Rework & final samples	3–7 days	Adjust steel, re-trial if needed, approve samples

These stages partly overlap in a well-managed shop. A supplier that runs design, steel ordering and rough machining in parallel can compress the total by 20–30% compared with a shop that works strictly step by step.

Lead Time by Mold Complexity

Mold Type	Typical Lead Time (design to T1)
Simple single-cavity, loose tolerance	15–20 days
Standard single-cavity, normal tolerance	25–35 days
Multi-cavity production mold	35–50 days
LSR silicone mold with cold deck	40–60 days
High-precision / tight tolerance (±0.05 mm)	45–70 days

Silicone and LSR molds sit toward the longer end because of heated platens, cold-deck systems and sealing requirements. If you are choosing between processes, our LSR vs compression molding guide explains the tooling differences.

What Actually Causes Delays

In practice, most late deliveries are not caused by the machining itself. The usual culprits are:

• Design changes after steel is cut. Every revision adds days and cost — sometimes a full re-cut of the cavity.
• Incomplete or ambiguous 3D files. Missing draft angles, undefined tolerances or non-manifold geometry force back-and-forth questions.
• Steel availability. Exotic steels (S136, H13 hardened) may need special ordering.
• Unrealistic tolerance demands. Chasing ±0.02 mm on a part that does not need it adds polishing and re-trial cycles.
• Slow sample approval. The clock keeps running while the buyer reviews the T1 sample.

How to Shorten the Timeline

Buyers who consistently get their molds on time do five things:

• Freeze the design before tooling starts. Treat the 3D file as final; move cosmetic or non-critical changes to a later revision.
• Send a clean, complete 3D model (STEP or IGES) plus a 2D drawing with tolerances and material.
• Approve the DFM report fast. A same-day response on the mold flow and parting-line review saves days.
• Specify tolerance by function, not by habit — tight only where it matters.
• Choose a supplier that works stages in parallel and gives you a written schedule with milestones.

Delivery to Russia and the CIS

Mold build time is only part of the total. From Xiamen, molds typically reach Moscow in 7–12 days by air or 25–40 days by sea/rail. Because a mold is a high-value, heavy item, most buyers ship the first mold by air to start production sooner and send repeat tooling by rail to save freight. Customs paperwork — commercial invoice, packing list and HS code — should be prepared before the mold is finished, not after, so the shipment is not held at the border.

Final Checklist

• ☐ Is your 3D model final and manifold-checked?
• ☐ Do you have a 2D drawing with tolerances and material spec?
• ☐ Have you received a written schedule with DFM, T0 and T1 dates?
• ☐ Are tolerances specified by function, not by default?
• ☐ Is your shipping method (air vs rail) and customs paperwork planned?
• ☐ Who approves the T1 sample, and how fast can they respond?

Get a Real Schedule, Not a Guess

At Precimold we design and build silicone and plastic injection molds and give every project a written milestone schedule — DFM, steel cut, T0, T1 — before work starts. Send us your 3D file and target date, and we will tell you honestly whether it is achievable and where the time goes. We reply within 12 hours.