3iD | 3D idea printing

Multi Jet Fusion (MJF) 3D-printing

Multi Jet Fusion, often abbreviated as MJF, is an advanced industrial 3D printing technique in which polyamide powder is built up layer by layer using fusing agents and energy. The results are parts with exceptional mechanical properties and dimensional accuracy.

The Benefits of MJF Printing

Superior Mechanical Properties

MJF printing produces parts with excellent strength and durability. The material’s density and uniformity result in components with mechanical properties comparable to injection-molded parts in many cases.

 

High Dimensional Accuracy

It offers outstanding dimensional precision and repeatability. Even when producing multiple parts, the properties and dimensions remain consistent—crucial for industrial applications.

 

Efficient Production

The MJF printing process is especially efficient for medium to large production runs. Multiple parts can be printed simultaneously, significantly lowering the cost per unit at higher volumes.

 

Excellent Surface Quality

MJF produces parts with a uniform, matte finish ideal for functional applications. The technology delivers parts with no visible layer lines, resulting in a smooth and consistent surface.

Applications of MJF 3D Printing

Functional End-Use Parts

MJF produces industrial-grade parts ready for direct use in final products and machinery. With tensile strengths up to 50 MPa and heat resistance up to 175°C, these components withstand demanding environments and continuous mechanical stress, enabling immediate implementation.

 

Industrial Components

MJF produces highly precise components for industrial applications, with minimal dimensional deviations of just 0.3%. This precision ensures that mounting plates, machine parts, and housings fit seamlessly into existing systems—critical for the reliability of industrial equipment where every part must perform exactly as intended.

 

Small and Medium Production Runs

MJF is ideal for series of 10 to 5,000 units, without the cost of molds or tooling. With lead times as short as 3–5 working days, MJF is up to 10 times faster than traditional methods—perfect for companies seeking rapid production. This efficiency makes the technology especially valuable for short production runs and temporary manufacturing.

 

Lightweight Structures

MJF printing offers excellent opportunities for weight reduction by enabling complex internal structures that are up to 60% lighter than solid parts—without compromising strength. This is crucial for applications in aerospace, automotive, and sporting equipment.

Finishing Options for MJF

Black Dye Treatment

With a black dye treatment, MJF parts gain a sleek, deep-black appearance. The dye penetrates deep into the material, ensuring the color remains even after prolonged use.

 

Vapor Smoothing Finish

Vapor smoothing creates a smooth surface by eliminating layer lines. The result is a sleek, glossy finish that not only looks better but also improves water resistance and durability.

 

Color Finishing

We offer various color options that bond perfectly with MJF material. You can choose from matte, satin, or glossy finishes—all with the same durable quality.

MJF Compared to Other 3D Printing Techniques

When selecting the right technique for your project, MJF offers unique advantages over other commonly used technologies:

 

MJF vs. Stereolithography (SLA)

While SLA excels in detail and transparency, MJF delivers superior mechanical properties. MJF parts are up to 5× stronger and have significantly higher impact resistance, making them the preferred choice for all functional applications that must withstand stress. MJF parts are ready for end-use implementation, while SLA parts are often limited to visual prototypes.

 

More about SLA printing

 

MJF vs. Fused Deposition Modeling (FDM)

MJF significantly outperforms FDM in both mechanical properties and surface quality. MJF parts feature near-100% density without the weak layer bonds typical of FDM prints. Moreover, MJF offers up to 10× faster production speeds when printing multiple parts, making it the economical choice for serious production runs.

 

MJF vs. Selective Laser Sintering (SLS)

Although both technologies use polyamide powder, MJF offers a 30% faster production process with 40% better material properties. MJF achieves more uniform curing with less porosity, resulting in stronger and more consistent parts.

 

More about SLS printing



Not sure which 3D printing technique is best for your project?

Unsure about the right 3D printing technique for your specific application? Get in touch with us! At 3iD, we are happy to think with you to find the perfect solution for your project. 

 

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Technical Specifications

 

Parameter

Specification

Layer Thickness

0.025 - 0.1 mm

Minimum Wall Thickness

0.3 - 0.5 mm

Maximum Build Dimensions

250 × 250 × 300 mm

Dimensional Accuracy

±0.05 mm

Standard Finish

Matte, no visible layer lines

Typical Lead Time

2-5 working days

 

Frequently Asked Questions about SLA 3D Printing

Are SLA printed parts waterproof?

SLA parts can be made waterproof, but this requires careful design and post-processing. Thin walls may be slightly permeable, but with the right materials and wall thicknesses, fully waterproof parts can be created.

 

How accurate is SLA 3D printing?

SLA is one of the most accurate 3D printing techniques, with typical tolerances of ±0.05mm for small parts. Accuracy can vary depending on the geometry, orientation, and material properties.

 

What is the maximum size for SLA printed parts?

Our SLA printers can produce objects with specific maximum dimensions. In practice, 'too large' pieces are designed in a way that they form one strong piece using a dovetail connection or a pin-and-hole system. We have yet to encounter the first design that we cannot print.

 

Can I print transparent parts with SLA?

Absolutely! One of the unique advantages of SLA is the ability to print fully transparent parts. With proper post-processing (polishing or coating), these parts can achieve optical clarity comparable to cast acrylic.

Other Services

In addition to SLA 3D printing, we offer various other services:

  • PA12 & TPU Plastic Printing - For strong and flexible parts
  • Prototyping and Small Series - From idea to tangible model
  • Mass 3D Printing - For larger volumes up to 30,000 pieces
  • Design & Full-Service Support - From A to Z
  • Industrial Components - Functional parts for machine construction