A method and apparatus for forming a three-dimensional object by thermal spraying utilizes a plurality of masks positioned and removed over a work surface in accordance with a predetermined sequence. The masks correspond to cross sections normal to a centerline through the workpiece. One set of masks...http://www.google.com.au/patents/US5126529?utm_source=gb-gplus-sharePatent US5126529 - Method and apparatus for fabrication of three-dimensional articles by thermal spray deposition
