Technology & Materials
Multi Jet Fusion
High‑volume precision with advanced powder‑bed fusion...
What is Multi Jet Fusion and how does it work?
Multi Jet Fusion (MJF) is an advanced powder bed fusion technology designed for producing high‑volume, functional parts with exceptional detail. It combines elements of binder jetting with the material properties of Selective Laser Sintering (SLS), offering reliable performance, crisp features and excellent dimensional accuracy.
During the MJF process, an inkjet head is used to print a heat‑absorbent ink across a thin layer of nylon powder placed on the build platform. This agent marks the precise areas where the powder should fuse. An infrared lamp and a series of heaters then pass over the bed, causing the treated regions to absorb heat and solidify. Layer by layer, this method builds dense, durable 3D‑printed parts with low porosity and consistent mechanical properties.
MJF is particularly well‑suited to producing complex geometries, thin walls, and detailed features, making it a strong choice for both prototyping and end‑use production across a wide range of industries.
What are the material properties of MJF PA12?
MJF PA12 is a robust nylon material for producing high-density parts with balanced property profiles and detailed structures.
- Industry‑standard Nylon 12 formulation: the most widely used material for Multi Jet Fusion.
- Excellent dimensional stability: low moisture absorption and more consistent mechanical properties than SLS parts, which are typically weaker along the print direction.
- High-density, low‑porosity parts: ideal for strong, functional components with a smooth finish.
- Flexible post‑processing options: PA12 parts can be sandblasted, smoothed, painted, joined and dyed.
- Crisp detail and thin‑wall capability: perfect when you require finer features than those achievable with Selective Laser Sintering.
MJF in action
How MJF Helped Transform Orthopaedic Rehabilitation
Ricoh 3D supported The Robert Jones and Agnes Hunt Orthopaedic Hospital, NHS Foundation Trust, with precise, MJF‑printed models for orthopaedic solutions.
Discover how advanced additive manufacturing made a measurable difference in real‑world healthcare.
