In an example, a three-dimensional (3D) printing kit includes a metallic build material composition; a binding agent; and a release agent for patterning a breakable connection. The binding agent includes a first latex binder. The release agent includes a white colorant including a white metal oxide pigment coated with a coating selected from the group consisting of alumina, silica, and combinations thereof; boehmite particles; a second latex binder; and an aqueous vehicle.

A method includes receiving a representation of an initial design domain. The method also includes iteratively generating intermediate part designs by redistributing material within the initial design domain. The intermediate part designs each include a 3D part and a support volume. The method also includes calculating a measure of inaccessibility of the support volume of each intermediate part design by at least one subtractive tool assembly. At least one of the intermediate part designs is generated based at least partially upon the measure of inaccessibility of a previous one of the intermediate part designs.

A method includes receiving a representation of an initial design domain. The method also includes iteratively generating intermediate part designs by redistributing material within the initial design domain. The intermediate part designs each include a 3D part and a support volume. The method also includes calculating a measure of inaccessibility of the support volume of each intermediate part design by at least one subtractive tool assembly. At least one of the intermediate part designs is generated based at least partially upon the measure of inaccessibility of a previous one of the intermediate part designs.

A method for preparing an additive manufacturing program includes a loading step, a dividing step, an overhang calculating step, a subdividing step, a maintaining step, and an outputting step. In the loading step, a three-dimensional model is loaded. In the dividing step, the three-dimensional model is divided into divided layers. In the overhang calculating step, an overhang angle or overhang length of the divided layer is calculated. In the subdividing step, at least a part of the divided layer including an overhang portion is subdivided into two or more in a lamination direction. In the maintaining step, neither subdivision of the divided layer nor addition of a support structure supporting the divided layer is performed. The subdividing step and the maintaining step are selectively performed based on the overhang angle or overhang length. In the outputting step, an additive manufacturing program defining a command pertaining to additive manufacturing is output.

An additively-manufactured component may include a support structure comprising an array of support members, and a component body integrally formed with the support structure. The array of support members may include a plurality of conduction gates. Respective ones of the plurality of conduction gates may define a portion of a corresponding support member that has a reduced unit area and that provides resistance to thermal conduction through the corresponding support member. The plurality of conduction gates may be respectively located at a plurality of locations along a vertical axis of the support structure.

A method for manufacture of a complex component includes construction of the component from a metal material in an additive manufacturing method with at least one cavity segment that has a cavity open on at least one side and defined by an interior surface of the component, formation of an auxiliary electrode during construction of the component, formation of one or a plurality of supporting structures that connect the auxiliary electrode to the interior surface of the component during the construction of the component, electrical insulation of the auxiliary electrode from the interior surface by separating the supporting structures from the interior surface or from the auxiliary electrode, and performance of an electro-polishing of the interior surface in an electrolyte bath by connecting the component and the auxiliary electrode to different poles of an electric voltage source.

A method for manufacture of a complex component includes construction of the component from a metal material in an additive manufacturing method with at least one cavity segment that has a cavity open on at least one side and defined by an interior surface of the component, formation of an auxiliary electrode during construction of the component, formation of one or a plurality of supporting structures that connect the auxiliary electrode to the interior surface of the component during the construction of the component, electrical insulation of the auxiliary electrode from the interior surface by separating the supporting structures from the interior surface or from the auxiliary electrode, and performance of an electro-polishing of the interior surface in an electrolyte bath by connecting the component and the auxiliary electrode to different poles of an electric voltage source.

The present disclosure various apparatuses, and systems for 3D printing. The present disclosure provides three-dimensional (3D) printing methods, apparatuses, software and systems for a step and repeat energy irradiation process; controlling material characteristics and/or deformation of the 3D object; reducing deformation in a printed 3D object; and planarizing a material bed.

A method of additive manufacture is disclosed. The method may include creating, by a 3D printer contained within an enclosure, a part having a weight greater than or equal to 2,000 kilograms. A gas management system may maintain gaseous oxygen within the enclosure atmospheric level. In some embodiments, a wheeled vehicle may transport the part from inside the enclosure, through an airlock, as the airlock operates to buffer between a gaseous environment within the enclosure and a gaseous environment outside the enclosure, and to a location exterior to both the enclosure and the airlock.

The present invention relates to an additive manufacturing support (1) comprising, on a plate of an additive manufacturing machine, a stack produced by additive manufacturing, having: on the one hand, a breakable zone with a structure suitable for holding, during its manufacture, a part (100) intended to be produced by additive manufacturing, and on the other hand, between the plate and the zone with a breakable structure, an intermediate zone with a porous structure.