Industrial 3D printing for fast & reliable manufacturing

HP Multi Jet Fusion (MJF)

HP MultiJet Fusion (MJF)

Our industry leading in-house HP Multi Jet Fusion 3d printing service operates from our dedicated production facility providing batch production and prototyping.  We chose the HP MJF machine over the more common SLS 3d technology as it was designed from the ground up for the huge growth in 3d print manufacturing offering both speed and efficiency for industrial scale additive manufacturing.  Trusted by industry leaders like Jaguar Landrover and BMW, HP Multi Jet Fusion from Midlands 3D provides the very best in 3d printed components.

With these machines, we are able to provide the fastest turnaround, lowest possible unit price and a more accurate and robust part than SLS alternatives.  Whether you require a one-off prototype or large batches of end use parts, our manufacturing facility can provide strong, accurate and durable parts, primarily using Nylon PA12.

Confused about MJF vs FDM? …try our simple guide HERE

 “With Multi Jet Fusion technology, the material is fully fused, creating fully dense parts with high mechanical properties”

Functional prototypes

Robust, high quality prints perfect for an iterative design process that requires detailed functional components prior to mass manufacture via 3D printing or other technologies.

End Use Parts

Using industrial grade PA12 nylon and finished in natural grey or deep dye black, MJF printed parts are suited to a vast range of both indoor and outdoor applications.

Batch Production

Volume production is a core strength of Multi Jet Fusion, used at scale by OEM manufacturers around the world and SME organisations alike.  Scaling from a single part to volume manufacturing is seamless.

380mm x 284mm x 284mm

When printed, parts are suspended within the build volume, held in a block of PA12 powder at the optimum print orientation for print quality.  Larger parts can be printed in sections and assembled prior to post-processing.  We’ve printed parts as large as vehicle bumpers!

Express Service – 2+ Days
Standard Service – 3+ Days
Manufacturing Partner – We will manufacture and deliver to an agreed schedule offering you the best pricing whilst maximising print efficiency

Standard MJF printed parts are a mottled grey finish.  Our Print to Product workflow from DyeMansion provides options of Polshot surfacing and Deep Dye finishing to provide a professional end-use part finish.  MJF parts are also well suited for painting to a RAL colour of your choice or hydro-dipping for a truly unique appearance.

Layer Height – 0.08mm (80 microns)
Tolerance – ± 0.3% (min: ± 0.15 mm)
Minimum wall thickness – 1mm

Did you know?  Poor MJF print quality is almost always due to bad practice when preparing a print job.  Parts are orientated for maximum packing density to favour reducing printing cost versus optimum print quality.  At Midlands 3D, we will always favour print quality over packing density to give the highest quality and most consistent prints; its how we have earned and retain our HP Multi Jet Fusion Production Professional certification.

MATERIAL – PA12 Nylon

Ideal for producing strong, low-cost, quality parts

 

  • Robust thermoplastic produces high density parts with balanced property profiles and strong structures

  • Provides good chemical resistance to oils, greases, aliphatic hydrocarbons, and alkalis

  • Ideal for complex assemblies, housings, enclosures, and watertight applications

  • Biocompatibility—meets USP Class I-VI and US FDA guidance for Intact Skin Surface Devices

HP MJF PA12

Why use MJF 3d printing?

MJF is a popular choice for 3d printed functional parts over more common processes such as SLS due to….

Increased Strength – An MJF part is isotropic meaning it has strength in all three axis, unlike SLS or FDM where weakness in the Z axis is a result of the production process due to the print process.  An MJF layer of nylon is fully melted with every layer whereas SLS or FDM are melted only at a molecular level.

Uniform finish on all surfaces and exceptional detail for powder bed fusion parts – Whereas an FDM print requires support material for overhangs, which is subsequently removed leaving a degraded underside surface, MJF parts are created encased in powder which is removed as part of the post processing stage.  The fine powder leaves a surface finish consistent with the whole part.

Deep colouring of the part – MJF parts are naturally grey when removed from the machine, but can be vapour smoothed or dyed black with significantly deeper penetration than the 0.2mm (max) of a normally white SLS print.

Speed for volume production capability – HP design the machine and related workflow specifically for the manufacturing process and not just one-off prototyping meaning the cost savings of a fast and efficient print process can be passed on to our customers.