
“Polyform” – Polyurethane Casting Resin: Precision and Speed for Prototyping and Small Batch Production
Polyform polyurethane casting resin is a trusted choice among professionals and hobbyists aiming for detailed, durable castings with a fast turnaround. Whether you are involved in rapid prototyping, model making, or small batch production, this beige resin is engineered to meet your requirements efficiently.
With its combination of ultra-fast curing, high fluidity, and reliable hardness, Polyform supports a streamlined workflow without compromising detail or strength. Read on to learn more about the product’s features, usage, and best practices.
What it is / What it’s for
Polyform Polyurethane Casting Resin is designed for professionals and makers who prioritise speed and precision in their casting projects. This resin performs particularly well in applications such as rapid prototyping, detailed 3D model manufacturing, and small batch product runs.
The formulation is beige and non-toxic once fully cured, ensuring safe handling for users. It delivers consistent, high-fidelity details in every pour, making it suitable for complex silicone moulds found in advanced prototype and model work.
Its Shore A 100 hardness rating means the resulting casts are robust and wear-resistant, ideal for components requiring durability alongside visual detail. The product is especially useful for:
- Industrial designers and professional makers engaged in prototyping
- Small batch manufacturers needing precise, quick results
For more options within this field, visit the products category for 3D models here.
How to use

- Prepare your workspace: Ensure the room temperature is above 8–10°C as Polyform performs best within this range.
- Wear safety gear: Use gloves and protective eyewear during mixing and pouring.
- Mixing components: Combine parts A and B of the resin at a weight ratio of 90 to 100. Accurate measurement is essential for optimal setting and final properties.
- Stir thoroughly: Mix gently yet thoroughly to avoid introducing bubbles while ensuring a homogeneous resin blend.
- Pouring: The resin’s viscosity is around 70 mPa·s, facilitating easy pouring. Pour the resin into your prepared silicone mould slowly to fill intricate details effectively.
- Curing time: Polyform cures quickly—set time is approximately 5 minutes, with demoulding possible after 30 minutes.
- Post-cure handling: Once fully cured, the product is non-toxic and safe to handle.
For straightforward procurement, the product is available at Polyform – Polyurethane Casting Resin – Beige.
Tips & common mistakes
- Accurate ratio: Mixing the resin parts at an incorrect ratio is a common error that can lead to improper curing or subpar mechanical properties.
- Temperature sensitivity: Using the resin below the recommended temperature range can slow or prevent proper curing. Always work in a suitably warm environment.
- Avoid colouring attempts: Polyform’s natural beige colour is fixed; it is not suitable for colouring with dyes, which can interfere with the curing process.
- Mould preparation: Ensure silicone moulds are clean and dry to avoid defects in casting detail or adhesion issues.
- Pour slowly: High fluidity makes it easy to fill fine details, but pouring too quickly can cause bubbles or overflow.
- Personal safety: Although non-toxic once cured, always use gloves and eyewear during handling, as recommended by the manufacturer.
FAQ
- How long does Polyform take to cure?
- It sets in about 5 minutes and can be demoulded after approximately 30 minutes.
- Can I colour Polyform casting resin?
- No, this beige resin is not suitable for colouring with dyes.
- What safety precautions should I take?
- Wear gloves and protective eyewear during mixing and pouring. Once cured, the resin is safe and non-toxic to handle.
- What is the recommended mixing ratio?
- The parts A and B should be mixed at 90/100 by weight for best results.
- Can I use Polyform resin in cold environments?
- The resin should not be used below 8–10°C as lower temperatures may affect curing performance.
Closing
Polyform polyurethane casting resin offers a reliable, fast-setting, and robust solution for rapid prototyping and small batch manufacturing. Its ease of use and precision detail replication make it a practical choice for professionals and hobbyists alike. To explore this product and related casting materials for models, visit Polyform product page and the 3D models product category.
Examples

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