- Home
- Rapid Technologies
- Vacuum Casting
Vacuum Casting
Why vacuum casting?

When your brief is for pre-launch testing, low volume manufacture of simple parts or concept models and prototypes, you want a reliable, cost-effective alternative to injection moulding.
Vacuum casting fits that bill. Tooling starts with a 3D printed master pattern, and the tool itself comprises silicone. Both of these phases are fast and economical. The resultant parts are high-quality, and their attributes are comparable to injection-moulded parts and can be formed with very tight tolerances. The process lends itself well to a variety of finishes, including colour options and texturing.
We want to help you to keep your prototyping costs down without compromising on quality. We have a dedicated vacuum casting facility with multiple machines and myriad rigid and flexible materials, including those with high temperature, V0 rated flame retardant, UV stability, glass-filled, and food-safe properties. It’s our mission to deliver on quick turnaround times, exceptional quality and outstanding levels of customer service.
- Vacuum casting enables reproduction of very fine detailing; finished parts can be painted and overmoulded
- Suitable for low production runs to 100s of parts - the low cost of tooling results in cost efficiencies above those of injection moulding
- Rapid turnaround of parts, especially when 3D printing is used to create pattern masters, saving on development time and reducing costs
- A wide variety of casting resins emulating the look, feel and performance of injection moulding and engineering materials
Materials (click for basic data sheet)

PRC 1810
Clear polyurethane with high UV stability, suitable for prototyping optical lenses. Can be coated and coloured.

PX 245
For technical parts and prototypes with similar mechanical properties to the thermoplastics polyoxymethylene or polyamide. Can be coloured.

VG 5285
A temperature resistant polypropylene simulant. Suitable for functional prototyping.

PT 8263
A rigid, superior strength white resin with excellent impact resistance. Can be coloured. Certified fire retardant: UL94 V-0.

PT Flex 50
A flexible 50 Shore A fast-curing rubber. Perfect for casting decorative objects, production parts, tools, models, patterns, duplicate masters and more. Can be pigmented or dyed.

PT Flex 60
A flexible 60 Shore A fast-curing rubber. More rigid than PT Flex 50, but excellent for casting decorative objects, production parts, tools, models, patterns, duplicate masters and more. Can be pigmented or dyed.

PT Flex 70
A firm 70 Shore A fast-curing rubber. Excellent for casting decorative objects, production parts, tools, models, patterns, duplicate masters and more. Can be pigmented or dyed.

PT Flex 85
A firm 85 Shore A fast-curing rubber. Excellent for casting decorative objects, production parts, tools, models, patterns, duplicate masters and more. Can be pigmented or dyed.

SG 95
A transparent ABS-like material with excellent all-round functionality and great optical properties. Suitable for snap fits, low temperature applications and colour matching.
Technology
Case studies

Blue-i Lighting
A robust, portable, high-intensity LED lighting product

Jaguar XF
Jaguar XF Automatic Gear Shifter, helping Kostal win the business

Telemedic Vitalink
Prototypes for the extensive field trials of the Telemedic Vitalink³ vital signs monitor