Patent ID: 8202464

Claim:
A method for layerwise production of a tangible object, the method comprising: providing a liquid reservoir containing a liquid; providing a construction shape; and repeatedly performing method cycles, each method cycle comprising the successive steps of: solidifying a predetermined area of a layer of the liquid, said liquid layer adjoining the construction shape, so as to obtain a solid layer of the tangible object, the solid layer thus having a predetermined shape; separating said solid layer from said construction shape; and moving, relative to one another, the separated solid layer and the construction shape to a predetermined position relative to one another for letting the liquid flow-in between the separated solid layer and the construction shape so as to obtain a similar liquid layer adjoining the construction shape, the obtained similar liquid layer containing the flown-in liquid and to be used in a successive such method cycle for similar solidifying a predetermined area thereof so as to obtain a successive such solid layer adhered to the solid layer; wherein reduced pressure is applied relative to the atmospheric environment at least temporarily when performing of at least one of the method cycles to at least one fluid, such as the liquid in the liquid reservoir, the at least one fluid contacting layers of the object under production that were solidified in method cycles that were performed previously to the at least one such method cycle, and wherein, at least after a part of said separating step of the at least one of the method cycles, said reduced pressure is at least temporarily increased for stimulating the liquid to flow-in between the at least partly separated solid layer and the construction shape.