3D Printer HardwarePost-Processing

Wematter unveils Gravity 2022 SLS printer & Density post-processing station

New printer uses less power than predecessor, while both new machines boost throughput

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Swedish 3D printing company Wematter has launched two new products. The Gravity 2022 SLS 3D printer is robust and can withstand extreme hot and cold working environments. Meanwhile the Density post-processing station uses water blasting and compressed air processing to clean parts, even in office environments. Both machines build upon 2021 models and offer new features.

First up is the Gravity 2022, a selective laser sintering machine that builds on the Gravity 2021.  According to Wematter, the Gravity 2022 is more robust than the 2021 model, offering increased repeatability and serviceability. The Gravity 2022 can also withstand extreme temperatures — guarding itself against climate change — as well as fire and electrostatic discharges.

Gravity 2022
Loading powder into the Gravity 2022 printer

The Gravity 2022 comes with new features too. Firstly, it can read powder packages using QR codes to avoid factory floor mix-ups. Furthermore, the new printer has a laser system for printing white, grey, or black materials from different material groups. (The Gravity 2021 can use nine different materials, with more in development. It accommodates PA12, PA11, ESD, PP, and TPU, plus high-temp technical materials.) Other new features include a revamped cooling system, new pneumatic systems, and a more energy-efficient laser projection system.

Wematter has also tweaked elements of the Gravity 2022 for higher production throughput. “Wematter has eliminated one of the mandatory inspection steps between each SLS build job start,” said Robert Kniola, Wematter founder and CEO. “We have also introduced lighting in the chamber to simplify powder removal and taking out the 3D models.”

Versatile post-processing solution

In addition to the Gravity 2022, Wematter has launched a new version of the Density post-processing station. The Density system uses water blasting and compressed air processing to clean SLS parts. It can operate in office, lab, and production environments. Furthermore, Wematter says it can be used on Polyjet, SLA, and FDM parts as well as SLS.

Gravity 2022
The Density 2022 post-processing station

Improving upon last year’s Density model, the Density 2022 has several new features. These include a new nozzle with variable water jet. Users can select a wide jet for rapid powder removal from large areas, or a concentrated jet for focused washing. (Targeting cavities and narrow passages, for example.)

Other new features include a water level indicator, more ergonomic handles, and a new wiper motor for better visibility. As with previous models, the Density station recirculates water and does not need a water supply or drain access.

Another important update to the Density 2022 is its quieter operation. “This goal has required a total redesign that not only lowered the noise level to a whole new level, it also enabled design changes for better manufacturability,” Kniola explained, adding that the machine’s suitability for office use — along with improved security features — will enable more users, industrial and non-industrial, to adopt the technology.

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Benedict O'Neill

Benedict is a freelance writer with several years of experience in the additive manufacturing industry, having served as co-editor of a leading 3D printing news website. He also produces content for sports and culture platforms and holds a master’s degree in English literature.

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