Patent ID: 8636850
Filing Date: 2014-01-28
Classification: B08B,B29C,B33Y

Abstract:
1. A method for removing support material from objects made by solid freeform fabrication, the method comprising: inserting two or more objects made by solid freeform fabrication into a cell having an inlet to receive a high-pressure liquid jet located at a top side of the cell and a plurality of draining perforations at the circumferential wall of the cell; streaming a liquid jet into the cell through the inlet from above liquid level while a portion of liquid contained in the cell being removed through the draining perforations; and adjusting the pressure of the liquid jet to maintain a desired liquid level above at least a portion of the draining perforations such that the cell is kept partially filled with liquid, wherein the liquid jet is directed onto the surface of the liquid to enable direct contact between the liquid jet and two or more objects, random movement of the two or more objects and collisions with the circumferential wall and with one another to remove support material from the two or more objects.