Industrial Polymer 3D Printing Review: An extensive comparison of voxeljet HSS, HP MJF, and SLS

The market for polymer 3D printing is rapidly growing, with reports that polymer powder consumption grew by 43.3% throughout 2021, overtaking photopolymer resins as the most used 3D printing material. As such, competition between industrial 3D printer OEMs is fiercer than ever, giving manufacturing firms ample choice with technologies such as High Speed Sintering (HSS), Multi Jet Fusion (MJF), and Selective Laser Sintering (SLS).

Since all processes feature similar properties and surface finishes, it’s not uncommon for these polymer printing technologies to be seen as competitors. In this special edition review, we’ll run through the ins and outs of these three technologies and see how they differ from one another.

By contrast, MJF 3D printers are able to process PA12, PA11, and PP. Both technologies allow for unprinted powder materials to be recycled and reprocessed.



The torture cube is a dynamic print test with a plethora of moving components, meaning it provides a great way to determine the differences in surface quality between the three technologies. In this case, we looked at how easy the assembly process was for each of the cubes, the overall fluidity of the cubes’ movements, and the detail resolution between the three technologies.

When it came time to assemble the HSS torture cube, the first six faces clipped in without much force at all. The corner pieces, which required sliding rather than clipping, were a little more difficult to slot into place due to friction, with some of them calling for the use of a screwdriver.

Looking closer at some of the more intricate cube elements, we noticed that the HSS parts were the cleanest in terms of residual powder. In fact, we couldn’t find any loose powder in the cavities of the lattice geometries, so no additional post-processing was necessary.

Due to the presence of small volumes of residual Nylon powder in the lattice structures, we had to conduct some minor additional post-processing on the SLS build. This involved blowing out the cavities and manually shaking out the cube elements before assembly.

Much like the SLS cubes, we found small volumes of residual powder in the individual elements. Again, we had to perform some additional depowdering before assembling the MJF build, specifically by blowing out the cavities and manually shaking out the cubes.



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