Described are finishing solutions for removing support material and finishing 3D-printed objects. The finishing solution may contain a base (e.g., an aqueous base), an optional first caustic agent, an optional second caustic agent, an optional third caustic agent, an optional emulsifier, a polyol, a first antifoaming agent, an optional second antifoaming agent, and water. Also described are methods of using the finishing solution described herein.

The disclosure provides a method for surface treatment of a composite material part and the prepared part. The method comprises the steps of: (1) providing a surface of a carbon fiber composite material part; (2) preparing a surface protection layer; (3) polishing the carbon fiber reinforced resin-based composite material surface after transparent powder is cured; (4) spraying transparent powder to the carbon fiber reinforced resin-based composite material surface after the transparent powder thereon is cured and curing it; (5) polishing the carbon fiber reinforced resin-based composite material surface after the transparent powder is cured; and (6) spraying a clear lacquer to the carbon fiber reinforced resin-based composite material surface after the transparent powder is cured and curing it.

Provided is a method of making a coated object, which may include stereolithographically producing a green intermediate object from a dual cure polymerizable resin, the intermediate object containing uncured polymerizable material therein; then, optionally cleaning the green object; then, in any order: coating at least one surface portion of the object with a particulate material; and heating the object sufficiently to further cure the object; the coating and/or heating steps carried out under conditions in which uncured polymerizable material sweats (or exudes) to the surface of said object, and wherein the uncured polymerizable material contacts the particulate material, polymerizes, and bonds the particulate material to the surface of the object during the coating and/or heating steps. Also provided is a coated object produced by the method.

A method for post-treating a three-dimensional object (2) produced by selectively solidifying, layer by layer, of a building material (15) in powder form and/or unsolidified building material (13) in which the three-dimensional object (2) is embedded, wherein the three-dimensional object (2) produced and/or the unsolidified building material (13) are treated with a liquid (33). The liquid (33) comprises a liquid carrier substance and at least one further substance that reduces the surface tension of the carrier substance.

The present invention relates to a method for removing powder from a component or part produced by a powder bed additive manufacturing system. The method comprises the steps; providing a part, the part having at least one internal cavity with at least one external opening, the at least one cavity being at least partly filled with powder grains, the powder grains being connected to each other and to the walls of the cavity by mechanical, frictional, electrical, physical or chemical forces; adding medium in liquid phase to the at least one cavity of the part, the liquid having the property that it expands in phase transition from liquid to solid phase; transforming added medium to solid phase to loosen and break up at least a fraction of the powder grains connections from each other; and removing powder from the at least one internal cavity.

A dispatch system and a dispatch method for manufacturing mold are provided. The dispatch system includes a control unit, a mold material storage unit, a processing cutter storage unit, an object pick-and-place and transfer unit, a mold processing unit and a mold product storage unit. The mold material storage unit includes many unprocessed mold materials. The processing cutter storage unit includes many processing cutters. The object pick-and-place and transfer unit is electrically connected to the control unit and disposed between the mold material storage unit and the processing cutter storage unit. One of the unprocessed mold materials and one of the processing cutters are transferred to the mold processing unit by the object pick-and-place and transfer unit, the unprocessed mold material is processed to form a mold product by the mold processing unit, and the mold product is transferred to the mold product storage unit.

Provided is a method of making a coated object, which may include stereolithographically producing a green intermediate object from a dual cure polymerizable resin, the intermediate object containing uncured polymerizable material therein; then, optionally cleaning the green object; then, in any order: coating at least one surface portion of the object with a particulate material; and heating the object sufficiently to further cure the object; the coating and/or heating steps carried out under conditions in which uncured polymerizable material sweats (or exudes) to the surface of said object, and wherein the uncured polymerizable material contacts the particulate material, polymerizes, and bonds the particulate material to the surface of the object during the coating and/or heating steps. Also provided is a coated object produced by the method.

A first aspect of the present invention is a constant force compression construct, comprising: (a) a plurality of compressible layers, each compressible layer comprising a plurality of interconnected flexible struts configured as a regular hexagonal lattice of repeating unit cells, with the layers spaced apart from one another, and with the unit cells of each layer aligned with one another; and (b) a plurality of beams interconnecting each of the compressible layers with each respective adjacent compressible layer to form a three-dimensional lattice having an upper portion, a lower portion, and a compressible region therebetween, with the repeating unit cells contained in the compressible region.

A method of forming a three-dimensional object, which method includes a cleaning or washing step, is carried out by: (a) providing a carrier and a fill level, and optionally an optically transparent member having a build surface defining the fill level, the carrier and the fill level having a build region therebetween; (b) filling the build region with a polymerizable liquid, the polymerizable liquid comprising a mixture of (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from the first component; (c) irradiating the build region with light, to form a solid polymer scaffold from the first component and also advancing the carrier away from the build surface to form a three-dimensional intermediate having the same shape as, or a shape to be imparted to, the three-dimensional object and containing the second solidifiable component carried in the scaffold in unsolidified and/or uncured form; (d) washing the three-dimensional intermediate; and (e) concurrently with or subsequent to the irradiating step, and/or the washing step, solidifying and/or curing the second solidifiable component in the three-dimensional intermediate to form the three-dimensional object.

Disclosed herein are methods of forming a three-dimensional object having a biodegradable or bioerodible polymer or copolymer. In some embodiments, the methods include providing a dual cure resin with a photoinitiator, monomers and/or prepolymers that are polymerizable by exposure to actinic radiation or light, at least one cyclic ester, a ring-opening polymerization initiator, and a ring-opening polymerization catalyst. Resins useful for carrying out such methods, and products produced from such methods, are also described.