Engineering-grade rapid prototyping

Accelerate Innovation.
Rapid Industrial Prototyping.

Transforming digital concepts into functional reality. Your agile engineering partner for high-fidelity CNC, additive manufacturing, and rapid tooling.

On the shop floor now
Rapid tooling lead time from 7 days
DFM feedback Within 24 hours
CNC tolerance ±0.005 mm
SLA accuracy ±0.1 mm
Batch size 1–10,000+ parts

Advanced Manufacturing Matrix

Engineering robust industrial components with uncompromising precision. Explore our core production capabilities.

CNC Prototyping

CNC Prototyping

High-precision metal & plastic machined models →

Rapid Casting

Rapid Casting

Quick-turn sand, investment & die casting parts →

3D Printing & Polymers

3D Printing & Polymers

SLA, SLS, Vacuum Casting & LSR →

Surface Finishing

Surface Finishing

Anodizing, painting, coating & hand polishing →

Transparent Digital Workflow

Experience total visibility with our transparent quoting, rigorous quality tracking, and dedicated project management from day one.

Workflow Monitor System Logs 3
TOP
CAD analysis
Volume: 450 cm³

DFM & Configuration

Optimized
Material Ductile Iron
Casting Process Sand Casting
Surface Finish Epoxy Coating
Quality inspection
±0.05mm

Quality Control Report

In Progress
  • Dimensional CMM Test
  • Chemical Composition
  • Hydrostatic Pressure Test
  • Final Visual Inspection
Logistics tracking
"Production is complete. Arranging port delivery today."

Dedicated Tracking Engineer

Available 24/7 for updates
Production
Packaging
Port Transit
4-Step Process
2
Quality & Transparency
3
24h Communication

Integrated Global Supply

Uncompromising Quality & Direct Value

We eliminate the middlemen. By integrating our deep foundry roots in Cangzhou with a seamless international trade framework, we deliver superior components directly to your assembly line.

  • 100% CMM Dimensional Transparency
  • Factory-Direct Pricing Model
  • Full Material Certification
Manufacturing hub
CMM inspection
Quality Verified

Initiate Your Custom Project

Skip the generic sales pitch. Connect directly with our technical engineering team for a 1-on-1 DFM review and accurate production quoting.

Response time Under 24 hours
Direct email engineering@purnis.com
Upload CAD Files →
Engineering support

Agile Manufacturing for Every Stage

We eliminate the friction of traditional manufacturing. Whether you are a hardware startup testing the market or an engineering studio needing reliable low-volume parts, we are scaled to support you.

Hardware Startups

Turn your CAD designs into reality without the corporate red tape. We provide accessible DFM feedback to help you launch faster and smarter.

DFM Guidance Fast Iteration

Low-Volume Runs

Skip the massive factory minimums. Get production-grade custom parts in small batches to test your market without heavy inventory risks.

No Strict MOQs Cost-Effective

Engineering Studios

Act as your extended workshop. We handle the complex fabrication so your boutique design team can focus entirely on innovation and testing.

NDA Protected High Precision

Specialized Machinery

Reliable custom components for mid-sized equipment builders. Consistent casting and machining quality for your assembly lines without the overhead.

Consistent Quality Assembly Ready
Engineering playbook

Real Client Feedback & Solutions

Browse how our engineers tackle specific prototyping challenges brought by global R&D teams.

JD
John D.
MedTech R&D Lead

"My SLA prototypes look great, but the snap-fits shear off immediately during assembly..."

SM
Sarah M.
Fluidics Engineer

"SLA support removal leaves terrible scars inside our fluid manifolds, causing turbulence..."

RK
Robert K.
Hardware Director

"3D printing is too slow for 200 parts, but a steel mold is $10k and takes 4 weeks..."

+ New cases updated monthly
Case study #01 Verified R&D inquiry
JD
John D. says:

"My SLA prototypes look great, but the snap-fits shear off immediately during assembly tests. We can't validate the functional design."

Our engineering response

Shift to Moisture-Conditioned SLS Nylon

Standard resin is too brittle for cyclic fatigue. We reroute functional snap-fit components to our SLS (PA12) line. For extreme longevity, we now apply a specialized moisture-conditioning post-process that increases flexural toughness by 30%, perfectly mimicking injection-molded POM/ABS.

  • SLS PA12
  • Vacuum Casting (ABS-Like)