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Urethane Casting Service

Produce high-fidelity prototypes and low-volume production parts with InstaMFG’s urethane casting services, delivering components in as fast as 7 days. Our process utilizes silicone molds and polyurethane resins to replicate intricate designs with precision, ideal for functional testing and market validation.

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Commonly Used Materials:

We offer a variety of polyurethane resins to suit different application needs:​

  • Rigid Polyurethane – for durable, impact-resistant parts

  • Flexible Polyurethane – for components requiring elasticity

  • High-Temperature Polyurethane – suitable for parts exposed to elevated temperatures

  • Transparent Polyurethane – for clear or tinted parts

  • Flame-Retardant Polyurethane – for applications requiring fire resistance​

These materials can be tailored to mimic the properties of production-grade plastics, providing versatility in prototyping and low-volume manufacturing

InstaMFG combines advanced mold design strategies with rapid tooling techniques to deliver production-quality molded parts in just 48 hours. Our high-speed workflow integrates precision-machined inserts, modular base systems, and digital tool path optimization to reduce lead times without compromising part accuracy. Each mold is engineered with high repeatability in mind, achieving tolerances up to ±0.01 mm and supporting a wide range of geometries. We ensure process reliability through closed-loop monitoring of fill behavior, cycle temperature, and part ejection. Additionally, material selection is supported by real-time resin conditioning and pre-processing, ensuring optimal performance for both functional and visual requirements.

Urethane Casting Design Guide

Learn how to optimize your designs for urethane casting, including considerations for draft angles, wall thickness, and surface finishes, to ensure high-quality results and efficient production.

Why Choose Urethane Casting for Rapid Prototyping

Urethane casting offers a cost-effective and efficient solution for producing high-quality prototypes and low-volume production parts. With shorter lead times compared to traditional manufacturing methods, it enables faster product development cycles. The process allows for the replication of intricate details and complex geometries, making it ideal for functional testing and market validation. Additionally, urethane casting supports a wide range of material properties, from rigid to flexible, catering to diverse application requirements

Functional Validation & Pre-Production Testing

Urethane casting is not only ideal for prototyping but also excels in functional validation and pre-production testing. This process allows for the creation of parts that closely mimic the mechanical properties of final production components, enabling thorough testing under real-world conditions. By evaluating aspects such as fit, form, and function early in the development cycle, potential design flaws can be identified and addressed promptly, reducing time-to-market and minimizing costly revisions later in the production process.

Customization & Aesthetic Replication

Urethane casting offers extensive customization options to replicate the aesthetics of final products accurately. Through the use of master patterns and silicone molds, intricate surface textures and fine details can be faithfully reproduced. Additionally, a wide range of color options and finishes are available, allowing for the creation of parts that meet specific visual and tactile requirements. This level of customization ensures that prototypes not only function as intended but also provide a realistic representation of the final product's appearance.

Get an online quote and manufacturing analysis today.