In the competitive landscape of 3D printing technologies, Multi Jet Fusion (MJF) and Selective Laser Sintering (SLS) have emerged as frontrunners. This blog post compares these two technologies, highlighting why MJF is increasingly being viewed as the superior option, particularly when using materials like unfilled Nylon 12 and TPU elastomer.

Understanding MJF and SLS Technologies:

MJF, developed by HP, is known for its precision and speed. It applies to fuse agents across a bed of powdered material, which is then fused by heating elements, creating high-density parts with excellent surface quality. SLS, on the other hand, uses a high-powered laser to sinter powdered material. While capable of creating complex geometries, its slower speed and rougher surface finish compared to MJF are notable drawbacks.

Key Advantages of MJF over SLS:

  • Speed and Efficiency: MJF’s process is inherently faster, making it ideal for high-volume manufacturing.
  • Superior Surface Finish and Density: MJF parts are denser with a smoother finish, reducing the need for post-processing.
  • Cost-Effectiveness: MJF is more economical, particularly in batch production, due to time savings in printing and post-processing.

Deep Dive into Material Benefits:

  • Nylon 12: MJF enhances the properties of Nylon 12, resulting in strong yet lightweight parts with consistent mechanical properties. In contrast, SLS Nylon 12 lacks the same isotropic mechanical properties and has a rougher detail and surface finish.
  • TPU Elastomer: MJF’s TPU parts are flexible, detailed, and complex, essential for industries where custom fit and comfort are crucial.
  • Polypropylene: MJF can effectively print polypropylene, a resilient plastic with exceptional chemical resistance and versatility, while SLS cannot.

Real-World Applications and Case Studies:

MJF’s capabilities have broad implications across industries. In the automotive sector, MJF is used for durable, heat-resistant components. In healthcare, customized prosthetics and orthopedic insoles made with MJF-printed TPU offer superior comfort and fit. Case studies reveal sports equipment manufacturers favoring MJF for its ability to produce strong, flexible, and lightweight gear.

Why Choose MJF for Your Business:

Choosing MJF means leveraging a technology that excels in efficiency, precision, and material versatility. It is particularly beneficial for high-volume batches or customized alighacham94 high-quality parts, offering a competitive edge in industries ranging from aerospace to consumer electronics.


MJF’s superior speed, efficiency, and material capabilities, especially with Nylon 12 and TPU elastomer, position it as a clear choice over SLS in the 3D printing landscape. Embracing MJF technology equates to embracing the future of manufacturing, leading to products that are not only of higher quality but also more cost-effective in the long run.


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