Multi Jet Fusion, or MJF, and Selective Laser Sintering, or SLS, both utilize Nylon material. Here's an overview of the difference between each in terms of resulting functional properties to help you make the right choice.

MJF machines deposit a detailing agent along the exterior of a part that, after media blasting results in a less coarse surface finish compared with the SLS process. MJF parts also come off the bed grey, whereas SLS Nylon parts are white. Both can be dyed black afterwards. MJF has a slightly better resolution compared with SLS, with a layer height at for SLS.

If you’re prototyping smaller quantities under around 100 units, SLS is generally more cost effective. At higher bridge production quantities, MJF becomes more cost effective because of the machine’s modular design and faster production speed.

As for mechanical properties, MJF Nylon has a higher flexural strength than SLS Nylon. Therefore, MJF Nylon is typically considered more often for end-use parts and functional testing under higher loads.

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