To create your 3D print, a laser in the printer melts the powder together. So here’s how it works:
A super-thin layer of Aluminum or Titanium powder is spread out by a roller. The print chamber of the 3D printer is then heated up. However, the powder does not melt yet since it has not reached its melting point. And now the magic happens, a laser touches those areas of the layer that are part of your design, raising the temperature of those areas just above the melting point, and voilà, the part is sintered (well, one layer of your part). The 3D printer will continue to spread out one layer of powder after another, and the laser will systematically touch the correct spots of each layer and sinter the object together.</p.