The present disclosure describes a 3D printer comprising a core exchanger mechanism to store filament cores, a hotend, an actuation arm and a cutting mechanism to sever the filament. The cores are swappable by the core exchanger mechanism to provide a variety of filament to the 3D printed object during printing. A coreless hotend for use with a 3D printer is also provided, comprised of a receptacle to receive and store cores of the 3D printer during 3D printing. The coreless hotend is also comprised of a locking mechanism to lock and release the cores from the receptacle to replace the core with another core.

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).

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).

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.

Examples of the present disclosure relate to a build material container for a three-dimensional printing system. The container has an external casing with an upper surface, a lower compartment to receive a build material reservoir, at least one load-bearing element, and an upper compartment below the upper surface. The upper compartment and the lower compartment are separated by a lower surface. The at least one load-bearing element is arranged below the lower surface. The upper compartment has stiffening members arranged to distribute load received from the upper surface to the at least one load-bearing element.

Examples of the present disclosure relate to a build material container for a three-dimensional printing system. The container has an external casing with an upper surface, a lower compartment to receive a build material reservoir, at least one load-bearing element, and an upper compartment below the upper surface. The upper compartment and the lower compartment are separated by a lower surface. The at least one load-bearing element is arranged below the lower surface. The upper compartment has stiffening members arranged to distribute load received from the upper surface to the at least one load-bearing element.

A fiber laying machine for producing laid fiber scrims has a tool table for positioning a mold, said tool table being linearly displaceable in an x direction by means of an x carriage and being pivotable about a vertical pivot axis. Arranged above the tool table is a fiber laying head which is linearly displaceable transversely to the x direction by means of a y carriage. Since the fiber laying head is linearly displaceable, the arrangement of the tool table on the machine frame is comparatively easy, and so laid fiber scrims are producible quickly and efficiently. In particular, automatic loading and unloading of the tool table is easily possible.