MJF 3D printing basics

MJF (Multi Jet Fusion) 3D printing: an overview of a rising technology

MJF (Multi Jet Fusion) 3D printing is a relatively new technology in the 3D printing world, developed by HP (Hewlett-Packard) and introduced in 2016. It has quickly gained popularity for producing a wide range of products, from small prototypes to large-scale industrial parts. This blog post explores MJF 3D printing, its workings, and its pros and cons.

What is MJF 3D printing?

MJF 3D printing is a powder-based technology that uses a multi-agent process to build objects layer by layer. It involves a thermal inkjet array to selectively fuse powdered material, resulting in strong and durable products.

How does it work?

The MJF process includes several steps:

• Preparing the print bed by applying a fusing agent.
• Applying a layer of powder, made from materials like nylon, polypropylene, or TPU (thermoplastic polyurethane).
• Using the thermal inkjet array to selectively apply a fusing agent to the powder, fusing it in the desired pattern.
• Repeating these steps layer by layer until the object is complete.
• Post-processing involves removing the object from the print bed, cleaning off excess powder, and any additional finishing needed.

Advantages of MJF 3D printing

• Speed: One of the fastest 3D printing technologies, capable of printing multiple layers simultaneously.
• Durability: Produces strong and durable objects, suitable for various applications.
• Precision: Achieves high precision and detail in printed objects.
• Versatility: Suitable for a wide range of objects, from small parts to large industrial components.

Disadvantages of MJF 3D printing

• Cost: Can be more expensive than other technologies, especially for smaller projects.
• Limited materials: The range of materials is still relatively limited compared to other technologies.
• Complexity: The process can be complex and challenging for beginners.

Conclusion

MJF 3D printing offers a powerful and versatile solution for a broad range of applications. Despite its higher cost and complexity, its speed, durability, and precision make it an appealing option for many businesses and individuals. If considering MJF 3D printing for your next project, it's important to thoroughly research and weigh the available options, as well as potential challenges and limitations.