We Can Now 3D Print in Suspended Gravity (And It’s Mesmerizing!) – https://youtu.be/FgCedvTbKso
Volumetric additive manufacturing via tomographic reconstruction
“The speed, geometry, and surface quality limitations of additive processes are linked to the reliance on material layering. We demonstrated concurrent printing of all points within a three-dimensional object by illuminating a rotating volume of photosensitive material with a dynamically evolving light pattern. We print features as small as 0.3 mm in engineering acrylate polymers, as well as printing soft structures with exceptionally smooth surfaces into a gelatin methacrylate hydrogel”
One-step volumetric additive manufacturing of complex polymer structures
“Two limitations of additive manufacturing methods that arise from layer-based fabrication are slow speed and geometric constraints (which include poor surface quality). Both limitations are overcome in the work reported here, introducing a new volumetric additive fabrication paradigm that produces photopolymer structures with complex nonperiodic three-dimensional geometries on a time scale of seconds.”
What is volumetric 3D printing and why it could mean the end of additive layer manufacturing
“Powder bed fusion would be excluded for now mainly because it would likely require way too much energy to be able to control it. Even if researchers were able to develop a volumetric powder bed fusion process for polymers (perhaps an evolution of EOS’s LaserProFusion), it would still take many years before even beginning to consider applying it to metals (although EOS’ CEO Adrian Keppler did tell us it would theoretically be possible at formnext)”
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