Multi Jet Fusion (MJF)

At a Glance

Lifecycle

Lead Time

Materials

Resolution

Functional testing, low to mid volume prototyping (10s - 100s)
3-5 days
0.08 mm

About the Process

Multi Jet Fusion is a new 3D printing technology, offering you more possibilities for complex, lower-cost parts. Whether used in serial production for single parts or batch manufacturing by shipsets of multiple part numbers, Multi Jet Fusion offers a faster, more cost-effective process for 3D printed parts.

Multi Jet Fusion is ideal for hidden applications like complex thin-wall ductwork, connectors, non-cosmetic housings, brackets, covers, wiring clips, guides and grommets.

Multi Jet Fusion uses a fine-grained PA 12 material that allows for ultra-thin layers of 80 microns. This leads to parts with high density and low porosity, compared to PA 12 parts produced with Laser Sintering.

It also leads to an exceptionally smooth surface straight out of the printer, and functional parts need minimal post-production finishing. That means short lead times, ideal for functional prototypes and small series of end-parts.

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Materials

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Nylon PA12

Discover enhanced production possibilities of Nylon 12
utilized with the speed possible with Multi Jet Fusion.
With good chemical resistance and low moisture
absorption.

Nylon 12 is ideal for high-volume functional
prototypes & limited-run production.

Material

PA12

Lead Time

3-5 days

Resolution

0.08 mm

Pricing

Max Temp

ASTM D648
175°C @ 0.45 MPa
95°C @ 1.82 MPa

Choose MJF for:

Choose a different process for:

High-accuracy functional prototypes from a wide range of engineering materials
Low-cost visual prototypes for form and fit (choose FDM or SLA/DLP)
Cost-effective, low-volume production of end-use parts for volumes of 1 to 300 units
Production volumes greater than 500 units (choose Injection molding)
Isotropic parts with complex geometry (no need for support structures)
Parts with tight tolerances and low surface roughness (choose CNC machining or Silicone Molding)

Ideal MJF applications

Our in-house manufacturing experts recommend using MJF for the following use cases.

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Functional prototyping

MJF is ideal for fabricating functional prototypes from durable, chemically resistant engineering thermoplastics.

Requirements

Strength: Medium/High

Appearance: Smooth surface

Quantity: 1-5 parts

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Low-volume production

MJF is cost-competitive to injection molding for low-volume manufacturing of end-use plastics parts for quantities up to 300 units.

Requirements

Strength: Medium/High

Appearance: Injection molding-like

Quantity: 10-300 parts

Surface finishes

Additional post processes can be applied to improve the appearance or mechanical properties of parts produced with MJF.

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Gray

As printed MJF parts are typically grey in color and have a smooth surface, without visible layers, and a powder texture.

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Black

MJF parts are dyed black by immersing in a warm color bath. The color penetration reaches an approximate depth of 0.5 mm and covers all surfaces.

The following finishes are available by contacting support@shapefy.in

Finish

Description

Smoothing
The parts are placed in a tumbler that contains small ceramic chips, gradually eroding its surface down to a polished injection molding-like finish.
Bead blasting
Bead blasting (shot pinning) adds a uniform matte or satin surface finish on a 3D printed part.
Spray painting
SLS pars can be spray painted white, black or to a specified RAL or Pantone color.
Water tightening
SLS parts can be impregnated with resin, sealing all internal porosity, ensuring water tightness.

Design Recommendations

Max Part Size

Min Feature Size

Tolerance

Min Wall Thickness

Min Hole Diameter

Min Gaps for Mating Parts

406 x 305 x 406 mm
0.25 mm
±0.3% (with lower limit on ±0.3 mm)
1 mm, but living hinges are possible at 0.5 mm
1 mm
0.2 mm minimum; 0.5 mm between shells of an interlocking part.

+ Design for Manufacturing Tips

- For long, thin parts: use ribbing to mitigate warping risks