Multi Jet Fusion (MJF) is a powerful 3D printing technology known for producing strong, accurate, and detailed parts quickly and efficiently. While it offers significant advantages for both prototyping and production, MJF 3D printing costs can vary depending on several key factors. Understanding these cost drivers can help you make informed decisions when planning a project or comparing manufacturing options.

1. Part Size and Volume

One of the most direct cost influences is the size and volume of the part. MJF uses a powder bed process, meaning the more space a part occupies in the build chamber, the more material is used—and the higher the cost. Larger or bulkier parts not only consume more material but may also take longer to print and require more energy.

2. Material Usage and Type

MJF typically uses nylon-based materials such as PA 12, PA 11, or TPU. The type of material selected can impact pricing, with flexible or high-performance options usually costing more than standard materials. Additionally, although unused powder is partially recyclable, each build still consumes a significant amount of new material, affecting cost.

3. Part Density and Wall Thickness

Solid parts with thick walls or high infill densities use more material and take longer to fuse, increasing the price. Optimizing part design with hollow sections, thinner walls, or lattice structures can reduce material use without compromising strength, helping to lower costs.

4. Quantity and Build Efficiency

MJF is well-suited for batch production, and cost per part often decreases significantly with higher quantities. This is due to more efficient build chamber packing, which allows multiple parts to be printed simultaneously, maximizing machine time and material use.

5. Post-Processing Requirements

While MJF parts come out of the printer with a relatively smooth and consistent finish, many applications require post-processing, such as bead blasting, dyeing, vapor smoothing, or machining. These additional steps add labor and time, which can increase the overall cost.

6. Design Complexity

Highly detailed or intricate designs can affect print time and handling. Although MJF doesn’t require support structures like FDM or SLA, complex geometries might still demand more careful nesting, cleaning, and finishing—especially for parts with internal channels or fine text.

7. Turnaround Time

Rush orders or expedited production can carry a premium. If a part is needed quickly, manufacturers may prioritize it in the production queue, often incurring higher costs due to changes in scheduling or reduced build efficiency.

8. Labor and Machine Time

The operational time of the printer and labor costs for setup, powder management, and quality checks also contribute to the total price. More intricate or demanding jobs naturally require more handling and oversight.

Conclusion

The cost of an MJF 3D printed part is influenced by a combination of design, material, quantity, and production considerations. To keep costs down, it's helpful to work with experienced service providers who can assist with design optimization, material selection, and efficient build planning. By understanding and balancing these factors, businesses can take full advantage of MJF’s speed, precision, and scalability—without overspending.