MJF stands for Multi Jet Fusion

Which is a 3D printing process developed by HP. It is an industrial 3D printing technology that uses a combination of thermal energy and binding agents to create 3D objects from powdered thermoplastics.

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The MJF Process: Step by Step

Slice the model

First, the 3D model of the object to be printed is created and sliced using specialized software.

Load Material

The MJF printer’s build chamber is then filled with a layer of powdered thermoplastic material, nylon for example.

Spray fusing agent & detailing agent

An array of inkjet printheads then selectively applies a layer of fusing agent and detailing agent onto the powder bed. This is done in a pattern that corresponds to the cross-section of the object being printed. The detailing agent is only placed along the outline of the part.

Activate agent with heat

The fusing agent and detailing agent are then activated using thermal energy, which causes the powder particles to fuse together in the areas where the fusing agent was applied. The non-fused powder remains loose and can be reused in subsequent prints. The detailing agent is designed to evaporate quickly when exposed to heat, leaving behind a thin layer of material on the surface of the printed part. This layer helps to smooth out any rough surfaces or texture created during the fusing process, resulting in a final part with a higher-quality surface finish.

Print layer by layer

Once the first layer is complete, the build platform is lowered slightly, and the process is repeated layer by layer until the final object is complete. Each layer is only a few microns thick, resulting in a highly detailed and accurate final part.

Cooling

After printing is complete, the part is left to cool down to room temperature before it is removed from the printer.

Remove excess power

Any excess powder is then removed from the part using compressed air or other methods.

Post process

The final part may undergo additional post-processing, such as sanding or tumbling, to improve its surface finish and overall appearance.

Advantages of MJF Printing

Speed

MJF is one of the fastest 3D printing technologies available, with the ability to produce parts up to ten times faster than other 3D printing technologies like FDM (Fused Deposition Modeling).

High-Quality Parts

MJF produces high-quality parts with fine details and textures, making it ideal for complex geometries and intricate designs.

Cost Efficiency

MJF can produce parts more cost-effectively than other methods, especially for small-to-medium-sized batches of production parts, especially when you need better function and better strength prototypes.

Reduced Waste

MJF produces less waste than other 3D printing technologies, such as SLS, since it only uses the amount of powder required to create the part. This can help to reduce material costs and improve sustainability.

Post-Processing Efficiency

MJF produces parts with a smooth surface finish, which can reduce the amount of time and effort needed for post-processing finishing tasks like sanding or polishing.

MJF Material available in CapableMachining

Material	Color(s)	Tensile Strength （MPA)	Elongation at Break	Tempature Resistancce
PA11	Black, Grey	52 Mpa	50%	54°C
PA12	Black, Grey	48 Mpa	20%	95°C
PA12 GB 40%	Black, Grey	30 Mpa	6.50%	120°C

CapableMachining’s cutting-edge MJF (Multi Jet Fusion) 3D printing service – the perfect technology to bring your most innovative ideas to life.

With our advanced MJF service, we can create highly detailed and complex parts in a fraction of the time compared to traditional manufacturing methods. Our team of experts work closely with you to ensure your project meets all specifications and exceeds your expectations. Plus, with industrial grade nylon, we have a solution for a lot of applications. The cost-effective and sustainable nature of MJF means you can produce higher quality parts with less waste, and at a fraction of the cost of traditional manufacturing. Whether you need to prototype, manufacture small batches, or create a full production run, CapableMachining’s service has you covered. Click the button blow to realize your design.