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MJF 3D printing service

Upload your CAD files, receive an instant HP Multi Jet Fusion 3D printing quote and get your parts into production in less than 5 minutes.

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Functional partsIsotropic propertiesLead times from 6 days

What is MJF?

Multi Jet Fusion (MJF) is HP’s proprietary 3D printing process.


In MJF, parts are built by jetting a binding agent onto thin layers of polymer powder particles (typically nylon) and then sintering them using an IR heat source.


MJF produces functional plastic parts with isotropic mechanical properties that can be used for detailed prototyping or end-use low-volume production.

Our MJF 3D printing service

From prototyping to small-batch production, our global network of certified MJF 3D printing facilities will allow you to produce highly accurate parts with quality comparable to injection molding.

Upload your CAD file for a free quote and manufacturability review and get your parts into production in less than 5 minutes.

Capabilities Description
Maximum build size * 380 x 285 x 380 mm (14.9'' x 11.2'' x 14.9'')
Standard lead time * 6 business days
Dimensional accuracy ± 0.3% with a lower limit on ± 0.3 mm (0.012'')
Layer thickness 100 μm

* For expedited shipping or parts that exceed the maximum build size contact sales@3dhubs.com

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Available materials for MJF 3D printing

MJF produces parts from engineering thermoplastics. Here is the list of our standard MJF 3D printing materials.

Material Description
Nylon 12 (PA 12) Nylon 12 is a robust thermoplastic with all-around excellent physical properties and chemical resistance, ideal for functional prototypes and end-use applications.
Nylon 11 (PA 11) Nylon 11 is a bioplastic with simillar properties to Nylon 12, produced from renewable materials that are derived from vegetable oils.
Glass-filled Nylon (PA 12 GF) Glass-filled nylon is reinforced with glass bead and creates parts with higher stiffness and thermal stability than standard nylon.

Available surface finishes for MJF 3D printing

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

  Finish Description
4-MJF-grey Gray As printed MJF parts are typically grey in color and have a smooth surface, without visible layers, and a powder texture.
4-MJF-black Dyed (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.
SLS finish tumbling Tumble 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.
SLS Blasted Bead blasting * Bead blasting (shot pinning) adds a uniform matte or satin surface finish on a 3D printed part, removing all layer lines.
SLS spray painting Spray painting * MJF parts can be spray painted white, black or to a specified RAL or Pantone color.
MJF watertight Watertightning * MJF parts with wall thickness greater than 4 mm are watertight up to 20 bar without any additional post processing.
Nickle platting Metal plating * Electroless metal plating (nickel, copper or gold) is ideal for prototypes that require a metallic appearance.

* These finishes are available by contacting sales@3dhubs.com

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Ideal MJF applications

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

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

3DP 101 - MJF nylon part

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 units

Dorien Sarsby, UK Strategic Account Manager Dorien Sarsby UK Strategic Account Manager
Jennifer Kaari, US Strategic Account Manager Jennifer Kaari US Strategic Account Manager
David Nguyen, EMEA Sales Engineer David Nguyen EMEA Sales Engineer

For businesses of all sizes

Get in touch with our team to access these services:

  • Add 3D Hubs as a vendor
  • ISO 9001, material certifications, test reports and full dimensional reports
  • Non-disclosure agreements
  • Urethane casting and part marking
  • Design verification program (learn more)
  • Dedicated account manager

Contact Sales or call us directly on

Design guidelines for MJF

The table below summarizes the recommended and technically feasible values for the most common features encountered in 3D printed parts.

Feature Recommended size
Unsupported walls 1.0 mm (0.040'')
Supported walls 0.7 mm (0.030'')
Minimum detail size 0.25 mm (0.010'')
Minimum hole size 1.0 mm (0.040'')
Moving parts 0.5 mm (0.020'') between moving surfaces
Assembly clearance 0.4 mm (0.016'') between mating surfaces
Maximum wall thickness 20 mm (0.8''). Thicker parts must be hollowed and contain at least two escape holes for powder removal with a min. diameter of 8 mm (0.3'').

Learn more about the process in our Knowledge Base article.

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