A multidimensional printer makes a multidimensional structure from a liquid composition and includes: an energetic crosslinking particle source; a vacuum chamber that receives energetic crosslinking particles from the energetic crosslinking particle source; a membrane that transmits the energetic crosslinking particles; and a sample chamber that: receives a liquid composition that includes a solvent and polymers, the polymers including a cross-linkable moiety subjected to the energetic crosslinking particles such that portions of the polymers proximate to the cross-linkable moieties subjected to the energetic crosslinking particles crosslink to form a solid crosslinked polymer structure, wherein the membrane isolates a vacuum of the vacuum chamber from vapor of the liquid composition in the sample chamber.

A 3D printing apparatus and a 3D printing method are provided. The 3D printing apparatus includes a frame, and a working area is formed in the frame; a powder spreading device, a printing device, and a moving device are disposed in the working area; the powder spreading device and the printing device are simultaneously driven by the moving device to move in a staggered manner along different moving paths, wherein a powder spreading of the powder spreading device and a printing of the printing device are achieved at a same time. A technical problem in the prior art that a printing efficiency of the 3D printing apparatus is greatly limited resulting from that because powder spreading and printing are completed successively at different steps, time needs to be spent on waiting and a long period is spent on printing after powder spreading on each layer is solved.

Build material handling unit (2) for a powder module (3) for an apparatus for additively manufacturing three-dimensional objects, which apparatus is adapted to successively layerwise selectively irradiate and consolidate layers of a build material (4) which can be consolidated by means of an energy source, wherein the build material handling unit (2) is coupled or can be coupled with a powder module (3), wherein the build material handling unit (2) is adapted to level and/or compact a volume of build material (4) arranged inside a powder chamber (5) of the powder module (3) by controlling the gas pressure inside the powder chamber (5).

In an example, a method includes receiving object model data representing at least a portion of an object that is to be generated by an additive manufacturing apparatus by fusing build material within a fabrication chamber. At least one of a number of different geometrical compensation models to be applied to the object model data may be selected, where the geometrical compensation models are to determine geometrical compensations to compensate for object deformation in additive manufacturing. An object generation operation based on a modification of the object model data using the or each selected geometrical compensation mode may be simulated and predicted attributes of the object when generated based on the or each simulation may be displayed.

In an example, a method includes receiving object model data representing at least a portion of an object that is to be generated by an additive manufacturing apparatus by fusing build material within a fabrication chamber. At least one of a number of different geometrical compensation models to be applied to the object model data may be selected, where the geometrical compensation models are to determine geometrical compensations to compensate for object deformation in additive manufacturing. An object generation operation based on a modification of the object model data using the or each selected geometrical compensation mode may be simulated and predicted attributes of the object when generated based on the or each simulation may be displayed.

An additive manufacturing (AM) system manufactures composite structures having different materials in an integrated manner during a single processing process. For example, a first composite image is created on a substrate and then that image is stabilized by heat, pressure of chemical fusion not to the point of complete solid formation but enough to give the first composite image enough stability so that it is not disturbed by subsequent processing. A second image is then created on parts of the substrate not covered by the first composite image, a second powder is applied, and excess second powder that is not part of the second image is removed. The substrate may be cut into sheets that are stacked in register for consolidation and subsequent matrix removal resulting in a multi-polymer 3D object.

An additive manufacturing (AM) system manufactures composite structures having different materials in an integrated manner during a single processing process. For example, a first composite image is created on a substrate and then that image is stabilized by heat, pressure of chemical fusion not to the point of complete solid formation but enough to give the first composite image enough stability so that it is not disturbed by subsequent processing. A second image is then created on parts of the substrate not covered by the first composite image, a second powder is applied, and excess second powder that is not part of the second image is removed. The substrate may be cut into sheets that are stacked in register for consolidation and subsequent matrix removal resulting in a multi-polymer 3D object.

A system and method of additively manufacturing a part including electrically conductive or static dissipating fluorine-containing polymers. The method includes depositing fluorine-containing polymer additive manufacturing material onto a build platform, selectively cross-linking portions of the deposited additive manufacturing material, and curing the selectively cross-linked portions such that the part is at least one of electrically conductive and static dissipating.

A system and method of additively manufacturing a part including electrically conductive or static dissipating fluorine-containing polymers. The method includes depositing fluorine-containing polymer additive manufacturing material onto a build platform, selectively cross-linking portions of the deposited additive manufacturing material, and curing the selectively cross-linked portions such that the part is at least one of electrically conductive and static dissipating.

A three-dimensional printer is described, wherein the three-dimensional printer comprises a build unit and a material removal unit. The build unit is configured to generate a three dimensional object. The material removal unit comprises a housing, a plurality of gas inlets and outlets, a plurality of valves and a control unit. The housing is sealed to the build unit and is configured to house a cake comprising the generated three dimensional object. The valves are configured to open and close the inlets and outlets, and the control unit is configured to control the valves, to allow gas to flow from different inlets to different outlets in different flow paths, in order remove powder from the object.