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Rapid Vacuum Casting OEM Services

5-7 Days Ultra-Fast Turnaround

Zero MOQ Flexible Prototype

Various Materials Available

Functional Post Finishing Options

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What is Vacuum Casting

Vacuum casting is a cost-effective rapid soft-tooling prototyping process that uses high-precision silicone molds to replicate full 3D part structures under vacuum negative pressure. It delivers finished parts with nearly identical surface quality, dimensional stability and mechanical properties as injection molding components, no expensive rigid steel mold required. It is the optimal solution for 1–500pcs low-batch verification, sample validation and pre-production trial runs.

Core Vacuum Casting Services

We customize high-precision durable silicone vacuum molds based on your original prototype CAD files. Our soft tooling achieves ultra-high 1:1 geometry replication accuracy, supports stable multi-batch copying and greatly shortens overall project development cycles.

Rapid Silicone Soft Tooling

High-Fidelity Vacuum Cast Components

We produce full-spec custom vacuum casting parts matching diversified resin material requirements. We support customized color matching, hardness adjustment and full post-casting treatments, perfectly meeting cosmetic appearance, structural strength and functional application demands of rapid prototype projects.

Essential Vacuum Casting Insights

Design & Replica Precision Control

We conduct professional DfRP design optimization for original prototypes, precisely compensating resin curing shrinkage. Reasonable parting line and vent structure design avoid bubble defects, warpage and dimensional deviation, ensuring consistent batch-to-batch replica accuracy.

Cost & Lead Time Control

Vacuum casting eliminates huge upfront rigid mold investment costs, far more cost-efficient than injection molding for small-batch orders. In-stock silicone molds & casting resins drastically shorten lead time, and fully smooth the seamless switching path from prototyping to formal rapid injection mass production.

Vacuum Casting Mold & Resin Materials

We provide full-series stable raw materials matching apt-mold industry standard specifications

Silicone Soft Mold Materials

Vacuum Cast Engineering Resins

High toughness, universal structural parts

ABS-like Resin

High-temperature resistant durable liquid silicone, long reusable mold life for repeated batch replication

PC-like Resin

PA Nylon Resin

Rubber-like Soft Resin

Flame Retardant & Custom Color Special Resins

High transparency, impact resistance

Wear resistance, high structural strength

Elastic sealing & flexible components

Custom Surface Finishes

Basic Finishes

Enhanced Functional Finishes

As-Cast Standard State

Deburring & Smooth Polishing

Vacuum Bead Blasting

Mold Texture Replication

Custom Pantone Color Painting

Silk Screen & Pad Printing

Assembly & Integrated Matching Treatment

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Vacuum Casting Tolerance Guide

Our vacuum casting dimensional accuracy strictly follows global rapid prototyping industry standards. Resin type, prototype size and mold structure will affect final part precision.

Contact selina@marigold-rapid.com for full official tolerance datasheet.

Hole Position Tolerance (±mm)

Flatness Tolerance (±mm)

Dimensional Tolerance (±mm)

Size Range (mm)

Material Type

Universal Cast Resin

Transparent/Soft Resin

1–50

0.06

0.18

0.09

51–150

151–300

1–50

0.11

0.17

0.07

0.29

0.41

0.20

0.14

0.21

0.10

Transparent/Soft Resin

51–150

0.12

0.31

0.15

*Note: We optimize silicone mold shrinkage compensation to maintain stable long-term batch replica consistency.

Key Advantages of Our Vacuum Casting

Vacuum casting is a highly flexible low-cost rapid replication process that creates injection-grade precise parts, supporting small-batch rapid production without expensive rigid tooling investment.

• Zero MOQ for single prototype & bulk batch orders
• Ultra-fast silicone soft mold fabrication cycle
• Near-identical quality to formal injection parts
• Abundant resin & custom color matching options
• Low overall prototyping development cost

• Free professional DFM prototype optimization analysis
• Long reusable service life of custom vacuum molds
• Stable dimensional repeatability across replica batches
• Minimal bubble defects & high surface finish quality
• Smooth seamless transfer to injection molding mass production

Industry Applications

Our high-fidelity vacuum casting replica parts cover all mainstream industrial rapid prototyping scenarios, fully meeting appearance, structural and functional standards from sample verification to pre-mass production trial batches.

• Automotive: Housing prototypes, sealing parts, interior decorative components
• Medical Devices: Non-invasive instrument shells, structural sample parts
• Consumer Electronics: Device enclosures, button assemblies, appearance verification parts
• Industrial Machinery: Mechanical brackets, functional fixture prototypes
• Smart Home & Aerospace: Lightweight custom precision structural components

Fast Turnaround Workflow

Step 1:

File Submission

Upload original prototype CAD & requirement files

Step 2:

Quote & DFM

24h fast pricing + free prototype design review

Step 3:

Soft Mold Making

Custom precision silicone vacuum mold fabrication

Step 4:

Vacuum Casting

Negative pressure resin forming & curing production

Step 5:

Finish & Inspection

Post-treatment & full dimensional quality checking

Step 6:

Pack & Ship

Expedited global delivery & order tracking

Frequently Asked Questions

How fast is your vacuum casting production lead time?

Small prototype orders ship within 5 days; bulk replica parts are delivered stably on schedule. We support both low-volume prototyping and high-volume pre-production batches, with scalable capacity and consistent quality across batches.

What’s the difference between vacuum casting and injection molding?

Vacuum casting uses low-cost silicone soft molds, ideal for 1–100pcs low volume quick verification. Injection molding uses durable steel rigid molds, suitable for large-scale long-term mass production. Our vacuum cast parts are highly consistent with injection parts in appearance and mechanical performance.

What is the maximum order quantity you support for vacuum casting?

We flexibly support 1 piece prototype to 100+ piece continuous replica production. We also provide professional mold switching suggestions to help you smoothly transfer subsequent orders to formal injection molding.