Abstract: An apparatus includes a transparent chamber having a space therein for containing an object while heating under vacuum, at least one directed energy source configured to direct energy to heat the object positioned within the space of the transparent chamber, a cap on the transparent chamber, and a connection between the transparent chamber and at least one vacuum for creating a vacuum within the transparent chamber. The apparatus may further include at least one temperature sensor to measure temperature of the object. The apparatus may further include a control system, the control system operatively connected to the at least one temperature sensor and the at least one directed energy source and wherein the control system is a closed loop system to adjust laser power to provide more or less energy to heat or maintain the temperature of the object.

Abstract: A method for post-processing part obtained by additive manufacturing through sintering of a plastic powder, in order to remove particles detached from the part or partially sintered, the method including, consecutively, stripping (S1) and ionizing blowing (S2). Such a method makes it possible to remove particles having a largest dimension greater than a given dimension. The invention also relates to a corresponding manufacturing method of a plastic material part, and to a corresponding production method.

Abstract: A forging head for additive manufacturing, comprising a base portion and a forging portion. The forging portion extends from the base portion for forging a cladding layer during formation of the cladding layer by additive manufacturing. The forging head further comprising a through hole which is formed through the base portion and the forging portion, for at least one of an energy bean and an additive material to pass through during formation of the cladding layer.

Abstract: A manufacturing system includes a printer chamber having a printer bed that supports manufacturing materials and an internal heating system supported by the printer chamber. The internal heating systems is configured to direct patterned heat energy onto the printer bed and supported manufacturing materials. An external heating system is supported by or positioned near the printer chamber and configured to direct patterned heat energy onto the printer bed and any supported manufacturing materials.

Abstract: The present invention relates to a sinter powder (SP) comprising a first polyamide component (PA1) and a second polyamide component (PA2), where the melting point of the second polyamide component (PA2) is higher than the melting point of the first polyamide component (PA1). The present invention further relates to a method of producing a shaped body by sintering the sinter powder (SP) or by an FFF (fused filament fabrication) method, and to a shaped body obtainable by the methods of the invention. The present invention further relates to a method of producing the sinter powder (SP).

Abstract: A method is disclosed for 3D printing of soft polymeric material such as a hydrogel or elastomer for scaffolds or devices with embedded channels with tunable shape and size such as a channel inner diameter). The method utilizes extrusion based printing of polymer solutions usually referred as direct ink writing (DIW) or BioPlotting, and requires sequential printing of a photocurable polymer solution, herein, referred as the matrix material, and a sacrificial polymer solution that may dissolve in an aqueous media.

Abstract: Devices, systems, and methods for selectively sintering a powder layer in additive manufacturing processes to achieve a desired heat conductivity are disclosed. A method includes distributing a powder layer in a build chamber, selectively sintering the powder layer to form a plurality of sintered areas and a plurality of non-sintered areas based on a thermal model, and melting a subset of the plurality of sintered areas.

Abstract: A three-dimensional printing system including at least one positioning mechanism, and at least one end effector movably connected to the at least one positioning mechanism. The at least one end effector includes at least one mixing head configured to dispense a material, and at least one subtractive tool configured to subtract at least a portion of the material such that a desired design is achieved.

Abstract: An apparatus (1) for the additive manufacturing of at least one three-dimensional object (2) by selectively compacting layer by layer at least one compactible building material (3) by means of at least one energy beam (5) generated by at least one radiation generating device (4), comprising at least one radiation generating device (4) for generating at least one energy beam (5) for compacting at least one compactible building material (3), at least one coating device (8) for carrying out at least one coating operation to apply a defined building material layer (9) of at least one compactible building material (3) to a building plane (10) or to a building material layer (9) of at least one compactible building material (3) that has previously been applied in the course of carrying out a previous coating operation, and also at least one recording device (11) for recording layer information describing.

Abstract: A powder bed fusion apparatus according to an embodiment includes: a fabrication container that is provided between first and second storage containers which heat a powder material stored therein to first and second predetermined temperatures, respectively, and that heats the powder material stored therein to a third predetermined temperature higher than the first and second predetermined temperatures, and lets the powder material be irradiated with a laser beam from a laser beam emission unit based on a model to be fabricated; and an evaluation unit that, when the powder material in the first storage container is carried into the fabrication container, evaluates the carrying based on a comparison between a threshold value and a change in the temperature of the powder material stored in the second storage container calculated based on the temperature detected by a temperature measurement device.

Abstract: A fabricating apparatus includes a powder layer forming device, a fabrication liquid discharge device, and processing circuitry. The powder layer forming device is configured to form a powder layer. The fabrication liquid discharge device is configured to discharge fabrication liquid onto the powder layer. The processing circuitry is configured to control the fabrication liquid discharge device to discharge the fabrication liquid with a first kinetic energy and then discharge the fabrication liquid with a second kinetic energy higher than the first kinetic energy.

Abstract: A material deposition head includes a body portion and at least one nozzle. The body portion includes a first end, a second end, and a first exterior surface extending from the first end to the second end. The at least one nozzle is coupled to the body portion at or near the second end. The nozzle defines a second exterior surface and a material delivery channel that is fluidically coupled to a fluidized powder source configured to provide a plurality of particles of a material. At least one of the first exterior surface or the second exterior surface includes a microtextured surface configured to reduce a wettability of molten particles of the plurality of particles thereon.

Abstract: A method of three-dimensional (3D) printing includes applying a solution to a channel. The solution includes a plurality of anisotropic particles suspending in the solution. Acoustic waves are applied to the channel. The frequency of the acoustic waves is configured to organize the plurality of anisotropic particles into one or more columns of organized anisotropic particles. The channel is connected to a printhead and a waste outlet. The solution comprising the one or more columns of organized anisotropic particles is deposited on a substrate via the printhead outlet.

Abstract: The present invention relates to a method for producing a molded body by the selective laser sintering of a sinter powder (SP). The sinter powder (SP) contains at least one polyamide (P) and 5 to 50 wt %, preferably 10 to 50 wt %, of at least one aluminum silicate. The at least one aluminum silicate has a D50 value in the range of 2.5 to 4.5 ?m. The present invention also relates to molded bodies obtainable by means of the method according to the invention.

Abstract: The present disclosure generally relates to additive manufacturing systems and methods involving a mechanism for feeding in a desired amount of fresh recoater blade. This can be accomplished by, for example, spooling the fresh blade material from a spool. This helps prevent work stoppage when a portion of a recoater blade becomes damaged. As such, the present disclosure also relates to a system and method for detecting whether a recoater blade is damaged, and if there is damage, then causing a fresh blade portion to be fed in.

Abstract: A method and apparatus for forming extruded shapes having at least a hollow portion using a hydrodynamic nozzle, a curable fluid, and a core fluid.

Abstract: A three-dimensional printing system includes a build vessel, a plate, a vertical movement mechanism coupled to the plate, a powder coater, an energy source, and a controller. The build vessel includes one or a plurality of vertical chamber walls. The vertical chamber wall(s) laterally enclose a build chamber and have inward facing surfaces that collectively define a lateral extent or width of the build chamber. The build vessel includes a lip that defines an upper surface of the build vessel. The lip extends inwardly from the inward facing surfaces to define an opening having a lateral extent that is smaller than the lateral extent of the build chamber. The plate has an upper surface and a lateral extent that is larger than the lateral extent of the opening. The plate laterally overlaps with the lip.

Abstract: A method for producing a three-dimensional shaped article includes shaping a first portion constituting at least a part of the three-dimensional shaped article by ejecting a molten material according to shaping data generated based on a shape resulting from adding a cutting allowance for cutting processing to a target shape of the three-dimensional shaped article, performing the cutting processing for the first portion, obtaining a measured shape of the first portion by measuring a shape of the first portion, specifying an excess portion and a lacking portion of the first portion by comparing a shape of a portion corresponding to the first portion of the target shape with the measured shape, performing the cutting processing for the specified excess portion when the excess portion was specified, and ejecting the molten material so as to fill the specified lacking portion when the lacking portion was specified.

Abstract: This machine includes a horizontal receiving surface which is constituted by the bottom of a vat, the vat having a width and a length, and a device for supplying and spreading a suspension which includes a suspension applicator and an external tank, the applicator including a suspension reserve fed from the external tank, at least one vacuum-forming device in the reserve and at least one hole connected to the reserve and formed facing the surface the vacuum forming device being controlled to regulate the amount of suspension released from the hole, the applicator being arranged along the width of the vat and having at least the printing width and being configured to translate along the length of the vat to be able to apply suspension through the hole onto the surface.

Abstract: An additively manufactured component that includes a tool with a region having a plurality of overlying metal layers each derived from a metal powder filament. The region has a predetermined yield point selected based on an operation to be performed with the tool.