Prototyping Methods in China

Rapid prototyping is essential for product development, and Chinese service providers offer a broad range of prototyping methods at competitive prices. Understanding the options helps you choose the right approach for each development stage.

Prototyping Methods Available

3D Printing / Additive Manufacturing

FDM (FDM): functional prototypes in PLA, ABS, PETG. Low cost. SLA: high quality surface finish, good for visual prototypes. SLS: functional nylon parts, good mechanical properties. Metal printing: available in major cities, for functional testing. Chinese 3D printing prototyping costs 30-50% less than US/European services.

CNC Prototyping

CNC machining from solid material produces prototypes that best represent injection molded parts (same material). Widely available. 5-axis CNC for complex geometries. Surface finish can match production quality. Best bridge to production tooling.

Silicone Mold / Vacuum Casting

Polyurethane casting in silicone molds. Best for 5-50 copies of complex parts. Material properties close to production (simulated PP, ABS, PC). Fast turnaround (5-10 days). Excellent for functional testing and pre-production samples.

Bridge Tooling (Soft Tooling)

Low-cost mold (aluminum or soft steel) for 1,000-10,000 parts. Much lower cost than production tooling. Same material as production. Ideal for market testing. Lead time: 2-5 weeks.

Buyer's Tip: Chinese prototyping is fast and cost-effective, but communication is critical. (1) Provide 3D files in STEP or STP format, not IGES. (2) Specify surface finish requirements. (3) Request photos before shipping. (4) Use DHL/FedEx/UPS for shipping (3-5 days). (5) Budget for 2-3 iterations minimum. The fastest path: CNC prototyping from SLDPRT/STP files in 3-5 days for simple parts.

What This Means for Your Project: Choose your prototyping method based on development stage: (1) Concept: 3D printing for form/feel. (2) Engineering validation: CNC machining from production material. (3) Functional testing: silicone mold for production-like material properties. (4) Market testing: bridge tooling for actual production parts. Budget: US$200-1,000 for 3D printing, US$500-3,000 for CNC, US$1,500-5,000 for silicone mold, US$3,000-15,000 for bridge tooling.

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