The process is unique among 3D printing technologies for its range of complex printers which are capable using multiple materials simultaneously to build a single part.
PolyJet is a highly versatile process and offers a cost-effective and fast way to achieve aesthetically appealing prototype parts at pre-production stage.
It is also ideal for short-run additive manufacturing of production parts.
Prototype Projects in-house PolyJet Facilities
Prototype Projects has a Stratasys Objet 260 Connex 3 multi-material 3D Printer.
The Objet260 Connex 3’s triple-jetting technology makes it possible to use a combination of materials and – as a result – a range of properties and finishes.
- Maximum build size (XYZ) 255 x 252 x 200 mm (10.0 x 9.9 x 7.9 in.)
- Resolution X-axis: 600 dpi; Y-axis: 600 dpi; Z-axis: 1600 dpi
- Accuracy 20-85 microns for features below 50 mm; up to 200 microns for full model size
- Minimum layer thickness horizontal build layers as fine as 16 microns (.0006 in.)
- Build modes digital material: 30-micron (.001 in.) resolution
- High quality: 16-micron (.0006 in.) resolution
- High speed: 30-micron (.001 in.) resolution
The PolyJet Process
PolyJet printing is a 3D printing process that sprays small droplets of photopolymer material on to the build platform where they are they are instantly cured using ultraviolet light. The part outline takes shape in layers from the platform upwards.
The unique aspect of PolyJet printing is that the printers have two or more spray heads, which can be used to combine different materials and over print in the same build.
The process results in a solid, plastic part of fine and accurate detail with a smooth surface and a range of properties including varying levels of translucency, rigidity, thermal resistance and Shore A values.
Parts can be finished by smoothing and painting, and are hard enough to be drilled or tapped. The support material can be quickly and easily removed.
When to use PolyJet
PolyJet is ideal for parts where more than one material will be required.
Examples include parts where an outer layer of softer, more flexible material is needed.
These layers can be ‘over printed’ in different materials to give a range of properties, features, thicknesses and harnesses.
Small numbers of very accurate parts can be created quickly for both prototyping and production purposes.
PolyJet Process Benefits
PolyJet is an increasingly popular rapid prototyping technology, and is one of the most versatile of all of the RP processes.
Used widely in the automotive, aerospace, consumer goods, electronics and medical sectors, this process is capable of producing highly accurate parts.
Benefits of the process include:
- Cost effective small part runs:Small numbers of parts can be produced quickly.
- Multi-material parts: multiple materials can be used in printing of a single part on a single job, producing a range of part properties.
- End-product match: due to the range of materials and multi-material capabilities of the process, parts can be matched precisely to the look and feel of complex products.
- Precision: ultra-thin 16-micron layer printing delivers fine detail parts with smooth surfaces, thin walls and complex shapes to 0.1 mm accuracy.
- Broad range of part properties
- Rigid to flexible properties
- Thermal resistance
- High level of feature complexity
- Smooth surface finish
- Ultra-thin layers ideal for over printing
- Parts can be drilled and tapped, sanded and painted
PolyJet materials offered by Prototype Projects allow us to offer parts with the following properties:
- Rigid opaque
- Simulated polypropylene
- Rubber-like – Shore A 27 > 95
Where two materials are used, they are mixed to generate different levels of tensile strength, elasticity, flexural strength and temperature durability.
Download the PolyJet materials datasheet for more details on the materials offered by Prototype Projects.
PolyJet materials datasheet
Finishing and delivery options
See our finishing and delivery options for Rapid Prototyping and Additive Manufacturing.