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Zigitech can deliver up to 20 parts within 15 days, depending on geometry complexity and order volume.
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Vacuum Casting
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Silicone mold making and urethane casting from one factory workflow - Stable quality for engineering prototypes and bridge production
- Fast quotation and responsive lead-time planning
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Vacuum Casting
Zigitech is fully capable of handling your vacuum casting and silicone molding needs. With years of hands-on manufacturing experience, we produce plastic parts to a reliable standard with practical cost control and fast turnaround.
Vacuum casting is an efficient method for rigid or flexible components and is ideal for high-quality prototypes, functional testing, concept validation, and display models. Urethane casting parts can be delivered in quantities from a few units up to hundreds based on your project stage.
As a machinery parts manufacturer and integrated Manufacturing Service partner, we support your project from data review to final part delivery. Contact us today for technical guidance and a fast quote.
Advantages of Vacuum Casting
Affordability
Silicone molds are significantly more cost-efficient than hard tooling, making this route ideal for low-volume programs.
Capable of Producing Large Parts
With the right mold strategy and casting setup, vacuum casting supports large-format plastic components.
Superior Surface Finish
Vacuum degassing helps remove trapped air and preserves fine details for cleaner cosmetic surfaces.
Color Options
Pigments can be blended into the resin system to create a wide range of stable color appearances.
Repeatability
Each silicone mold can generally support around 20 repeat cycles with consistent part quality.
Faster Quoting for Production-Ready Parts
01
Share the Part Design
Upload the model to kick off a fast technical review.
02
Review Quote & DFM Notes.
See immediate cost guidance plus practical feedback for efficient production.
03
Lock in Manufacturing Details.
Sign off on the final requirements before machining or molding begins.
04
Delivery in Motion.
Finished parts move from production control to outbound shipment.
What Is Vacuum Casting?
Vacuum casting is a manufacturing process that uses negative pressure to draw liquid resin into a silicone mold. Unlike injection molding, this method is optimized for rapid validation and short-run part delivery without hard tooling investment.
The workflow starts from a master pattern, typically produced by CNC machining or 3D printing. Zigitech then builds a silicone mold around that master, cures it, and prepares it for repeat casting cycles with stable dimensional control.
After mold preparation, resin is poured and vacuum-assisted to remove trapped air. This helps capture fine details, reduce bubbles, and produce consistent surfaces for prototype and low-volume parts.
Each cast part replicates the master geometry with high consistency. Once cured and demolded, the silicone tool can usually support around 20 cycles, making vacuum casting a practical choice for prototyping and small-batch Manufacturing Service needs.
Vacuum Casting Process
01
Master Building
The process begins with a master model created from your CAD data, usually by CNC machining or 3D printing. After dimensional and visual inspection, Zigitech releases the master for silicone mold preparation.
02
Mold Making
Liquid silicone is poured around the master pattern and cured under controlled temperature conditions. After full curing, the mold is split along the planned line and the master is removed for casting setup.
03
Part Casting
Casting resin is poured into the mold cavity and vacuum-assisted to reproduce the original geometry with high accuracy. Depending on part geometry, one silicone mold typically supports around 20 repeat casts.
Vacuum Casting Technical Specifications
Typical Lead Time
Up to 20 parts in 15 days or less, depending on part complexity and order volume.
Dimensional Accuracy
±0.3% with a lower limit of ±0.3 mm for dimensions smaller than 100 mm.
Minimum Wall Thickness
A minimum wall thickness of 0.75 mm is required for mold filling. For best stability, we recommend 1.5 mm or above.
Maximum Part Dimensions
Part size is limited by vacuum chamber capacity (1900 x 900 x 750 mm) and product volume (maximum 10 liters).
Typical Quantities
Up to 25 copies per mold, depending on mold complexity and resin system selection.
Color & Finishing
Pigments can be blended into liquid polyurethane before casting, with optional custom painting and texture finishing.
Vacuum Casting FAQ
Urethane casting is usually more cost-efficient for prototypes and low-volume demand because it avoids expensive hard tooling while still delivering good surface quality and dimensional stability.
Yes. Vacuum casting can produce production-quality parts for selected use cases, especially housings, covers, and other non-load-bearing components in bridge and short-run programs.
Silicone molds have a limited service life, typically around 20 cycles depending on geometry and resin. We can retain or dispose of molds based on your project request, and master models can also be returned on demand.
Verified Client Feedback
Trusted by teams shipping precision parts under real production deadlines.
We ordered aluminum manifolds for a pilot build and were watching the sealing surfaces closely. The parts arrived well packed and checked out cleanly during our incoming inspection.
What stood out was that the quote review connected design choices to production reality. Our team got clear notes on wall thickness, access, and finish instead of vague suggestions.
For a control cabinet program, the hardware insertion and bend details matched the released drawing set without surprises. That saved rework on our assembly side.
We asked for a tooling review before final approval and got specific comments on shutoffs and cosmetic risk. It felt like feedback from people who actually build these parts.
The turned shaft parts were consistent from sample to sample, which mattered because we were checking fit against bearings and seals. That repeatability is hard to fake.
We had one material question mid-order and got a straightforward answer with options, not a delayed sales response. That helped us keep our internal approvals moving.
The prototype covers looked good enough for customer demos but still gave us usable fit information. That balance was exactly what we needed at that stage.
Across a mixed order of parts and jigs, revision control stayed clear all the way through. That made our own internal tracking much easier when the shipment landed.
Put your parts into production today
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