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Vacuum Casting Services

Production-Like Plastic Parts Without Hard Tooling

Custom vacuum casting services for appearance prototypes, functional testing, low-volume production, and pre-market product validation. TOP Prototype uses silicone molds and casting resins to reproduce detailed plastic parts with consistent color, texture, and assembly features. Vacuum casting allows multiple similar parts to be reproduced from one master pattern, making it a practical option when CNC machining or individual 3D printing becomes too expensive for repeated prototypes.

Key Capabilities

Silicone Mold Making
Rigid Plastic-Like Casting
Clear and Flexible Part Casting
Color and Texture Matching
Finishing and Assembly

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Explore Our Capabilities

Core Vacuum Casting Capabilities

Our vacuum casting capabilities support detailed prototypes and low-volume plastic parts without the cost and lead time of hard production tooling.

Silicone Mold Making

Flexible silicone molds reproduce surface details, textures, undercuts, and complex product geometry from an approved master model.

Rigid Resin Casting

Production-like rigid parts for housings, covers, brackets, internal components, and functional assembly testing.

Vacuum-Cast Parts for Product Development

Our vacuum casting capabilities extend beyond the examples below. Share your design to receive feedback on master patterns, mold structure, material simulation, color, quantity, and finishing requirements.

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Transparent Fluid & Optical Components

Molded from transparent PC and clear engineering plastics. Consists of transparent impellers, liquid storage housings, lamp covers and transparent junction boxes. Offers high light transmittance, smooth flow surfaces and good sealing performance. Widely used in fans, fluid equipment, lighting and electronic assemblies.

Equipment & Handheld Enclosures

Made of ABS, PC/ABS and nylon materials. Includes handheld housings, charging bases, electrical ventilation boxes and device bottom shells. Reserved spaces for interfaces and heat dissipation. Optional surface finishing for portable instruments and electronic control modules.

Fluid Housings & Load-Bearing Structural Parts

Manufactured with high-temperature reinforced plastics and glass fiber reinforced materials. Covers pump housings, air intake elbows, carrying handles and triangular mounting brackets. Optimized rib structure ensures pressure resistance and mechanical strength for industrial machinery.

Materials Engineered for Vacuum Casting

Rigid General-Purpose Resins

Tough and Wear-Resistant Resins

Flexible Plastic-Like Resins

Clear and Optical Resins

Rubber-Like Materials

ABS

Used for housings, covers, consumer products, appliance components, and general-purpose functional prototypes.

Balanced strength and impact resistance
Good painted and cosmetic surface quality
Suitable for assembly and handling tests

PS-Like Polyurethane

Used for display components, lightweight covers, packaging prototypes, and appearance-focused parts.

Good dimensional consistency
Smooth cosmetic surface
Suitable for rigid, lightweight components

PC-Like Polyurethane

Used for protective housings, equipment covers, lighting components, and impact-resistant prototypes.

Higher toughness than standard rigid resin
Good heat and impact performance
Available in clear or tinted options

ABS
PS-Like Polyurethane
PC-Like Polyurethane

PA-Like Resin

Used for clips, brackets, mechanical parts, snap-fit features, and components exposed to repeated loading.

Good toughness and fatigue resistance
Suitable for functional testing
Supports thin and complex structural features

POM-Like Resin

Used for gears, guides, latches, sliding parts, and precision mechanical components.

Good stiffness and dimensional stability
Low-friction material characteristics
Suitable for moving and fitted assemblies

Machining Difficulty: Low
Lead Time: 3 days

PP-Like Polyurethane

Used for containers, covers, clips, flexible housings, and parts requiring controlled deformation.

Lightweight and slightly flexible
Good resistance to repeated bending
Suitable for snap-fit and functional prototypes

Machining Difficulty: Low
Lead Time: 3 days

PE-Like Polyurethane

Used for protective covers, flexible components, soft containers, and impact-resistant prototypes.

Good flexibility and toughness
Suitable for moisture-resistant applications
Provides a softer feel than rigid casting resin

PP-Like Polyurethane
PE-Like Polyurethane

PMMA-Like Clear Resin

Used for lenses, display windows, light covers, indicators, and transparent appearance prototypes.

High transparency after polishing
Supports tinted and translucent effects
Suitable for lighting and visual evaluation

Translucent Casting Resin

Used for diffusers, illuminated buttons, indicator covers, and light-transmitting housings.

Controlled light diffusion
Available in multiple colors and opacity levels
Suitable for lighting-effect validation

PMMA-Like Clear Resin
Translucent Casting Resin

Flexible Polyurethane

Used for grips, buttons, protective covers, seals, soft-touch parts, and overmold simulations.

Multiple hardness options
Good flexibility and elastic recovery
Suitable for ergonomic and sealing tests

Silicone Rubber

Used for gaskets, seals, soft components, medical-style prototypes, and heat-resistant flexible parts.

Soft and highly flexible
Good detail reproduction
Suitable for complex elastic components

Flexible Polyurethane
Silicone Rubber

Vacuum Casting Finishing Options

Finish	Description	Common Applications
As-Cast Color	Pigment is added during casting to produce consistent material color without full-surface painting.	Internal parts, functional prototypes, color-coded components
Spray Painting	Provides controlled color, gloss, texture, and production-like cosmetic appearance.	Product housings, consumer prototypes, appliance covers
Soft-Touch Coating	Creates a soft, tactile surface for ergonomic and premium appearance evaluation.	Grips, handheld products, control surfaces
Clear Polishing	Improves transparency and surface clarity on clear or translucent cast parts.	Lenses, lighting covers, display windows
Screen or Pad Printing	Adds logos, symbols, labels, scales, and operating information.	Buttons, control panels, branded housings
Texture Replication	Transfers matte, grain, leather-like, or other textures from the master pattern and silicone mold.	Automotive interiors, consumer housings, handles
Insert Installation	Adds threaded inserts, metal components, magnets, or assembly hardware.	Functional housings, mechanical prototypes, assembled products
Bonding and Assembly	Combines cast components with windows, seals, fasteners, or other parts.	Complete prototypes and low-volume assemblies

Not Sure Which Material Fits Your Part Best? Explore Material Guide →

Ready to Produce Your Vacuum-Cast Part

Share your CAD files, master model requirements, expected quantity, material properties, color references, and finishing specifications with TOP Prototype. Our engineers will review the design and recommend a suitable master pattern, silicone mold structure, casting material, and finishing process.

Design and Moldability Review
Material Simulation Recommendations
Color and Finish Evaluation
Quantity and Mold-Life Planning
Clear Production Quotation

Why Choose Our Vacuum Casting?

Engineering Support

We review part geometry, wall thickness, undercuts, master patterns, mold separation, resin selection, and finishing requirements before production.

Flexible Low-Volume Production

Vacuum casting supports multiple part variants and small production batches without hard injection mold tooling.

Production-Like Appearance

Silicone molds can reproduce fine surface details, textures, colors, and cosmetic features from the approved master.

Multiple Material Options

Rigid, transparent, translucent, flexible, and rubber-like materials support different prototype requirements.

Integrated Finishing

Painting, polishing, printing, insert installation, bonding, and assembly can be completed within one coordinated workflow.

Confidential Project Management

Customer drawings, CAD files, product concepts, color references, and development information are managed under structured confidentiality controls.

TOP Prototype Resources and FAQs

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