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Top Proto Custom Vacuum Casting

Top Proto also has good Vacuum casting services that they are able to provide high quality parts with good surface finish and good dimensions. Our solutions can be used in high-volume production, and low-volume production as well as in rapid prototyping.
 

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Accepted File Types: STEP, STP, SLDPRT, STL, DXF, X_T, X_B, IPT, CATPART, PRT, SAT, 3MF, JT

What is Vacuum Casting?

Vacuum casting is a production technique that produces plastic components of high quality. Vacuum Liquid resin is poured into silicone molds.
The procedure is optimal when precise prototypes are required and the volume of production parts is small and the surface detail and material performance are superior.

What's Vacuum Casting Process

01. Master Patterns

Top Proto develops a high precision master parts normally through 3D printing or CNC machining to establish the form and finish of the part.

The master pattern is put into a liquid silicone mold in order to create a flexible instance of the pattern. This enables high detail and accuracy of replication.

Urethane resin is cast under vacuum in order to remove air bubbles. The part is completed after drying and checked to produce constant production parts.

why Top Proto should be selected to handle Vacuum Casting?

Top Proto provides reliable services of vacuum casting. Our services include high quality of surfaces, a high degree of dimensional control, and rapid turnaround. Vacuum casting is a perfect choice in terms of functional prototypes and low-volume production due to the consistency of the results provided by our professional staff. We assist you in mold making up to finished components, provide flexible materials, high quality inspection, and low cost manufacturing depending on your project requirements.

Vacuum Casting Capabilities

FeatureDescription
General TolerancesMetals: ISO 2768-M Plastics: ISO 2768-C
Precision TolerancesAchieves tolerances as tight as ±0.001 in.
Minimum Wall Thickness0.5 MM allowing lightweight designs.
Minimum End Mill Size0.5 MM for fine detail machining.
Maximum Part SizeCNC Milling: 4000×750×660 MM CNC Turning: 200×500 MM
Minimum Part SizeCNC Milling: 5×5×5 MM CNC Turning: 2×2 MM
Production VolumePrototyping: 1–100 PCS Low volume: 101–10,000 PCS High volume: 10,001+ PCS

Industry Expertise at Top Proto

With millions of parts successfully produced, TOP PROTO Machining brings extensive expertise across a wide range of applications. We specialize in industries that demand precision and complex component manufacturing. No matter the challenge, you can rely on us for exceptional quality and proven experience.

Rapid Tooling

Rapid tooling let’s you go faster to go from an idea to functional parts. With our advanced CNC machining service, we create molds and tooling with precision needed to test designs, validate fit, and function and bring products to market faster. It’s perfect for prototypes, low volume runs, and early-stage development where outworking competitors is critical and precision matters most.

Production Tooling

For our production tooling, we prioritize long-term durability. With top grade materials and precision CNC machining, we make tooling that allows full-scale production without losing accuracy. If you need thousands of the same parts, and even with batch production, we deliver consistent, reliable tooling and stable production cycles.

Vacuum Casting Materials

Our vacuum casting services use polyurethane-based casting resins designed to replicate injection-molded plastic behavior. Material selection is based on mechanical properties, surface finish, and end-use simulation.
Aluminum

6061 / 7075

Aluminum

6061 / 7075

Aluminum

6061 / 7075

Aluminum

6061 / 7075

Aluminum

6061 / 7075

Stainless Steel

304 / 316L

Titanium

Grade 5 (Ti6Al4V)

Titanium

Grade 5 (Ti6Al4V)

As Machined
Visible tool marks with standard 3.2μm Ra finish.
Bead Blasting
Visible tool marks with standard 3.2μm Ra finish.
As Machined
Visible tool marks with standard 3.2μm Ra finish.
As Machined
Visible tool marks with standard 3.2μm Ra finish.
As Machined
Visible tool marks with standard 3.2μm Ra finish.
As Machined
Visible tool marks with standard 3.2μm Ra finish.
As Machined
Visible tool marks with standard 3.2μm Ra finish.
As Machined
Visible tool marks with standard 3.2μm Ra finish.

Vacuume Casting Surface Finishes

Achieve the exact functional and aesthetic requirements for your machined components with our industry-leading finish gallery.

Made in China, Precision You Can Rely On

Located in China, our facilities are equipped with cutting-edge technology to handle everything from rapid prototyping to full-scale production. With skilled technicians and meticulous quality control, we guarantee custom plastic and metal parts delivered with speed, precision, and no middlemen involved.

300+

Machines, All Running at Peak Efficiency

0.01 mm

Ultra-Fine Tolerances Starting at 0.01 mm

1 Day

Fast Lead Times Starting from 24 Hours

50+

Materials Available for Every Project

Pros of Vacuum casting

What Makes Top Proto Different from Others

Instant Smart Quoting
Get quick pricing and DFM insights to optimize designs and reduce costs.
Global Supply Network
Access our global manufacturing network for reliable solutions of all sizes.
Certified Quality Control
Strict inspection protocols for every part. We ensure 100% accuracy and high standards.
Fast Reliable Delivery
Punctual shipping for all custom orders. Your projects always stay on schedule.

Choose Us for Flexible Pricing and Quick Delivery

At TOP PROTO, we know price and timeline go hand in hand. Our CNC machining services can work around your budget and deliver on your deadline. Get a quote instantly and select the service to meet your requirements.

  • Competitive pricing with quality always remains.
  • Fast lead time to complete the project quickly.

How We Works – 3-Stages Workflow

We guarantee that CNC parts are delivered on time and that the process is completely transparent in the following 3 simple steps:

Upload Your Files

Instant prices with DFM feedback for many file types.

We Manufacture Your Parts

You can select from many materials and methods.

Tracking and Receiving Your Parts

View the QC documentation and inspection photographs.

Frequently asked questions

Vacuum casts are applied to functional prototypes and low volume plastic components that need high quality of surfaces and details.

The silicone mold usually gives 15-30 parts, which varies according to the shape of the parts and the choice of materials.

Top Proto is also providing PU resins such as ABS like, PC like, rubber-like like and transparent products to suit various applications.

Yes, vacuum casting is the best option when the quantity of parts to be made is low, when testing a product in the market, and when making a bridge prior to injection molding.

The majority of the vacuum casts take about 7-15 days to make the mold, cast and finish.