MJF | 3DSPRO

Process

What is Multi Jet Fusion?+

Multi Jet Fusion (MJF) is a 3D printing technology developed by HP Inc. It uses a combination of inkjet printing and heating to create high-precision, durable parts from powdered materials, typically thermoplastic polymers.
How does HP Multi Jet Fusion work?+

The MJF process involves spreading a thin layer of powdered material over a build platform. A fusing agent is then selectively applied to the areas that need to be solidified, while a detailing agent is applied to enhance the edges. The build area is then heated, causing the fused areas to solidify while the rest remains in powder form. This process is repeated layer by layer until the part is complete.

What materials does Multi Jet Fusion use?+

MJF primarily uses thermoplastic materials such as Nylon PA 12, PA 11, and TPU. These materials are known for their strength, flexibility, and durability.

What are the advantages and disadvantages of MJF 3D Printing?+

MJF 3D printing offers high speed, excellent surface finish, design freedom, material efficiency, and isotropic properties but has limited material options, high initial costs, color limitations, and challenging powder handling.

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What are the applications of MJF 3D printing?+

MJF is used in various industries for producing functional prototypes, end-use parts, and small to medium production runs. Common applications include automotive components, consumer goods, medical devices, and aerospace parts.

What are the differences between Multi Jet Fusion and PolyJet?+

MJF uses a layer-by-layer approach with a fusing agent for thermoplastics, while PolyJet deposits and UV-cures photopolymers for high-resolution prints, excelling in color capabilities, and each has distinct material properties, surface finishes, applications, and post-processing requirements.

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What are the differences between Multi Jet Fusion and Selective Laser Sintering?+

Multi Jet Fusion (MJF) uses a fusing agent and infrared energy for thermoplastics, while Selective Laser Sintering (SLS) uses a laser for sintering powder, offering a broader material range and different post-processing requirements, with MJF suited for quick, fine-finish parts and SLS ideal for complex, high-performance applications.

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