ABS-Like is a general purpose polyurethane plastic that simulates ABS thermoplastic. This material is a great choice for most product enclosures.
Acrylic-Like is a stiff, transparent polyurethane plastic that simulates acrylic (PMMA). This material is great for see-through applications such as light pipes.
Opaque Elastomer is a polyurethane plastic that simulates all kinds of rubber-like materials such as TPE, TPU, and silicone rubber. This material is great for wearables, gaskets, and overmolds and is available from Shore 20A to Shore 90A in 10A increments.
Waterclear Elastomer is a urethane casting material that simulates all kinds of rubber-like materials such as TPE, TPU, and silicone rubber. This material is great for wearables, gaskets, and overmolds and is available from Shore 30A to Shore 80A in 10A increments.
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Pigment is added to the liquid polyurethane prior to casting, so each casting has as-molded color. Customers may provide Pantone code for approximate color matching.
Paint is recommended for parts that require exact color matching. Very light colors or specific shades of white may only be achievable with painting. Pantone code or sample swatch must be provided for precise color matching.
A variety of textures can be achieved by texture painting the master prior to mold making or by painting the parts after casting.
Looks-like models for marketing photography, investor pitches, and trade shows
Prototype elastomeric parts such as complex gaskets
Cost effective way to produce 100 EVT units before cutting injection molding tool
Low-volume production orders for customized, small-batch products (20-200 units at a time)
Urethane casting (also known as RTV molding, cast urethane, and silicone molding) is a fabrication method that uses silicone molds to produce production-quality plastic parts.
Urethane Casting production consists of three main steps:
1. Build a master pattern using 3D printing or CNC machining
2. Build the mold by pouring platinum silicone around master
3. Pour liquid polyurethane resin into mold, create polyurethane casting under vacuum
With urethane casting, you can get production quality parts at low volumes and without the high costs and lead times of steel or aluminum tooling. This is helpful for bringing new products to market where you may want production-grade products to test with new customers and markets and validate your design hypotheses before making a substantial investment to scale manufacturing.
If you are familiar with designing parts for injection molding, you can apply the same best practices and rules of thumb to design parts for urethane casting. For a detailed resource on how to design your parts for urethane casting, download our free Urethane Casting Design Guide.