Pros of Urethane Casting

July 13, 2021


Urethane resin first emerged in the 1930s. It was and is still in use since then.

Urethane or polyurethane is pretty versatile in its use. This resin is used to manufacture products that are on a spectrum of both rubbery and firm. Urethane is frequently used to make items that are of plastic nature.

Urethane castings are a good, cheap, adaptable, and high-quality method for manufacturing entire parts and models. It provides fast production of detail-oriented objects which are high in terms of quality and with a great finish that is too cost-effectively. It is way better than 3D printing or injection molding. Read on to learn more about the benefits of cast polyurethane.

The benefits include:

Cost Saver:

Polyurethane casting resin components are usually less expensive in piece value than additive producing once a bigger range of prototypes is needed. Large-scale manufacturing could need multiple builds to fabricate a larger number of prototypes, which can increase the price. The cast urethane method can endlessly mold parts.

Silicone polymer molds are used to compose cast urethane pieces. The value for silicone molds is usually way less pricey than aluminum or steel tools employed in injection molding. The variation in terms of expense is almost in a ratio of 1:10. Urethane casting costs hundreds to thousands of dollars whereas injection molding cost ranges from thousands to tens of thousands of dollars.

Quality of Product:

The urethane casting process can produce soft or hard, colored or transparent parts using a variety of formulations. Silicone molds offer excellent surface quality and can closely mimic production textures.


In addition, components can be over-molded, fitted with built-in inserts, and reworked, e.g. by painting.


Urethane casting manufactures parts with physical properties on the same level as injection molding, and as compared to 3D printing these parts are structure-wise of better quality. Despite constant improvements, 3D printing still has limitations in terms of structural and material integrity. Urethane casting, on another hand, produces robust, high-quality pieces.

Speed of Production:

In contrast to injection molding that takes 4 to 12 weeks for tooling, urethane casting is much faster. The urethane casting technique is extremely swift as a result of the silicone polymer molds used to build components via this process are created very quickly, it's ideal for low-volume production, especially when quantities don't justify investment in injection mold tooling.

It's great for testing product design, unique products, or testing market or consumer reactions to a new product, also in terms of short-term production or end-user testing with such a speedy creation time, urethane-casted products can take a project to the next level. Giving a company a first to market advantage.

End Finish of Product:

The strength and surface finish of the urethane cast product is very similar to injection molded pieces. Similar to injection molding, urethane-casted pieces can be customized in terms of color, and texture. This indicates that urethane cast parts will still look good even if they are scratched or otherwise damaged.


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