Custom Injection Mold Maker — Single Cavity to 64-Cavity Hot Runner Tooling
Custom injection mold maker — single to 64-cavity hot runner molds, 2–4 week lead time, mold flow analysis, in-house trial, IATF 16949, free 24h DFM.
- 1 to 64 Cavities
- 2–4 Week Delivery
- Mold Flow Analysis
- In-House Trial
- Steel Expertise
- 24h DFM Feedback
Fast Response within 2 HoursNDA ProtectedSTEP / IGES / X_T / DWG
Trusted Tier-1 & OEM Standards:
SERVICE SCOPE & CAPABILITIES
Injection Mold Making End-to-End Under One Roof
As a custom injection mold maker in China, we design, machine, assemble and trial every mold entirely in-house — from single-cavity prototype tooling to 64-cavity hot-runner production molds — so quality never depends on a subcontractor.
MOLD TYPES
Injection Molds Built In-House
- Single-Cavity to 64-Cavity Molds
- Hot Runner Systems (Manifolds, Nozzles & Controllers)
- Cold Runner & Three-Plate Molds
- Insert Molds for Overmolding & Metal Inserts
- Prototype & Bridge Molds for Fast Sampling
- Two-Shot & Multi-Material Molds
PROCESSES
Full In-House Machining
- 5-Axis CNC Milling & Turning (Makino / Mikron)
- Wire EDM & Mirror Sinker EDM (Sodick)
- Jig Grinding & Precision Surface Grinding
- Deep Hole Drilling & Conformal Cooling
- Mold Polishing & VDI Texturing
- Bench Assembly & Guide Fitting by Senior Toolmakers
MATERIALS
Certified Mold Steels & Heat Treatment
- NAK80, S136, 718H, P20 & DC53 Core and Cavity Steels
- SKD61 / H13 (ESR) for High-Heat & Hot Runner Applications
- Pre-Hardened 28–40 HRC to Vacuum Hardened 48–62 HRC
- SPI A-1 Mirror Polish to VDI 3400 Textured Cavities
- Gas Nitriding, DLC / TiAlN PVD Wear Coatings
- 100% Spectrometer Material Verification per Lot
LEAD TIME & DELIVERY
Fast-Track Mold Building & Sampling
- 2–4 Week Standard Lead Time from Approved Design
- Prototype Molds Fast-Tracked — T1 Samples in as Fast as 15 Days
- 24-Hour DFM Feedback & Firm Quotation
- In-House Trial on 50–500 T Injection Machines
- CMM Report & Approved Samples Shipped with Every Mold
- Air or Sea Freight with Export-Grade Packaging
ENGINEERING & TECHNICAL SUPPORT
Free DFM & Moldflow Analysis Before Steel Cutting
Mitigate tooling risk before you commit. Our engineers review gating, cooling, ejection and steel selection against your part geometry, resin and cycle target — free, with feedback within 24 hours.
What Our DFM Review Covers
Moldflow Simulation & Gate Optimization
Gate type, size and location verified against fill, weld lines, sink marks and shrinkage for your resin — before any steel is cut.
Draft Angle & Undercut Analysis
Draft angles (≥1.5° for textured surfaces) and undercut handling reviewed to prevent part sticking, ejection distortion or added side-action cost.
Cooling Channel & Cycle Time Design
Conformal and straight cooling layouts optimized to balance part temperature, cut cycle time and eliminate warpage on high-volume cavities.
Machining Interference & Tool Reach Check
Deep-cavity tool accessibility, 5-axis collision avoidance and EDM electrode feasibility verified before programming.
Seamless 6-Step Project Execution
Part Review & DFM
Drawing reviewed within 24 h — gate, cooling, ejection and steel recommendations.
Mold Design
3D design with mold flow analysis and full 2D detail drawings.
Machining
CNC, wire EDM, jig grinding and mirror EDM on our own machines.
Heat Treatment
Controlled hardening and surface treatment to drawing spec — up to HRC 62.
Assembly & Fitting
Bench fitting and guide alignment by senior toolmakers.
Trial & Report
In-house injection trial on 50–500 T machines, sample approval and CMM report.
Have a Part Drawing Ready for Evaluation?
Send us your 3D model. Our tooling engineers return a DFM report and quote within 24 hours.
.STEP | .IGES | .X_T | .DWG | .PDF (Max 100MB)
ENGINEERING SPECIFICATIONS & EQUIPMENT
Injection Mold Machining Capabilities & Tolerances
Manufacturing Limits & Accuracy Standards
| Specification Parameter | Automotive & EV Standard | High-Precision Custom |
|---|---|---|
| Machining Tolerance | ±0.005 mm (Standard) | ±0.002 mm (Critical Features) |
| Surface Roughness | Ra 0.4 µm (Standard) | Ra 0.05 µm (SPI A-1 Mirror EDM) |
| Max. Mold Dimensions | 1200 × 800 × 600 mm | Gantry Capacity for Large Multi-Cavity Molds |
| Mold Steel Hardness | HRC 48–56 (Vacuum Hardened) | Up to HRC 62 (SKD61 / H13 ESR) |
| Core & Cavity Steels | NAK80, S136, 718H, P20 | SKD61, H13 (ESR), Stavax, Custom |
| Quality Verification | 100% CMM Inspection | Full PPAP Level 3 Report + Material Certs |
Key In-House Processing Equipment
Makino & Mikron 5-Axis CNC
High-speed machining for deep cavities, thin walls and complex cores with ±0.005 mm positioning accuracy.
Sodick Wire EDM & Makino Mirror EDM
Sub-micron wire cutting (±0.0015 mm) and mirror-finish sinker EDM for sharp ribs and glossy cavity surfaces.
Mitsui Jig & Surface Grinders
Ultra-flat parting lines and guide-fit surfaces finished on precision jig grinders to sub-micron flatness.
ZEISS CMM & Optical Measuring
Temperature-controlled CMM lab with 100% critical-dimension reporting before mold trial and shipment.
Standard Injection Mold Build Flow
DFM & Moldflow
Gate, cooling & steel validation
Machining & EDM
CNC, wire EDM & heat treatment
Assembly & Fitting
Bench fitting by senior toolmakers
Trial & CMM Report
In-house trial & sample approval
MATERIAL SPECIFICATIONS & COMPLIANCE
Mold Steels, Surface Finishes & PPAP Compliance
Full material traceability and strict compliance standards for injection molds — from certified cavity steel to finished surface texture and PPAP-ready documentation.
Certified Mold Steels
Premium Mold Steels
Hardness Range
Polishing, Texturing & Coatings
Cavity Finishing
Hardening & Coating
PPAP-Ready Documentation
Deliverable Checklist
Need Certified Mold Steels or Custom Heat Treatment?
We attach full EN 10204 3.1 material certs and heat treatment logs to every mold delivery.
🔒 NDA Protected Files
QUALITY ASSURANCE & INSPECTION
Zero-Defect Mold Quality — From Steel to Trial Sample
Every injection mold is dimensionally verified on our CMM, hardness-checked after heat treatment and trialed on our own injection machines before shipment.
🔬 INSPECTION HARDWARESub-Micron Metrology Lab
- ZEISS CMM: temperature-controlled 3D dimensional mapping of cavities, cores and parting lines
- Nikon optical projector & height gauges: 0.001 mm resolution on critical features
- Vickers hardness & surface roughness gauges: HRC and Ra verification after heat treatment
🎯 IN-PROCESS CONTROL100% Inspection at Every Gate
- IQC: spectrometer verification of all mold steel lots before machining
- IPQC: first-piece checks after every major CNC/EDM setup change
- FQC: 100% critical dimension inspection before assembly and trial
📜 DOCUMENTATIONPPAP-Ready Mold Reports
- CMM dimensional reports matched to ballooned drawings
- Material certificates (EN 10204 3.1) and heat treatment logs
- T0–T2 trial reports with sample approval records
Download Sample Quality Control & Inspection Reports
Review our standard CMM inspection sheet, Material Composition Certificate, and RoHS report templates.
FREQUENTLY ASKED QUESTIONS
Injection Mold Maker — Ordering & Frequently Asked Questions
Common questions about mold lead times, steel selection, hot runner systems, trials and documentation.
Typical lead time is 2–4 weeks from approved design, depending on cavity count and complexity. Prototype molds can be fast-tracked — T1 samples in as fast as 15 days.
For most engineering plastics: S136 or NAK80 for polished cosmetic surfaces, SKD61 for high-heat applications, 718H for large cores, P20 for prototype tooling. We confirm the final grade at DFM review.
Yes — complete hot runner systems with manifolds, nozzles and temperature controllers, designed with mold flow analysis for your resin. We also build cold runner and three-plate molds.
Yes. Every injection mold is trialed on our in-house injection machines (50–500 T). Samples are approved against your drawing before shipment, with a CMM report included.
CMM dimensional reports, material certificates (EN 10204 3.1), heat treatment logs and T0–T2 trial reports. Full PPAP Level 1–3 documentation available for automotive programs under our IATF 16949 system.
Yes — from prototype molds and bridge tooling to full 64-cavity production molds, with sampling on our machines before mass production.
Ready to Start Your Injection Mold Project?
Send us your part drawing today. Our tooling engineers return a free DFM review and detailed quote within 24 hours.
🔒 100% Confidential | NDA Protected | Instant DFM Assessment
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