An apparatus for making a three-dimensional object includes a powdery layer-forming unit for forming a powdery layer on a table and an optical beam-irradiating unit for irradiating an optical beam on a predetermined region of the powdery layer to sinter the predetermined region. The optical beam-irradiating...http://www.google.com.au/patents/US20060192322?utm_source=gb-gplus-sharePatent US20060192322 - Three dimensional structure producing device and producing method