A three-dimensional printing system includes a print bed and a shelf insertion mechanism for inserting a shelf of one or a plurality of auxiliary shelves into a print volume between the print bed and a printer head. A printer assembly is configured to deposit layers of material within the print volume to form one or more objects on a support platform, the support platform including the print bed or an auxiliary shelf that is inserted into the print volume by the shelf insertion mechanism. A controller is configured to control the shelf insertion mechanism to insert an auxiliary shelf between the print bed and a printer head of the system after formation of the objects on that support platform by the printer assembly is complete.

A three-dimensional printing system includes a print bed and a shelf insertion mechanism for inserting a shelf of one or a plurality of auxiliary shelves into a print volume between the print bed and a printer head. A printer assembly is configured to deposit layers of material within the print volume to form one or more objects on a support platform, the support platform including the print bed or an auxiliary shelf that is inserted into the print volume by the shelf insertion mechanism. A controller is configured to control the shelf insertion mechanism to insert an auxiliary shelf between the print bed and a printer head of the system after formation of the objects on that support platform by the printer assembly is complete.

A method for the additive manufacturing of an elastomer part, includes—the creation of a model of spatial coordinates of the part; followed by—the corresponding deposition of an elastomer material. The deposition is carried out in a plurality of substantially flat layers which are vertically stacked. The elastomer material is deposited in the form of a latex-based liquid composition having a dispersion of polymers in an aqueous base, and the deposition is carried out by formation and pressurized ejection of drops of a liquid composition.

The invention provides a method for manufacturing a 3D item (10), wherein the 3D item (10) comprises an outer layer (210) and a support structure (220) with cavities (230), wherein the outer layer (210) at least partly encloses the support structure (220), and wherein the method comprises: (a) a 3D printing stage comprising 3D printing with fused deposition modeling (FDM) 3D printable material (201) the outer layer (210) and the support structure (220) and at least partly filling the cavities (230) with a filler material (204); and (b) a post-treatment stage comprising post treating at least part of the outer layer (210) for reducing surface roughness.

A part is fabricated by an additive manufacturing process while levitating in space. Constituent features of the part are formed by 3-D printing. A part levitation system allows the spatial orientation of the part to be manipulated relative to one or more print heads.

A soluble material for three-dimensional modeling, which is used as a raw material of a support material for supporting a three-dimensional object when the three-dimensional object is produced, using a 3D printer of a FDM system, includes a polyester resin including one or more aromatic dicarboxylic acid monomer units A with a sulfonate group, one or more dicarboxylic acid monomer units B without a sulfonate group, and one or more diol monomer units. The proportion of the aromatic dicarboxylic acid monomer unit(s) A in the total of all dicarboxylic acid monomer units is from 10 to 70 mol %. The soluble material has hygroscopicity resistance while the material is large in dissolution rate into any neutral water and removable speedily from a precursor of the three-dimensional object without using any aqueous strong alkaline solution.

A three-dimensional shaped object using a plurality of materials can be shaped, and replenishment of the materials is implemented during shaping without stopping an apparatus. A three-dimensional laminating and shaping apparatus includes a shaping chamber in which a three-dimensional laminated and shaped object is shaped, at least two material spreaders that are provided in the shaping chamber and spread materials of the three-dimensional laminated and shaped object, at least two material suppliers that supply the materials to the material spreaders, a controller that controls movements of the material spreaders and the material suppliers, and a beam irradiator that irradiates the materials with a beam. The material spreaders and the material suppliers are respectively paired, and the controller controls the movements of the material spreaders and the material suppliers so that each of the material spreaders is supplied, at a predetermined timing, with the material from a paired one of the material suppliers.

Three-dimensional effect or structure with a strong bond may be achieved on any surface such as on wood, stone, paper, ceramic, and rubber/polymer, sponge/foam, cloth, and glass, cement, building structures or metals. Before application of tile 3D structure, the surface is first prepared with at least on a layer that can bind a subsequent layer. This tie (compatible) layer material may comprise of the adhesive layer and another tie (compatible) layer such as thermoplastic film or coating. 3D printing filament materials with a different set of properties are combined using unique methods, apparatus to produce new structures, effects or parts with a unique combination of properties. Continuous application of tie layer and 3D printing for unique small or large objects can be achieved.

Three-dimensional effect or structure with a strong bond may be achieved on any surface such as on wood, stone, paper, ceramic, and rubber/polymer, sponge/foam, cloth, and glass, cement, building structures or metals. Before application of tile 3D structure, the surface is first prepared with at least on a layer that can bind a subsequent layer. This tie (compatible) layer material may comprise of the adhesive layer and another tie (compatible) layer such as thermoplastic film or coating. 3D printing filament materials with a different set of properties are combined using unique methods, apparatus to produce new structures, effects or parts with a unique combination of properties. Continuous application of tie layer and 3D printing for unique small or large objects can be achieved.

In example implementations, a method is provided. The method includes printing a three-dimensional (3D) object that includes a secondary structure. The secondary structure is removed. A representation of a surface of the 3D object where the secondary structure was removed is captured. The 3D object is authenticated based on the representation of the surface.