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Vacuum casting | Rapid prototyping of plastic parts | Jucheng Precision
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Vacuum casting—an advanced rapid prototyping and small-batch production technology—uses high-precision silicone molds to deliver fast, cost-effective plastic parts. At Jucheng Precision, we specialize in this efficient process, offering a budget-friendly alternative to traditional injection molding for low-volume manufacturing. Experience superior quality, shorter lead times, and unmatched flexibility for your custom plastic components.
 
Vacuum Casting Service
What is Vacuum casting？
Polyurethane vacuum casting, also called vacuum casting, is a cost-effective substitute for small-batch plastic injection molding, enabling close replication of the final molded part or finished product. Typically, molds are made of silicone rubber, and CNC or SLA parts serve as master molds. Utilizing a vacuum casting machine ensures precision and consistency throughout the process, making it an ideal choice for high-quality prototyping and production.

 The molds are capable of replicating all structural and surface features of the product with high precision, showcasing one of the key vacuum casting advantages. Over-molding can also be employed to replicate additional product designs. Furthermore, a group of silicone molds can reliably replicate 10–15 product sets, ensuring cost-efficiency and flexibility for small-batch production.
How Does Vacuum Casting Work?

Master Pattern Making

According to your 3D drawings, we will make a master part by CNC machining and 3D Printing (SLS/SLA). We will also consider making the master by SLA for those parts with more complex shapes and structures.

Silicone Mold Making

Silicone is poured around the master, and a vacuum is used to remove all air. This is then cured in an oven at a temperature of 40 °C. It generally takes 8–16 hours, depending on the volume of the mold.

Vacuum Casting

The resin is poured into the mold inside the vacuum chamber under computer control and cured again in the oven. Average cure time: 1-3 hours for small parts and 3-6 hours for big parts. Remove the casting part from the silicone mold after curing. Prepare to repeat this cycle.
Vacuum casting process selection
In addition to the basic injection molding services, we also offer two different processes - vacuum casting, coated vacuum casting and insert vacuum casting.
Vacuum Casting
The mold is made of silicone rubber and uses CNC or SLA parts as a master pattern.
Post Forming
​​​​​​​Use a soft adhesive material to cover other materials.
Insert Forming
After the mold is loaded into the insert, resin is injected to fuse with the insert.
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Selection Of 12 Hei-Cast And Axson Materials For Vacuum Vasting
Hei-Cast 8150
Hei-Cast 8015
Axson PX527
Hei-Cast 8263
Hei-Cast 8752
Axson PX223 
Hei-Cast 8400
Hei-Cast 8743
Axson UP6160
Hei-Cast T0387
Axson PX5212
Axson UP5690
Hei-Cast 8570
Axson PX5210
Axson 4280
Complete The Delivery of Parts Project Presentation
* The parts pictures we display have been authorized by the customer and are subject to the customer confidentiality agreement.
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Technical Guide for Vacuum Casting

Standard accuracy

Standard tolerance is ±0.15mm/100mm, with the highest precision being able to reach ±0.05 mm.

Maximum part dimensions

The vacuum equipment can hold 1.8M*1.2M*1.0M mold specifications.

Minimum wall thickness

The vacuum equipment can hold 1.8M*1.2M*1.0M mold specifications.

Standard lead time

Up to 50 copies can be produced in 7 to 10 days, depending on the part specification and volumes.
 

Lifetime of the silicone mold

Up to 20 copies per mold, while if the part requires high quality, such as clear or complex structures, one mold can only make 12 or even 10 casting parts.

Surface finish and other functions

Colored, textured, painted, coated, clear polished, inserted, and Overmolding.
 
Advantages of Vaccum Casting | Jucheng Precision
Advantages of Vaccum Casting
Cost-effective way to produce small to medium-sized quantities of plastic parts
A wide variety of materials, including polyurethane, epoxy, and silicone
Preferred choice for functional prototypes and finished products
Low tooling costs
Quick turnaround time
Vacuum Casting Applications | Jucheng Precision
Vacuum Casting Applications
Vacuum Casting is useful for producing small to medium-sized quantities of high-quality, low-cost, and accurate plastic parts.

Automotive industry

Dashboard components, door handles, and interior trim parts.

Other Industry

Exterior parts and structural part

Medical industry

Custom Machined Plastic Housings, Handheld Devices, Medical Cosmetelogy, Dental Instruments and Surgical Robots
Is your product suitable for vacuum casting processing?
Contact us to provide you with a solution.
Why Choose Jucheng Precision with Vacuum Casting?
We provide a variety of manufacturing solutions, from sample customization to small batch production. 
 
We have passed the ISO 9001:2015, ISO 14001, ISO 13485, and IATF 16949 international quality management system certification.
At our vacuum casting factory, each vacuum casting mold can produce 15 to 18 castings with precision and efficiency. Depending on the project's production specifications and standards, the entire process can be completed within 7 to 10 days, ensuring high-quality results for small-batch production needs.
With our strong production capacity and advanced equipment, including 10 state-of-the-art vacuum casting machines, our China-based vacuum casting facility can flexibly adjust production cycles to meet your diverse manufacturing needs. We ensure high efficiency, precision, and consistent quality for all your small-batch production requirements.
Why Choose Jucheng Precision with Vacuum Casting | Jucheng Precision
Our other manufacturing capabilities
CNC Machining
⦁ 3-5axis CNC Milling
⦁ Turning and various post-finishes
⦁ Tolerance down to ±0.01mm
⦁ Global Delivery within days
Learn More
Sheet Metal Fabrication
⦁ Laser cutting, bending, stamping, punching, drilling, and pinning to assembly services
Learn More
3D Printing
⦁ SLS
⦁ SLA
⦁ DFM
⦁ DSML
Learn More
Rapid Tooling (Injection Molding)
⦁ Reaction Injection Molding suits low-volume manufacturing
Learn More
Jucheng Precision Factory
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Factory addredd: 3rd Floor, Building C, 4th Industrial Zone, Xisha Road
Shajing Street Baoan District, Shenzhen
 
Sales Office: unit 1, Enterprise City,Durham
DL16 6JF, united Kingdom
 
 
+86 - 188 - 7042 - 1176
+86 - 186 - 8005 - 3076

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CNC Machining
Jucheng Precision ISO 9001, ISO 14001, ISO 13485, IATF 16949

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