Abstract: The invention relates to a method, a device and a binding agent system for producing three-dimensional models.

Abstract: In the context of an extrusion deposition modeling to form three-dimensional objects, adhesion of extruded materials to a build surface is achieved by preparing the build surface using an intermediary coating that substantially adheres to the build surface, and a bondable particulate material, applied to the intermediary coating, that becomes affixed to the intermediary coating and provides a surface to which the extruded materials may attach.

Abstract: An assembly and method for creating a 3D structure. An improved compression of particulate construction material to be applied in layers, and as for increased speed in the forming of the individual layers is provided. A compressor element (2) has a blade with cutting edge arranged for compressing particulate construction material to be applied in layers. The cutting edge width is in a range between about 0.1 and about 3 times the diameter of a particle of the particulate construction material. The compression of construction material occurs with a compressor element (2) having a blade with a cutting edge and arranged in a compressor assembly (1). The width of the cutting edge is in a range between about 0.1 and about 3 times the diameter of a particle. The compressor element (2) is moved in a linear movement direction (12) by a drive element (3).

Abstract: The invention relates to an additive manufacturing apparatus which includes a platform guiding arrangement 10 having a build platform 12 and a mounting arrangement 14 comprising guiding elements 16, 18 mounted to the build platform 12. The mounting arrangement 14 is configured to permit displacement of the build platform 12 in a vertical or Z direction whilst permitting unconstrained thermal expansion and contraction of the build platform in the horizontal or X-Y plane. The guide elements 16, 18 abut against adjacent sides of the build platform 12 to inhibit angular displacement about a vertical axis and permit unconstrained thermal expansion and contraction in the X-Y plane.

Abstract: A three-dimensional modeling method comprises modeling a shell layer of a three-dimensional modeling object using a shell material, and modeling a core portion inside of the modeled shell layer using a core material. The modeling of the shell layer is performed by an additive manufacturing technology, and is divided into multiple steps in a lamination modeling direction of the three-dimensional modeling object. The modeling of the core portion includes filling the core material inside of the modeled shell layer subsequent to each modeling of the shell layer that has been divided into the multiple steps, and correctively curing the core material by irradiation with an active energy ray or by application of heat energy after the multiple steps of the modeling of the shell layer and the filing of the core material are all completed.

Abstract: In an example, a method of fusing a 3D object layer with a stationary energy system positioned and a carriage that casts a shadow onto the work area includes, with one pass of the carriage moving over the work area at a constant speed, dispensing a liquid fusing agent onto a first layer of build material in a pattern corresponding to an object slice such that the exposure time of the patterned build material is unequal across the first layer and, with another pass of the carriage moving over the work area in the same direction and at the same constant speed as the first pass, spreading the next layer of build material over the first layer such that the exposure time of the patterned build material in the first layer is made equal across the first layer.