Researchers invert laser for improved, multi-material SLS 3D printing

Written by Georgi Makin

inverted laser SLS 3D printing
CREDIT: John Whitehead/Columbia Engineering

A team of researchers from Columbia University School of Engineering and Applied Science (NY, USA) has invented a novel selective laser sintering (SLS) 3D printing technique, inverting the laser to transmit upwards through glass. A popular technique for 3D printing in many different industries, the process of SLS includes the controlled use of a laser to heat a powder, causing the particles in the powder to fuse together and form a solid. However, as Hod Lipson, James and Sally Scapa Professor of Innovation (Mechanical Engineering) at Columbia University School of Engineering and Applied Science explained: “Additive manufacturing is key to...

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