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Open source technology makes 3D printing possible in seconds

By Sponsored 

3druck.com

August 12, 2023

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For years we have been reporting continuously on volumetric 3D printing. Unlike most processes that create objects layer by layer, volumetric 3D printing allows an object to be manufactured in a single step.

Several research institutions as well as companies deal with this method. So did a research group at the University of California Berkeley. As part of the OpenCAL project , the team is developing and researching volumetric 3D printing. They call the method "Computed Axial Lithography" and make their technology available under open licenses.

Taylor Waddell, a PhD student on the team, shared insights into the technology in a recent interview. He explained that the process is based on three main components: the material , the rotation and the projector. The material used is sensitive to light and must have a certain viscosity in order to serve as a support structure. The rotation and the projector are responsible for the imaging. An interesting aspect of this technology is its similarity to the tomographic imaging used in medical CT scans. Waddell describes the process as a "reverse order CT scan."

With computed axial lithography, 3D printing can be realized in a few seconds. While Waddell only presented smaller objects in the interview, he emphasized that an enlargement to several meters is quite feasible. Although the production time increases for larger objects, it remains significantly shorter at less than 3 minutes compared to conventional 3D printing processes .

The UC Berkeley team is also investigating applications in microgravity, since even lower viscosity materials can then be used. Tests of the technology are planned on the International Space Station over the next two years.

3D Printing in ZERO G!

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