Multi Jet Fusion (MJF) 3D Printing Technology

What Is Multi Jet Fusion 3D Printing?

Multi Jet Fusion is a powerful industrial 3D printing process that enables the rapid production of highly accurate durable parts, offering many advantages over processes such as selective laser sintering. Multi-jet fused parts are ideal for end-use applications, small and medium series production, rapid prototyping or as a link in injection molding.

Multi Jet Fusion 3D Printing principle

MJF technology uses two separate thermal inkjet arrays to create full-color 3D objects. When printing, one of them moves from side to side, ejecting material, causing one to move up and down, spraying, coloring and depositing to give the finished product the desired strength and texture. The two arrays then change direction to maximize coverage and productivity. A refiner is then sprayed onto the already formed structure. After that, the outside heats up the parts that have been and are being deposited. These steps are repeated until the entire object is printed in layers.

How does multi jet fusion work ?

The multi jet fusion process begins by coating the working area with a layer of material. In the opposite direction, the machine prints fuses and refiners across the entire work area in one continuous scan. This pass combines the printing and fixing energy, and the whole process is complete. This innovative multi jet fusion 3d printing technology allows rapid printing along the width of the bed, allowing for extremely high precision and dimensional accuracy.

Multi Jet Fusion Design Guidelines

Our multi-jet fusion includes design guidelines that focus on improving part manufacturability, enhancing appearance, and reducing overall production time.

Feature	Suggested Size
Wall Thickness	0.5 mm
Minimum Feature Size	0.25 mm
Minimum Hole Size	1 mm
Maximum Part Size	284mm x 380mm x 380mm
Assembly clearance	0.4 mm between contact surfaces

MJF Materials

What are the HP MJF materials available in Lori? At present, you can generally choose PA11, nylon HP PA12, glass filled HP PA12 and PP.

Nylon PA11

Nylon PA 11 has better flexibility and excellent impact resistance, which is suitable for the production of prosthetics, insoles, sports goods, fasteners, movable hinges, etc. Has better high and low temperature performance, better stiffness. Suitable for the production of rigid functional components and high-stiffness applications such as housings and cases, fixtures and tools.

Nylon PA12

Nylon 12 (PA 12): Nylon 12 is a strong thermoplastic material with high tensile strength, overall excellent physical properties and chemical resistance, is ideal for high-volume functional prototyping and small-batch end-use production applications. It can be applied to the structure and function of auto parts and supplies, such as the structure and function certification of car baffles, mirrors, dashboards, steering wheels, lights, seats and handlebars.

Glass-filled PA 12

Glass-filled nylon PA12 is reinforced with glass beads to makes parts with thermal stability and higher stiffness than standard nylon，Glass-filled nylon PA 12 also allows for a higher maximum use temperature. Suitable for applications such as housings and enclosures, fixtures and tools.

MJF Surface Finish Options

Vapor Smoothing -AMT's chemical vapor polishing technology

The principle of Vapor Smoothing is not complicated. After contact with solvent vapor, the surface of the MJF printed part will dissolve, and the micro-convex part of the surface will dissolve preferentially, and the dissolution rate is higher than that of the concave part. The surface of the dissolved liquid is affected by tension and tends to shrink as much as possible. The raised part will flow downward to the concave part, and a uniform and smooth surface will be produced after solidification.

Dyed a standard black color

Sand blasting removes all powder and leaves a consistent overall texture. Then the parts are dyed standard black.

Other options

Grinding, Spraying, Plating. Simply add this to the live quote engine as a custom finish option

Advantages of MJF 3D Printing Process

1. The MJF process can simplify workflows and reduce costs, enabling rapid prototyping to achieve groundbreaking economic parts manufacturing.

2. An open materials and software innovation platform that lowers barriers to use and supports new applications across industries.

3. MJF 3D printing can produce end-use parts with near-isotropic characteristics on demand, and the performance of the products is better. Manual finishing is rarely required. This makes it ideal for mass production of functional parts.

4.The printing speed for small batch orders is fast and the comprehensive cost is competitive.

5. The printing speed for small batch orders is fast and the comprehensive cost is competitive

Related Resources

If you want to learn more resources about multi jet fusion, the following resources are for your reference

HP multi jet fusion technology for 3D automotive parts

2023-10-25

HP's multi jet fusion 3D printing solutions capabilities are ideal for producing customized, high-quality 3D automotive parts.

HP MJF 3D printing technology in the automotive industry application

2023-10-26

HP MJF 3D printing has a wide range of applications in the automotive industry. From the fixture used in automotive assembly to the production and use of automotive parts.

MJF multi jet fusion technology makes medical 3D printing customization easier

2023-10-26

MJF multi jet fusion technology makes medical 3D printing customization easier, 3D printing Medical applications including 3D printed custom insoles, rehabilitation brace, etc.

Multi Jet Fusion (MJF) nylon 3D printing service

2023-10-26

Lori can provide you with a variety of 3D printed nylon parts with our multi jet fusion process, you are welcome to upload the 3D model, we can provide you with an instant quote.

Multi Jet Fusion 3D Printing