MJF 3D printing service
Source 3D-printed parts using our advanced Multi Jet Fusion (MJF) capabilities. We offer functional prototyping services and capacity for production at scale with several high-quality finishing options available. Lead times from 3 days.
What is Multi Jet Fusion?
Multi Jet Fusion (MJF) is a cutting-edge 3D printing technology designed to rapidly produce highly accurate and intricate parts from powdered thermoplastics. Known for its ability to create complex geometries with fine detail and exceptional tensile strength, MJF is ideal for manufacturing industrial-grade components. Developed by HP, this advanced process delivers parts with isotropic mechanical properties, making it perfect for functional prototypes and end-use production. Its combination of speed, precision, and strength makes MJF a top choice for applications requiring both complex designs and superior mechanical and cosmetic qualities.
MJF (Multi Jet Fusion) capabilities
FDM 3D printing has two distinct classes: prototyping (desktop) FDM and industrial FDM. These are the key capabilities of both technologies.
| Maximum build size | Standard lead time | Dimensional accuracy | Layer height | Minimum feature size |
|---|---|---|---|---|
| 380 × 284 × 380 mm | From 3 business days | ± 0.3% with a lower limit of ± 0.3 mm (± 0.012 in) | 80μm | 0.5 mm |
MJF 3D printing uses strong, versatile materials
Leading companies across many industries use MJF for its industrial-grade materials
| Material | Color | Resolution | Tensile strength | Elongation at break | Heat deflection temperature | Application |
|---|---|---|---|---|---|---|
| HP PA 12 (Nylon 12) | Gray, dyed black | 80μm | 48 MPa | 15-20 % | 95-175 °C | Functional prototypes, complex assemblies, watertight applications |
| Glass-filled HP PA 12 (US only) | Gray | 80μm | 30 MPa | 6.5 % | 121-173 °C | Enclosures, housings, cases, fixtures, structural parts, tooling |
Surface finishes for MJF 3D printing
One of the benefits of MJF 3D printing is how well part surfaces come out, especially after post-processing. Here are the surface finishes available for MJF.
As printed (gray)
Gray color, smooth surface, without visible layers, powder texture
Dyed (black)
Dyed black by immersion in a warm color bath. The color reaches a depth of about 0.5 mm on all surfaces.
Tumble smoothing
The parts are placed in a tumbler of ceramic chips, creating a polished finish similar to injection molding.
Vapor Smoothing
Creates an even glossy finish across the outer layer of a part by exposing it to a solvent.
How MJF stacks up against other 3D printing technologies
| Technologies | Materials | Price | Dimensional accuracy | Strengths | Build volume | Layer thickness | Min. feature size |
|---|---|---|---|---|---|---|---|
| FDM | 5 | $ | ± 0.5% with a lower limit on ± 0.5 mm | Low cost, wide range of materials | 500 x 500 x 500 mm (19.68" x 19.68" x 19.68") | 100-300μm | 2.0 mm (0.0787’') |
| Industrial FDM | 6 | $$$$ | ± 0.3% with a lower limit of ± 0.3 mm (± 0.012") | High level of repeatability, engineering grade materials | 406 x 355 x 406 mm (15.98” x 13.97” x 15.98") | 100-330μm | 2.0 mm (0.0787’') |
| Prototyping SLA | 8 | $$ | ± 0.3% with a lower limit of ± 0.3 mm (± 0.012") | Smooth surface finish, fine feature details | 145 × 145 × 175 mm (5.7" x 5.7" x 6.8") | 50-100μm | 0.2 mm (0.00787’') |
| Industrial SLA | 3 | $$$ | ± 0.2% with a lower limit of ± 0.13 mm (± 0.005") | Smooth surface finish, fine feature details, big print area | 500 x 500 x 500 mm (19.68" x 19.68" x 19.68") | 50-100μm | 0.2 mm (0.00787’') |
| SLS | 2 | $$ | ± 0.3% with a lower limit of ± 0.3 mm (± 0.012”) | Design flexibility, supports not required | 395 x 500 x 395 mm (15.53" x 19.68" x 15.53") | 100μm | 0.5 mm (0.0196”) |
| MJF | 2 | $$ | ± 0.3% with a lower limit on ± 0.3 mm (0.012’') | Design flexibility, supports not required | 380 x 285 x 380 mm (14.9’’ x 11.2’’ x 14.9’') | 80μm | 0.5 mm (0.0196”) |
We have high standards for MJF 3D printing
We manufacture your custom parts according to strict manufacturing standards.
- Bead blasting and air blasting are used to remove any remaining unfused powder.
- To improve cosmetic appearance, additional post-processing can be applied, including dyeing, vapor smoothing and tumbling.
Advantages and drawbacks of MJF 3D printing
Multi Jet Fusion (MJF) is a fast, precise 3D printing technology ideal for producing durable, detailed parts. It excels at creating complex geometries without support structures and offers uniform mechanical strength. Despite its material limitations and higher equipment costs, MJF is highly efficient in terms of speed and material usage, making it a popular choice for industrial applications requiring high performance and design flexibility.
Advantages
Drawbacks
Design guidelines for MJF
This table summarizes the recommended and technically feasible values for the most common features of MJF 3D printed parts.
Learn more about how to design parts for MJF 3D printing
| Feature | Recommended size |
|---|---|
| Unsupported walls | 1.0 mm (0.040 in) |
| Supported walls | 0.7 mm (0.030 in) |
| Minimum detail size | 0.25 mm (0.010 in) |
| Minimum hole size | 1.0 mm (0.040 in) |
| Moving parts | 0.5 mm (0.020 in) |
| Assembly clearance | 0.4 mm (0.016 in) |
| Maximum wall thickness | 20 mm (0.8 in) |
Our other 3D printing processes
With over 90 3D printing hubs, we deliver high-quality parts at competitive prices. From rapid prototyping with FDM to functional end-use parts using SLS and MJF, we guarantee premium results every time.