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HP Multi-Jet Fusion (MJF) 3D Printing

HP Multi-Jet Fusion (MJF) 3D Printing

Volume Production of End-Use Parts

High volume production of durable & functional end-use parts with a uniform matte finish

Durable, functional end-use parts ideal deal for high volume production.

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What is Multi-Jet Fusion?

Multi Jet Fusion (MJF) by HP is a new powder-based 3D printing process that chemically melts powder together. The machine uses a array of inkjet heads to selectively apply binding agents across a bed of polymer powder. Each pass of the print head fuses layers together in 80 micron layers to create durable, complex parts with a consistent surface finish & excellent mechanical properties.

Multi Jet Fusion is ideal for manufacturing end use parts at high volumes. The technology is powder based which means parts can be nested & stacked in the z-axis to rapidly produce parts at much higher volumes than any other 3D printing technology.

MJF 3D Printer

15" x 12"

Max X/Y Build Volume

± 0.3

MM Part Tolerances

2

Materials

3-6 Day

Average Lead Time

Materials | HP Multi-Jet Fusion

/multi-jet-fusion-mjf/#PA12grey

Grey PA12

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Black PA12

Grey PA12 Part

PA 12 Natural Grey

Tough and Durable

HP's high reusability PA 12 is a durable nylon material with excellent surface resolution. PA12 produced using Multi Jet Fusion is very high density (98%) makes the parts highly durable, and watertight right out of the printer. PA12 also meets meets USP Class I-VI and US FDA guidance for Biocompatability.

Tensile Strength

48 MPa

Tensile Elongation

20 %

Flexural Strength

70 MPa

Izod Impact, Notched

3.5 kJ/m2

Heat Deflection

95 °C @ 1.82 MPa

All Details
Material Data Sheet
Black PA12 Part

PA 12 Black

Tough and Durable

PA 12 is a durable nylon material with excellent surface resolution. PA12 produced using Multi Jet Fusion is very high density (98%) makes the parts highly durable, and watertight right out of the printer. PA12 also meets meets USP Class I-VI and US FDA guidance for Biocompatability.

Tensile Strength

48 MPa

Tensile Elongation

20 %

Flexural Strength

70 MPa

Izod Impact, Notched

3.5 kJ/m2

Heat Deflection

95 °C @ 1.82 MPa

All Details
Material Data Sheet

Advantages of Multi Jet Fusion

  • Durability

    Produces dense, functional parts with consisitent durablity. Tough enough for end-use, low-volume production.

  • Accurate

    Durable yet more accurate than FDM, MJF is capable of replicating small features with crisp details and a consistent surface finish.

  • Large Builds

    Hundreds of parts can be stacked and nested together in MJF’s spacious build of 380 x 284 x 380 mm (15 x 11.2 x 15 in)

  • Small Production Runs

    MJF is ideal for small production runs of end use parts with material properties comparable to injection molded parts.

Design Guidelines | Multi-Jet Fusion

HP Multi-Jet Fusion is an new additive manufacturing technology that bridges the gap between 3D printing and injection molding. The fastest manufacturing method on the market, Multi-Jet Fusion offers excellent throughput of thousands of parts per day off of a single machine.  

This design guidelines covers specific design parameters, which will need to be followed to prevent build failures from occurring. We have set the minimum allowed tolerances specified by the engineers from the manufacturer which will need to be followed or your parts may not meet the specific tolerances required or may cause the entire build to fail.

Optimizing your designs for Multi-Jet Fusion will help keep manufacturing costs down by ensuring the most efficient batch productions. The cost of a part is primarily based upon the X, Y, & Z extents of your part, therefore small, dense parts are priced the most competitively in this technology. There is no extra change for complexity, meaning even the most difficult geometries can be manufactured inexpensively and with ease. 

Forge Labs Multi- Jet Fusion 3D Printing machines have a building volume of: 380 x 284 x 380 mm (15 x 11.2 x 15 inches), a standard layer thickness of 80 um. Parts are manufactured additively using a sintering agents that are selectively deposited onto a bed of polymer to fuse layers together. This process allows for exceptionally fast manufacturing, and excellent resolution of small details. 

Parts produced by Multi Jet Fusion are also capable of meeting USP VI Biocompatibility for end-use-applications in medical products.

Download Full Design Guidelines
  • Minimum Wall Thickness

    1 mm

  • Engraved Details

    Thickness & depth of at least 0.9 mm

  • Embossed Details

    Thickness & depth of at least 0.7 mm

  • Clearance

    0.5 mm

  • Minimum Hole Size

    1.5 mm or 3 mm for internal chanels

  • Layer Height

    80 μm

  • Maximum Build Size

    380 x 284 x 380 mm. (15 x 11.2 x 15 inches)

  • Tolerances

    ±0.3%, with a lower limit of ±0.3 mm.

  • Surface Finish

    Parts are sandblasted and have a uniform grey matte texture

  • Warping & Deformities

    Long, flat planes are prone to warping & deformation