3D PRINTING
MJF 3D Printing Service
Multi Jet Fusion for functional nylon parts — fast, strong and production-ready.
24/7
Production
50,000+
Parts Delivered
200+
Machines
50K+
Global Customers
WHAT IS MJF?
Multi Jet Fusion (MJF) is a powder-bed fusion technology developed by HP. It uses an array of inkjet print heads to selectively fuse nylon powder layer by layer, producing functional, isotropic parts with fine detail and smooth surface finish.
Unlike SLS, MJF uses a fusing agent and detailing agent to achieve finer edge resolution and consistent mechanical properties across all axes — making it ideal for functional prototypes, end-use parts and low-volume production.
- Isotropic strength in all directions
- Fine detail and sharp edges
- Fast turnaround, as fast as 2-3 days
- Suitable for batch production up to 500 pcs
Materials We Print With
Engineering-grade materials for functional prototypes and production parts.
PA12
General purpose nylon
PA12 GB
Glass bead filled
PA11
Bio-based, flexible
PP
Polypropylene-like
TPU
Flexible elastomer
PA6
High strength nylon
Compare MJF Material Properties
| Material | Colour | Tensile Strength | Tensile Modulus | Elongation |
|---|---|---|---|---|
| PA 12 | Black | 49 MPa ± 4 MPa | 1900 MPa ± 200 MPa | 12% ± 4% |
| PA 12-Glass Beads | Black | 30 MPa ± 5 MPa | 2500 MPa ± 400 MPa | 10 ± 5% |
| PA 12 Flame Retardant Grey | Grey | 46 MPa | 2540 MPa | 4% |
| PA 11 | Black | 52 MPa | 1800 MPa | 35% |
| Ultrasint™ TPU01-88A | Black | 9 MPa ± 2 MPa | 75 MPa | >220% |
How It Works
Upload Your CAD File
Send us your STL or STEP files via email or our upload portal.
Cleaning
Unpowdering and bead blasting.
We Print & Post-process
MJF builds your parts overnight.
Finishing
Dyeing, smoothing or coating as needed.
Fast Turnaround
Parts in as fast as 2-3 days.
High Detail
Fine features and smooth surface finish.
Isotropic Strength
Uniform mechanical properties in all directions.
Cost-effective
Competitive pricing for small to medium batches.
YYI3D FAQs
Find quick answers about manufacturability, lead times, materials, finishes, quality documentation, and compliance. Need more support? Start a quote or explore our Help Center.
What is the difference between MJF and SLS?
MJF uses inkjet fusing agents for finer edge detail and more consistent isotropic properties. SLS uses a CO2 laser and tends to be better for larger parts.
What materials can you use for MJF?
PA12, PA12 Glass Beads, PA11, Polypropylene (PP), TPU flexible, and PA6. We also offer dyeing in black and other colors.
What is the lead time for MJF parts?
Standard parts ship in 2-3 days. Larger batches or parts requiring additional finishing take 4-7 days.
Can MJF parts be used for end-use production?
Yes. MJF produces functional parts with good mechanical properties, widely used in automotive, industrial and consumer electronics end-use applications up to 500 pcs.