Vacuum Casting Services for Plastic Prototypes
Vacuum Casting Process
Step 1: Create the Silicone Mold
A master model is manufactured by CNC machining or 3D printing. Then pour liquid silicone into the box. After about 8 – 16 hours, the silicone mold becomes hardened.
Step 2: Vacuum Cast Part
The vacuum machine draws liquid into the mold under vacuum conditions. The material will flow into the cavity and remove bubbles and air pockets.
Step 3: Cure and deburr
Cure the mold and material at a temperature of 60–80 °C in the oven. After then, take the part from the silicone mold, deburr, etc.
Vacuum Casting Materials
Besides silicone, all of the other materials for the vacuum casting list are from polyurethane (PU) resins. In the formal industrial sector, they are usually named ” ABS-like, PP-like,”… However, in our daily communication, we usually drop the “like” for more convenience. Each resin is compounded to closely match the mechanical properties of the real one. And the parts look like they’re injection-molded parts.
MaterialSimulatesPropertiesRecommended
ABS-likeABSRigid, tough, good impact resistance, stable dimensions, easier painting and platingIndustrial housings, consumer electronics enclosures, automobiles, toys
PP-likePolypropylene (PP)Flexible, chemical-resistant, living hinge capable, low-frictionElectronic insulating components, transportation pipelines, chemical valves, and automotive interiors
PC-likePolycarbonate (PC)Transparent or translucent, high rigidity, good impact strength, UV stableTransparent casing, lampshade, display window, optical prototype
PMMA-likeAcrylic (PMMA)High optical clarity (~85–90% transmittance), rigid, polished, slightly less clear than real PMMADisplay boards, consumer electronics, automotive and transportation, decoration
PA-likeNylon (PA) Wear-resistant, self-lubricating, tough, moderate flexibility, good fatigue resistanceGears & bearings, hinges & clips, mechanical moving parts, structural test pieces
POM-likeDelrin / Acetal (POM)Very rigid, low friction, excellent dimensional stability, good creep resistancePrecision gears, mechanical parts, electronic and electrical components, automotive industry
Rubber-likeTPU / TPE / RubberElastic, excellent rebound, tear resistant, hardness range from very soft to semi-rigidSeals and gaskets, wearable devices, toys, consumer electronics
SiliconeSilicone rubber (LSR/HTV)Biocompatible, heat-resistant, excellent flexibility, non-toxicMedical device seals, health devices, consumer electronics, handicrafts
Industries We Serve with Vacuum Casting
At Yuejing Machinery, we have experience working with our clients from different industries, to help custom and deliver vacuum casting parts Here are 4 common industries, but not limited to those.
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Automotive

Car Doors GrillesInteriors
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Consumer Electronics

Wearables AppliancesSmart Home
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Medical & Healthcare

HousingsDentalABS Parts
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The Beginning: Building a Foundation in Apparel Manufacturing

EnclosuresPanelsPrototyping
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Automotive

Many tuning design companies for automotive choose vacuum casting to produce. From 5 to 20 pieces, ideal for a small batch of car doors, grilles, bumpers, etc. Or R&D in automotive manufacturing, developing a new car to test before opening the mold. Or custom ABS, silicone, and rubber vacuum casting parts used for vehicle interiors, such as the center console assembly and panel, upper and lower instrument panel, air vent bezels, and more.

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Advantages of Vacuum Casting Parts

Cost-Effective

One mold can produce around 10–20 high-quality pieces from a single silicone mold, depending on the part specification and volume

Manufacturability of Complex Structures

Vacuum casting produces customized plastic parts in complex shapes in a single piece, with no glue lines or visible marks.

Flexible Hardness Shore Range

Available shore from 40 to 90 degrees to meet requirements. Also provides double-molding of soft and hard plastic in a single piece.

Multiple Post-processing Options

A range of surface finishes after casting is available, such as painting to match the color Ral or Pantone, chrome electroplating, etc.

Large-Part Capable (Up to 2,000 mm)

We are able to handle parts up to 2,000 mm in length. To meet many of the automotive parts' needs, such as bumpers, panels, and grills.

Fast Turnaround Time

Most orders can be completed the production within 6–10 business days. Compared with injection molding 5–8 weeks, it is faster a lot.

Parts We've Made

Thousands of vacuum-casting parts delivered to clients in 50+ countries. Here are some of the projects we’ve produced.

A small batch of consumer electronics housing manufactured via vacuum casting. Using ABS-like polyurethane resin material and with white spray-painting.
A small batch of consumer electronics housing manufactured via vacuum casting. Using ABS-like polyurethane resin material and with white spray-painting.
A small batch of consumer electronics housing manufactured via vacuum casting. Using ABS-like polyurethane resin material and with white spray-painting.
A small batch of consumer electronics housing manufactured via vacuum casting. Using ABS-like polyurethane resin material and with white spray-painting.
A small batch of consumer electronics housing manufactured via vacuum casting. Using ABS-like polyurethane resin material and with white spray-painting.

Frequently Asked Questions About Vacuum Casting

ABS, PC, PA, Rubber, Silicone, PMMA, POM, PU, and PP. The shore hardness can be chosen from 40 to 90 degrees. We offer custom colors, and the range of transparency is an option

Standard tolerance is ±0.1–0.3mm, depending on the part size, structure wall thickness, and material type, etc., and other factors. If you have a higher tolerance request for the parts, we recommend our CNC machining service.

One silicone mold can produce about 10–20 pieces of high-quality parts. After that, the part tolerance from the mold will be down, we often produce a new mold to continue the production, and maintain the quality.

The standard lead time is usually 6–10 business days for prototype -20 pieces. Larger orders of 50+ parts may take 2 weeks for delivery. While 200-500+ parts, about 3 – 4 weeks.

We offer a wide range of surface treatments, such as painting based on Pantone code, plating chrome, spray oil, polishing, and more.

Yes, we can embed inserts of metal or hard plastic both. Such as metal parts made from sheet metal fabrication. Or a regular nut column, nuts, or screw, etc.

Different drawing designs have different prices. The pricing depends on part volume, material, and complexity. Contact us today to get a quote.

How to Get a Quote or Order Vacuum Casting Parts

✓ 24-Hour Quote Response
✓ NDA Available
✓ ISO-Level Quality Standards
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Upload Your CAD Files

Send us your drawings in STP, STEP, and IGS formats.

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Engineering Review & Quote

Our engineers review the manufacturability and send the quote to you within 24 hours.

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Order Confirmation & Manufacturing

After getting your approval, production will start according to your drawing requirements.

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Inspection & Global Delivery

Before shipment, the dimensions and appearance of the parts will be inspected. Worldwide shipping by Express takes 3–5 days.

Start Your CNC Machining Project with Our Expert Team
Share your files with us and get a fast, free quote today
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Get In Touch

Add: Building F, No.2 Nanling Road, Xin'er Community, Xinqiao Subdistrict, Bao'an District, Shenzhen, Guangdong Province, P.R.China

Email: 1281883259@qq.com

Phone: +86 18948799832