Patent 8349239 was granted and assigned to Stratasys on January, 2013 by the United States Patent and Trademark Office.
A three-dimensional model built with an extrusion-based digital manufacturing system, and having a perimeter based on a contour tool path that defines an interior region of a layer of the three-dimensional model, where at least one of a start point and a stop point of the contour tool path is located within the interior region of the layer.