MJF 3D Printing Basics

MJF 3D Printing Basics

MJF (Multi Jet Fusion) 3D printing is a relatively new 3D printing technology that has been gaining popularity in recent years. It was developed by HP (Hewlett-Packard) and was first introduced to the market in 2016. Since then, it has been used to produce a wide range of products, from small prototypes to large-scale industrial parts. In this blog post, we will explore what MJF 3D printing is, how it works, and its advantages and disadvantages.

What is MJF 3D printing?

MJF 3D printing is a powder-based 3D printing technology that uses a multi-agent printing process to build objects layer by layer. The process involves the use of a thermal inkjet array to selectively fuse powdered material, resulting in a finished product that is both strong and durable.

How does it work?

The MJF 3D printing process involves a series of steps, including:

  1. Preparing the print bed: The first step in the process is to prepare the print bed by applying a layer of fusing agent. This agent helps the powder particles to stick together during the printing process.
  2. Applying the powder: Once the print bed is prepared, a layer of powder is applied to it. This powder can be made from a variety of materials, including nylon, polypropylene, and TPU (thermoplastic polyurethane).
  3. Printing: The thermal inkjet array is then used to selectively apply a fusing agent to the powder layer, which causes it to fuse together in the desired pattern.
  4. Repeating the process: This process is repeated layer by layer until the desired object is fully formed.
  5. Post-processing: Once the object is printed, it is removed from the print bed and any excess powder is removed. The object may then be further processed or finished as needed.

Advantages of MJF 3D printing

There are several advantages to using MJF 3D printing, including:

  1. Speed: MJF 3D printing is one of the fastest 3D printing technologies available. This is due to the fact that it can print multiple layers at once, which significantly reduces the time it takes to produce a finished product.
  2. Durability: MJF 3D printed objects are very strong and durable, making them ideal for a wide range of applications.
  3. Precision: MJF 3D printing can produce very precise and accurate objects, with a high level of detail and resolution.
  4. Versatility: MJF 3D printing can be used to produce a wide range of objects, from small parts to large-scale industrial components.

Disadvantages of MJF 3D printing

While there are many advantages to using MJF 3D printing, there are also some disadvantages to consider, including:

  1. Cost: MJF 3D printing can be more expensive than other 3D printing technologies, particularly for smaller projects.
  2. Limited materials: While there are a range of materials that can be used for MJF 3D printing, the selection is still relatively limited compared to other 3D printing technologies.
  3. Complexity: The MJF 3D printing process can be complex and difficult to set up and operate, particularly for beginners.


MJF 3D printing is a powerful and versatile technology that is well-suited to a wide range of applications. While it does have some disadvantages, such as cost and complexity, its speed, durability, and precision make it an attractive option for many businesses and individuals. If you are interested in using MJF 3D printing for your next project, it is important to research and consider all of the options available to you, as well as any potential challenges or limitations

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