The Urethane Casting Process
Urethane Cast Parts Have Material Properties Similar to Production Plastics.
Cast Urethanes are ideal for short run production prototypes that require tough physical properties and impact resistance. These parts can be surface finished, cast-in-color, and/or painted. They are very accurate with the capability of producing small details.
- Urethane Casting process begins by first building an SLA master pattern. Typically, draft and small undercuts are not an issue because the silicone mold is flexible. Larger undercuts can be accommodated by using hand loaded tooling.
- The SLA model, master pattern, is finished to a pattern level finish. The master pattern is attached to a gate assembly and suspended into either a frame or a box. Silicone is then poured around the master pattern and time is allowed for it to cure. Once the silicone is cured, cuts will be made to remove the master pattern from the mold.
- Once the master pattern is removed, the mold is reassembled and urethane material is poured in to create a urethane casting. Once the urethane has hardened, it is removed and the process can be repeated using the same mold to cast additional parts. Typically, these molds can produce up to 20 parts.
Parts may also be cast in color instead of painted to prevent color from chipping. Textures may also be added to SLA patterns by directly transferring it to the mold when it is created.
Why Choose Incodema3D for Urethane Cast Parts?
We will help you - from building your SLA part to casting your urethane part. From the approval of your SLA part, we can move quickly to urethane casting for a rapid turnaround. Incodema3D understands and provides all rapid prototyping processes for every stage of your part.