Patent ID: 8245757

Claim:
A method for building a three-dimensional model with a digital manufacturing system, the method comprising: heating a build chamber of the digital manufacturing system to maintain one or more temperatures of at least about 200° C.; melting a support material in an extrusion head of the digital manufacturing system to an extrudable state, wherein the support material comprises a non-eutectic blend of a first inorganic alkali-metal salt and a second inorganic alkali-metal salt; extruding the molten support material from the extrusion head; depositing the extruded support material into the heated build chamber using a first layer-based additive technique to form a support structure; and depositing a modeling material into the heated build chamber using a second layer-based additive technique to form the three-dimensional model, wherein the three-dimensional model comprises at least one overhanging region supported by the support structure.