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3D Printing in PolyJet Resins

PolyJet is one of the most advanced 3D printing technologies due to its ability to manufacture parts out of multiple materials and colors at the same time. This makes it widely used for prototyping in the automotive, medical, and consumer product industries. It also finds use in the film industry in the manufacture of highly detailed props.

Polyjet PartPolyjet Part

About 3D Printing in PolyJet Resins

PolyJet materials are photopolymers that use UV light to cure the resins. The liquid resin is jetted in extremely thin layers onto a build platform and is immediately cured by UV light. The process is similar to that of inkjet printers. Just as an inkjet can print different colors, a PolyJet printer can use different materials and colors to create composite parts. An example of this would be simulating an overmolded product that has a rigid body with softer overmolding for handholds and grips. This is a unique benefit of PolyJet: the materials used when 3D printing in PolyJet resins can be combined in a single product.

3D Printed PolyJet Resins at a Glance
ApplicationLight duty, functional and visual prototypes, multi-material parts, multicolor parts
AdvantagesVery fast printing, multicolor and multi-material parts a single part, high-precision
DisdvantagesNot well suited for rough, high-use applications
Lead Time2 days on an expedited timeline. However, standard and economic lead times are available at lower costs.
Price$-$$
Minimum Feature Size0.050” (1.27 mm) or greater for Rigid, 0.080” (2.032 mm) or greater for Rubber-Like
Tolerances+/- 0.004” for the first inch is typical, plus +/- 0.002” for every inch thereafter
Layer Height0.0018"
Max Part Size19.3" x 15.4" x 7.9" (490.22 mm x 391.16 mm x 200.66 mm)

Rigid Clear Plastics

3D printing in PolyJet resins allows for the manufacture of transparent parts with materials that are designed to simulate standard thermoplastics such as acrylic. This material can be used to create highly detailed, functional prototypes of parts that need to be transparent.

Properties of Rigid Clear Polyjet Plastics
Tensile Strength (MPa) (X, Y, Z)Elongation at Break (%) (X, Y, Z)Hardness (Shore D)Colors and ClarityHeat Deflection Temperature (℃)
50-6510-2583-86Clear, Transparent45-50

Rigid and Opaque Polyjet Plastics

Using rigid plastic for 3D printing in PolyJet photopolymers allows for a wide range of colors. Each of these plastics has the same mechanical properties and only differs in terms of its color. These materials are ideal for creating detailed functional and visual prototypes as well as manufacturing fixtures. Colors can be mixed, enabling PolyJet parts to have an unmatched color palette.

Properties of Rigid and Opaque Polyjet Plastics
Tensile Strength (MPa)Elongation at Break (%)Hardness (Shore D)Colors and ClarityHeat Deflection Temperature (℃)
50-6510-2583-86Opaque, Gray (RGD850), Black (RGD875), White (RGD835), Yellow (RGD836), Cyan (RGD841), Magenta (RGD851)45-50

Rubber-like Polyjet Plastics

Using flexible plastic for 3D printing in PolyJet photopolymers can simulate rubber or other low durometer plastics. This enables the creation of multi-material prototypes that simulate overmolded injection molded products. These materials can be used exclusively or combined with other rigid PolyJet resins.

Properties of Rubber-like Polyjet Plastics
Tensile Strength, Yield (MPa)Elongation at Break (%)Hardness (Shore A)Colors and ClarityTensile Tear Resistance (kg/cm)
0.8-1.5170-22026-28Clear, Translucent (FLX930) Opaque, Black (FLX980)2-4

Digital Materials

Digital material is a phrase used to describe the unique capabilities of 3D printing in PolyJet photopolymers. Each of the above materials can be combined with each other in the same part. This allows for multi-material and multicolor parts without having to print parts separately and assemble them afterward. The result is highly complex prototypes that look like a complete product with all of the materials and colors intended for the final production version.

Finishes

Xometry offers a standard surface finish for 3D printing in PolyJet resins. 


  • Standard: Due to PolyJet 3D printing’s unique ability to create multicolor parts, it makes sense that these should be left in their standard, off-the-machine state. This is after any support material is removed from the part. 
  • Custom: In addition to the standard finishes available, custom requests such as sanding are available on request.

Multi material polyjet 3D printing services

Cost-saving Design Tips

To save costs when 3D printing in PolyJet resin, follow these cost-saving design tips:


  • DFM: PolyJet 3D printing allows for multi-material parts. In order to achieve this, the part must be designed so that each material and color can be divided into a discrete solid in the CAD model. Each of these is then assigned a material in the slicer. Overhangs require support structure and enclosed voids may not be possible.
  • Choose the right parts: PolyJet printing is very good at creating functional, multi-material parts. As such, it’s best to leverage this ability only on parts that can benefit from this. Single color and material parts may be better suited on a cheaper 3D printing platform like HP MJF, SLS, or FDM 3D printing.
    FDM 3d print large part mail tray box
    Instant Quoting Engine

    Need Parts 3D Printed in PolyJet Resin?

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