Produce small runs of polyurethane parts from silicone molds with vacuum casting. A fast, affordable way to get production-look parts before injection molding tooling.
ISO 9001:2015 | ISO 13485:2016 | IATF 16949:2016
| Comparison Factor | Pressure Die Casting | Gravity Die Casting | Sand Casting | Lost Wax Casting |
| Best For | High-volume thin-wall parts | Medium-volume stronger parts | Large or low-volume parts | Complex shapes with fine detail |
| Typical Materials | Aluminum, zinc, magnesium | Aluminum, copper alloys | Iron, steel, aluminum, bronze | Steel, stainless steel, alloys |
| Tooling Cost | High | Medium | Low | Medium |
| Typical Applications | Housings, covers, brackets | Wheels, pump parts | Machinery bodies, large parts | Valve and aerospace parts |
Aluminum is the most widely cast metal, giving lightweight parts with good corrosion resistance and thermal conductivity.
Lightweight with good strength
Good corrosion resistance
Good thermal conductivity
A380, ADC12, A356, A360
Housings, heat sinks, automotive and electronic components
Machining, anodizing, powder coating, painting
Zinc alloys cast thin walls and fine detail well, and are suitable for small, precise, and decorative parts.
Excellent fine detail and thin walls
Good dimensional stability
Good plating results
Zamak 3, Zamak 5, ZA-8
Small hardware, connectors, decorative parts
Plating, painting, polishing
Magnesium is the lightest structural metal, used where weight reduction is the priority.
Very low density
Good stiffness for its weight
Good vibration damping
AZ91D, AM60B
Laptop and device frames, automotive components
Conversion coating, painting
Sand and investment casting produce steel and iron parts that need strength, wear resistance, or large size.
High strength and toughness
Suitable for large and heavy parts
Heat treatment possible
Ductile iron, carbon steel, 304/316 stainless (confirmed during project review)
Valves, pump bodies, machinery parts
Machining, heat treatment, painting
Cast urethane resins reproduce a master pattern in silicone molds for small batches of near-production-quality parts.
Wide range of hardness and colors
Good detail reproduction
Low tooling cost for small batches
Rigid, flexible, clear, flame-retardant (confirmed during project review)
Pre-series parts, housings, clear covers, overmolded prototypes
Painting, texturing, polishing
| Finishing Option | Typical Effect | Suitable Materials | Typical Use |
| As Cast | Natural cast surface; surface quality depends on process. | All cast metals | Non-visible and structural parts |
| Machining of Critical Features | Precise mating surfaces, holes, and threads. | All cast metals | Assemblies, sealing surfaces |
| Shot / Bead Blasting | Uniform matte surface. | Aluminum, zinc, steel | Housings, visible parts |
| Anodizing / Plating | Corrosion protection and appearance. | Aluminum, zinc | Consumer and industrial products |
| Powder Coating / Painting | Durable colored coating. | Aluminum, zinc, steel | Enclosures, covers |
| Capability | Typical Value |
| General Tolerances | Depends on casting process; tighter values with secondary machining |
| Wall Thickness | Confirmed during DFM review for the chosen process |
| Tooling Lead Time | Confirmed after DFM review and mold design |
| Order Quantity | From small batches to high-volume production, depending on process |
Vacuum casting (urethane casting) pours polyurethane resin into a silicone mold under vacuum to reproduce a master pattern. Choose it for small batches of near-production-quality parts without hard tooling.
A range of materials is available, including Aluminum Alloys, Zinc Alloys, Magnesium Alloys, Steel & Iron, Polyurethane Resins. The best choice depends on strength, appearance, operating environment, and budget. Our engineers can help you select the right one during the quote review.
Achievable tolerances depend on material, part size, and geometry. Typical values are listed on this page, and tighter tolerances can often be held on critical features. Share your drawing and we will confirm during the DFM review.
Yes. We support everything from a single prototype to ongoing production programs, so you can scale without changing supplier.
Cost depends on material, part size and complexity, quantity, tolerances, and finishing. Upload your CAD model and drawing to receive a quote, and our engineers can suggest design changes that reduce cost.
We accept common 3D CAD and 2D drawing formats, including STEP, STP, IGES, STL, SLDPRT, X_T, DXF, DWG, and PDF. If your format is not listed, please contact us.
Lead time depends on process, quantity, and finishing. Prototypes can often ship within a few business days, and we ship worldwide. Contact us with your requirements for a lead-time estimate.
A silicone mold typically produces a limited number of parts, and the exact quantity depends on part geometry and material. We advise on this during quoting.
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Share your project details and files with us. Rough information is fine to start. Our engineering consultant will contact you within 24 hours.
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