Polyurethane Vacuum Casting

For successful vacuum casting, a prototype is first created by expert engineers using CNC machining or 3D printing techniques. After the prototype is finalized, a silicone mold is crafted based on this model. The casting material is then vacuum poured into this mold, and upon curing, it replicates the original prototype. This entire procedure is referred to as the vacuum complexity model.

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From CNC Prototyping to Production

With 13 years of industry expertise, Insight Prototype Technology Co., Ltd. leverages its extensive manufacturing experience to offer optimal solutions for all rapid prototyping and low-volume manufacturing requirements.

Superb technology takes a short time

We have a professional technical team and have won honorary titles such as "Industry Leader" and "Excellent Enterprise of the Year". With 13 years of manufacturing experience, it will be delivered to you with scientific production techniques and processes.

Professional team quality assurance

We have a professional R&D team, 5 major processing centers, 20+ high-tech talents, 40+ technical operators, and 40+ post-processing personnel. Ensure efficient and orderly completion of your order.

Have the most efficient workflow

We have the most efficient workflow, from drawing design analysis, material evaluation, machining, quality control and inspection, fast shipment of products. Reducing extra time per process minimizes lead times.

Polyurethane Vacuum Casting

The reproduction of moulds is of an incredibly high quality, with impressive detailing on the surface of the product. Little to no further treatment is needed, making it ideal for cost-effective production processes.

  • Quasi-ABS
  • PC-like
  • Polypropylene like
  • PMMA
  • Rubber


ABS is a widely used engineering plastic that combines the rigidity of resin with the elasticity of rubber. It not only has excellent mechanical properties of toughness, hardness and rigid phase balance, but is widely used in various fields such as machinery, electrical parts, office supplies and daily necessities.


Polycarbonate with high strength and elastic coefficient, high impact strength of the mechanical properties, suitable for automobiles, medical, aircraft, household appliances.

Polypropylene like

Polypropylene is one of the lightest resins commonly used and has excellent mechanical properties, including tensile strength, compressive strength and hardness. It is mainly used as parts of automobiles and electrical appliances, various containers, furniture, packaging materials and medical equipment


PMMA is the best transparent polymer material at present. In the case of ultraviolet light, PMMA has better stability than polycarbonate. PMMA has the advantages of light weight and easy molding, and is widely used in instrument parts, automotive lights, optical lenses, transparent pipes and so on.


Soft rubber materials such as polyurethane, TPU, TPE, rubber and so on. This type of material has been widely used in the field of furniture, construction, daily necessities, transportation, home appliances and so on.

Small Molded Parts within Days

Insight prototype makes it faster, easier, and more efficient to source the custom-manufactured parts you need, precisely when and how you need them.

Surface Finishing Options For Polyurethane Vacuum Casting

To enhance the strength, durability, aesthetics, and functionality of your 3D-printed prototypes or production parts, surface finishing is essential. Consider exploring our range of custom finishing options to find one that perfectly aligns with your project's needs.

  Name Description Material
Polish Grinding can make the surface of the product more smooth and bright, increase the quality of the product ABS, PC, PMMA, etc
Oil injection Spraying oil can make the surface of the product obtain decorative and protective effect, increase its endurance and color and sensory experience. The material is often used for ABS

Any RAL code or Pantone number

Surface Finishing Options For Polyurethane Vacuum Casting

Our extensive production capabilities, wide-ranging services, and stringent quality control measures provide swift, cost-efficient solutions that are geared towards enhancing your brand's value.

Expert Technical Support
Strict Standard
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Advanced Testing Facilities
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Complete Qualitg Report

What Our Customers Say

The testimonials from our customers carry more significance than our own assertions. Take a moment to read what our satisfied clients have to say about how we successfully met their needs.


This professional shop is run by two of the most reliable people I have met in the industry. Their quality of work, communication, work ethic, and overall performance warrant more than 5 stars. I was even able to sit down with them and work through my design to ensure manufacturability would not be an issue before making an order with them. I know that that was outside of the scope of work for them, but it goes to show how much they care about their clients. 10/10 would recommend.” -

Nathan L.

Mechanical Engineer


Insight prototype always gives us what we need. We received the holed parts in the correct position and finish on time. Their user-friendly website means faster turnaround

Jackson Siu

Mechanical Engineer


Insight prototype provides professionalism and ease of use. They fulfill the orders so I don't have to wrestle or manage with suppliers. We buy the quote and Yunsheng takes care of the rest.

Bruce Kyles


Gallery of Vacuum Casting Service Parts

Check out our extensive gallery that shows precision machined prototypes and parts from our valued customers.

About the CNC Milling Process

  1. Process Overview: In polyurethane vacuum casting, a master model, typically created using CNC machining or 3D printing, is used to form a silicone mold. This mold is then used to cast replicas in polyurethane.
  2. Material Properties: Polyurethane materials used in vacuum casting can mimic a wide range of thermoplastics, offering various levels of flexibility, hardness, and color. This makes it highly adaptable for different applications.
  3. High-Quality Finish: The process produces parts with excellent surface details and high-quality finishes, closely resembling injection-molded parts.
  4. Design Flexibility: It is ideal for complex geometries and intricate designs, allowing for undercuts and fine details that might be challenging with other manufacturing methods.
  5. Rapid Production: Vacuum casting is a fast method for producing small to medium quantities, making it perfect for rapid prototyping and short-run production.
  6. Cost-Effectiveness: It offers a cost-effective alternative to injection molding for low-volume production, especially when the high cost of mold creation for injection molding is prohibitive.
  7. Applications: Commonly used in automotive, medical, electronics, and consumer products industries, it is ideal for functional testing, market testing, and aesthetic prototypes.


What is Polyurethane Vacuum Casting?

What are the benefits of using this process?

How accurate is Polyurethane Vacuum Casting?

What materials can be used in Vacuum Casting?

How long does the process take?

Can it produce large parts?

Is it suitable for functional prototypes?

What industries commonly use this process?

How does it compare to injection molding?

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