At the core of our 3D printer is a low-cost high-output laser module. Using a finely tuned set of optical lenses we are able to focus the beam into a tight, energy-dense point with enough energy to liquefy metal. The key to effective printing in metal is controlling the intensity and movement of this point. Our printer wields a powerful and economic solid state laser emitter, which is tuned to provide just the right dose of power with each pulse.