Patent ID: 8815345
Filing Date: 2014-08-26
Classification: B29C,B33Y

Abstract:
1. A method of fabricating a three dimensional model from a composite model formed by a plurality of layers with the composite model comprising at least one shell material encasing and enclosing a build material, the method comprising the steps of: (1) for each build layer, depositing a build layer of the build material onto a preceding layer; (2) mechanically removing a selected area of the build material from the deposited build layer by a mechanical process; (3) filling only the selected area of the removed build material with the shell material; and (4) reducing a thickness of the build layer to a desired final thickness to complete formation of the build layer for supporting a next subsequent build layer; and (5) repeatedly repeating steps (1) through (4) for each subsequent build layer until fabrication of the composite model is completed.