PolyJet™

A. Process

PolyJetTM is an additive manufacturing/3D printing process which is similar to inkjet printing, but instead of depositing droplets of ink onto a paper, these 3D printers deposit droplets of material onto a print bed. The 3D prototype parts are formed layer by layer by simultaneously jetting different kinds of materials.

As with any form of 3D printing, a PolyJetTM part begins with a CAD file, which is then converted by a software into hundreds of horizontal layers depending on its size. Once the CAD data is sent to the PolyJetTM printer, drops of materials are jetted and deposited onto the print bed just like inkjet printing. Once the first layer is deposited onto the print bed, it is lowered by the thickness of one layer, a new layer is deposited, and the process repeats until the entire prototype is complete.


B. Materials

1. PolyJetTM Amber
This material is amber clear in appearance. It produces fine feature details and is available in two Z resolutions – 30 μm and 16 μm.
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2. PolyJetTM Amber Flex
This material is amber in appearance and is rubber-like. PolyJet™ overmolded parts include PolyJet™ white material with PolyJet™ amber material.
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3. PolyJetTM Black Flex
This material is black in appearance and simulates shore A elastomers. PolyJet™ overmolded parts include PolyJet™ white material with your choice of PolyJet™ black material.
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4. PolyJetTM Bright White
This material is bright white in appearance, and has improved toughness and dimensional stability. It simulates polypropylene and produces excellent surface finish.
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5. PolyJetTM Blue
This material is pale blue in appearance. It produces fine feature details and is available in two Z resolutions – 30 μm and 16 μm.
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6. PolyJetTM Clear
This material is transparent in appearance and has high dimensional stability. It produces fine feature details and is available in two Z resolutions – 30 μm and 16 μm.
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7. PolyJetTM Gray
This material is light gray in appearance and has high durability. It produces fine feature details and is available in two Z resolutions – 30 μm and 16 μm.
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8. PolyJetTM Green
This material is opaque green in appearance, and has high elongation at break and heat deflection temperature. It produces fine feature details and is available in 30 μm Z resolution.
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9. PolyJetTM White
This material is opaque white in appearance and has high durability. It produces fine feature details and is available in two Z resolutions – 30 μm and 16 μm.
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C. Design Guidelines

1. Maximum build size
Maximum size for prototypes that can be built using current PolyJetTM 3D printing technology is 39.3 in. x 31.4 in. x 19.6 in.

2. Tolerances
Tolerances of ±0.0035 in. can be typically achieved on prototypes that are well designed.


D. Surface Finishes
Smooth surface finishes can be obtained by eliminating the need for polishing and painting. Some materials can also withstand post processing options such as drilling and assembly.


E. Applications
PolyJetTM parts are most suited for detailed functional prototypes. PolyJetTM prototypes can also be used as mock ups to convey final-product aesthetics or for testing purposes.

Created by RedOrum