Abstract: Methods and apparatus for the fabrication of solid three-dimensional objects from liquid polymerizable materials at high resolution. A material is coated on a film non-digitally, excess material is removed digitally, by laser, leaving an image of a layer to be printed, and the image is then engaged with existing portions of an object being fabricated and exposed to a non-digital UV curing light source. Since the only part of the process that is digital is the material removal, and this part is done by laser, the speed of printing and the robustness of the manufacturing process is improved significantly over conventional additive or 3D fabrication techniques.

Abstract: A DLP 3D printer, using a DLP projector to generate two images successively, and using a set of mirrors to deflect the irradiation of the two images through two routs respectively to form a complete image on the curing surface of the solidifiable material. In this manner, the printing area is enlarged without increasing the resolution of the DLP projector.

Abstract: A prosthesis, radiation bolus, pre-surgical model, or burn mask formed using a rapid prototyping device, such as a three-dimensional printer. In some exemplary aspects, the prosthesis includes a scaffolding and a coating at least partially covering the scaffolding. Methods and systems for forming the prosthesis, radiation bolus, pre-surgical model, or burn mask are also provided.

Abstract: A photo-curable resin is cured in a tank through exposure to radiation when fabricating an object, and the photo-curable resin in the tank is periodically replaced, e.g., according to its temperature, while printing operations are paused, or recirculated during printing.

Abstract: An apparatus for additive manufacturing includes a platform comprising a fixing device for fixing a component to the platform, wherein the platform is configured to vary an orientation of the component over an angle of at least 360° according to at least one spatial direction, and an actuation device for mechanically actuating the platform at a predefined frequency.

Abstract: A shaping apparatus that shapes a composition on a substrate by using a mold, includes a substrate positioning mechanism for positioning the substrate, a mold positioning mechanism for positioning the mold, a dispenser for arranging the composition on a shot region of the substrate, and a gas supply for supplying a gas onto the substrate from a gas supply port in a state in which the substrate is driven by the substrate positioning mechanism. A flow rate of the gas supplied onto the substrate by the gas supply starts to decrease in a period during which the substrate is driven by the substrate positioning mechanism so that the shot region where the composition is arranged by the dispenser is moved under the mold.

Abstract: A method of processing a surface in additive manufacturing includes assembling a structure for a component by additive manufacturing out of a bed of a powdery base material, such that the structure is provided with an internal surface and a powdery base material covers at least a part of the internal surface, and actuating the base material relatively to the structure such that the internal surface is mechanically processed by the base material.

Abstract: The invention relates to a method of manufacturing a plastic frame for a two-wheeler having at least one hollow space in the interior by means of plastic injection molding having a series of method steps, wherein a fluid is injected to displace the plastic core from the component cavity after the injection of a preferably thermoplastic plastic melt into a closed injection molding tool.

Abstract: A method of making an object on a bottom-up stereolithography apparatus is provided. The apparatus includes a light source (11), a drive assembly (14), and a controller (15) operatively associated with the light source and the drive assembly, with the light source and/or the drive assembly having at least one adjustable parameter that is adjustable by the controller. The method includes installing a removable window cassette (12) on the apparatus in a configuration through which the light source projects, the window cassette comprising an optically transparent member, provided as a window (12a), having a build surface on which an object can be produced, and with the optically transparent member having and at least one variable property therein; and then modifying the at least one adjustable parameter by the controller based on the at least one variable optical property of the window; and then producing the object on the build surface from a light-polymerizable liquid by bottom-up stereolithography.

Abstract: Non-time dependent measured variables are used to effectively determine an optimal ejection time of a part from a mold cavity. A system and/or approach may first measure at least one non-time dependent variable during an injection molding cycle. The part is ready to be ejected from the mold upon the measured variable reaching a threshold value indicative of, for example, a part temperature dropping below an activation temperature.

Abstract: A system and method of constructing a 4D-printed ceramic object, the method including extruding inks including particles and polymeric patterns through a nozzle to deposit the inks to form a first elastic structure, subjecting the first elastic structure to tensile stress along at least one axis, extruding inks including particles and polymeric patterns through a nozzle to deposit the inks to form a second elastic structure provided to the first elastic structure under tensile stress, releasing the application of tensile stress from the first elastic structure to allow the first elastic structure and second elastic structure to form a 4D-printed elastomeric object, and converting the 4D-printed elastomeric object into the 4D-printed ceramic object.

Abstract: A method for automatic printing of a three dimensional heterogeneous structure in accordance with a computer-aided design procedure, including the steps of: aspirating a first portion consisting of a first material (M1) in liquid form, from a first liquid container into a capillary (C); aspirating a second portion consisting of a second material (M2) in liquid form different than the first material (M1), from a second liquid container into said capillary (C), such that the first portion and the second portion constitute longitudinally different parts of a longitudinally heterogeneous filament (F) encompassed by the capillary (C); and extraction of the filament (F) from the capillary (C) thus laying it as a portion of a printed layer.

Abstract: The present disclosure relates to a print bed (1) for regulating a temperature of the print bed (1). The print bed (1) comprises at least one Peltier element (2), each Peltier element having opposite first and a second surfaces (3a, 3b). The print bed (1) further comprises at least one heatsink (4). The at least one Peltier element (2) is arranged to have each respective first surface (3a) facing a print surface (5) of the print bed (1). The at least one heatsink (4) is thermally connected to the Peltier element (2) and arranged to transfer heat generated by the at least one Peltier element (2) and dissipate the transferred heat away from the at least one Peltier element (2). The present disclosure further relates to corresponding 3D-printers, methods, computer programs and modules.

Abstract: According to a first aspect of the present disclosure, there is provided an additive manufacturing method. In the method, regions of successively-deposited layers of granular construction material are bound together so as to form a three-dimensional structure of bound material extending through and between the layers. The method comprises depositing a first granular construction material as a layer into a build region. The method comprises selectively binding regions of the first granular construction material together to form bound regions within the layer. The method comprises removing unbound granular construction material from the layer so as to provide at least one void in the layer. The method comprises depositing a second granular construction material into the build region so as to fill the at least one void. The method comprises selectively binding regions of the second granular construction material together to form bound regions within the layer.

Abstract: Non-time dependent calculated variables based on measured strain are used to effectively determine an optimal hold profile for an expanding crosslinking polymer part in a mold cavity. A system and/or approach may first inject molten expanding crosslinking polymer into a mold cavity, then measure strain at the mold cavity or at another location within the injection molding system, and then calculate at least one non-time dependent variable during an injection molding cycle. Next, the system and/or method commences a hold profile for the part, and upon completing the hold profile, the part is ejected from the mold cavity, whereupon a cure profile is commenced.

Abstract: A three dimensional printing system includes a print engine, a storage system, and a controller. The controller is configured to (1) receive a build order defining a plurality of three dimensional articles to be manufactured, (2) allocate partitions for receiving the plurality of the three dimensional articles within the storage system, (3) operate the print engine to fabricate the three dimensional articles, and (4) transfer the three dimensional articles to the partitions as they are built.

Abstract: The invention relates to an injection-molding device for producing multi-component moldings from a thermoplastic molding compound, comprising a mold, forming a first article cavity, comprising means for filling the first article cavity with the thermoplastic molding compound, comprising an injection device for injecting a fluid against a projectile to be driven, wherein the injection device comprises a projectile carrier with at least one injection nozzle and with at least one projectile receptacle for a projectile as a displacer for the molding compound.

Abstract: Systems and method of constructing a 4D-printed ceramic object, the method including extruding inks including particles and polymeric ceramic precursors through a nozzle to deposit the inks to form a first elastic structure and a second elastic structure, subjecting the first elastic structure to a tensile stress along at least one axis, attaching the second elastic structure to the first elastic structure, releasing the application of the tensile stress from the first elastic structure to allow the first elastic structure and second elastic structure to form a 4D-printed elastomeric object, and converting the 4D-printed elastomeric object into the 4D-printed ceramic object.

Abstract: The present invention concerns an apparatus for making a three-dimensionally curved object, said apparatus comprising a membrane having a moulding surface, which is configurable into a predetermined shape by individually adjusting an array of actuators acting on the surface opposite the moulding surface of said membrane, wherein the membrane is a ferromagnetic membrane and the actuators are provided with magnetic joints at the distal ends of said actuators.

Abstract: A method and an apparatus form aluminium screw capsules with a safety ring made of synthetic plastics for tamperproof closing of containers. An aluminium capsule body is inserted into a moulding cavity of a mould conformed and arranged for the overmoulding of a safety ring on an edge of an annular wall of the capsule body. An annular sealing zone is defined for the synthetic plastic material between a first surface of the capsule body and a mould first portion inserted into the central cavity of the capsule body to form a safety ring anchored to the capsule body.