PolyJet 3-D printing can produce multi-material prototypes that combine both rigid and elastomeric materials. This works well for developing medical devices and components like stethoscopes. Image credit: Proto Labs

Proto Labs, an online and technology-enabled quick-turn manufacturer, has added a fourth technology to its 3-D printing service. PolyJet technology is now offered along with stereolithography, selective laser sintering and direct metal laser sintering. The Minnesota-based company announced the development at the Advanced Manufacturing Expo in Cleveland, OH, held March 29-30, 2017.

PolyJet provides product designers and engineers with the ability to manufacture elastomeric and overmolded prototypes without investing in tooling. Designers can create 3-D-printed parts composed of both elastomeric and rigid materials as well as multiple colors. The produced parts feature smooth surface finishes and can support complex geometries with flexible features.

During PolyJet printing, the machine jets out droplets of liquid photopolymers onto the build platform where they are immediately UV cured. Once the build is complete, support structures are removed, and the parts are ready without the need for additional finishing.

Material selection includes multiple Shore A hardnesses of tear-resistant Agilus 30 for increased durability. The company also offers a range of durometers that work well for components like gaskets, seals and housings. Proto Labs’ proprietary software and digital approach to manufacturing allows customers to upload a 3-D CAD file of their design, receive an instant quote and have 3-D-printed parts in hand within days.