Markus Kayser has taken the design and AM (additive manufacturing) world by storm with his amazing video demonstration of SSSS (selective solar sand sintering). The video credits reveal his connection with Royal College of Art!
Basically, Kayser has focussed the sun on a bed of sand to harness its energy to fuse/sinter the sand in a manner similar to selective laser sintering or electron-beam sintering . Nicely done!
“In the deserts of the world two elements dominate – sun and sand. The former offers a vast energy source of huge potential, the latter an almost unlimited supply of silica in the form of quartz. The experience of working in the desert with the Sun-Cutter led me directly to the idea of a new machine that could bring together these two elements. Silicia sand when heated to melting point and allowed to cool solidifies as glass. This process of converting a powdery substance via a heating process into a solid form is known as sintering and has in recent years become a central process in design prototyping known as 3D printing or SLS (selective laser sintering). These 3D printers use laser technology to create very precise 3D objects from a variety of powdered plastics, resins and metals – the objects being the exact physical counterparts of the computer-drawn 3D designs inputted by the designer. By using the sun’s rays instead of a laser and sand instead of resins, I had the basis of an entirely new solar-powered machine and production process for making glass objects that taps into the abundant supplies of sun and sand to be found in the deserts of the world.”
We like AM powder systems as they seem to be one of the only systems that one would deploy in many parts of the world that would employ locally available materials (in this case sand). Congratulations on a great demonstration!