Abstract: A mobile 3D printing device, system and method based on the addition of material intended to be attached to a lifting device with a single lifting cable or chain, including a printing head adapted to receive material and depositing it; fixing means adapted to link the printing head to the lifting device, and stabilization means adapted to stabilize the position of the printing head by a gyroscopic effect. The printing device enables the control of the printing of a structure to be printed, in particular the position of the printing head, to reduce the labor costs and the time to install such a device on a standard crane provided with a hook.

Abstract: A method of producing an optical device from a volume of a curable composition, includes the following steps: —polymerizing a first portion of the volume by irradiating an external surface of the volume with a light irradiation, thereby increasing a transmittance of the first portion for the light irradiation; —polymerizing a second portion of the volume by irradiating the second portion with the light irradiation through the external surface and the polymerized first portion, wherein the light irradiation has a light intensity varying over the external surface between a first light intensity and a second light intensity distinct from the second light intensity. A corresponding system is also described.

Abstract: A method of making an object by additive manufacturing includes: (a) providing an additive manufacturing apparatus including a light source; (b) providing a carrier platform having a substantially planar object adhesion surface, the adhesion surface having a plurality of elongate wash channels formed therein; (c) producing the object on the carrier platform adhesion surface with the additive manufacturing apparatus from a light polymerizable resin, the object having at least one internal cavity formed therein; then (d) washing the object on the carrier platform with a wash liquid under conditions in which the wash liquid reaches the at least one internal cavity through the wash channels; then (e) optionally, at least partially drying the object on the carrier platform by separating the same from the wash liquid, and then agitating the object on the carrier platform to drain excess wash liquid from the object; (f) optionally, further curing the object.

Abstract: The present invention concerns methods of forming a three-dimensional object, and polymerizable liquids such as dual cure resins useful for making a three-dimensional object by sterolithography, such as by continuous liquid interface production (CLIP).

Abstract: According to an example, a three-dimensional (3D) printer may include a delivery device to deposit a light absorbing agent onto selected areas of a layer of build material particles, in which the light absorbing agent absorbs light having wavelengths that are around the ultraviolet wavelength range. The 3D printer may also include a light source to apply light onto the selectively deposited light absorbing agent and the layer of the build material particles, in which the light absorbing agent absorbs light around the ultraviolet wavelength range from the applied light and becomes heated to a temperature that causes the build material particles upon which the light absorbing agent has been deposited to melt and to fuse together following cessation of the application of the light.

Abstract: A manufacturing method and a manufacturing system of perovskite color conversion film are provided. The manufacturing method includes: manufacturing perovskite plastic wires; providing a substrate with areas to be printed; and heating and printing the plastic wires on the areas to be printed of the substrate by used of fused deposition modeling 3D printing technology, to formed a perovskite color conversion film.

Abstract: The invention relates to a method for producing a three-dimensional object by means of a powder-based additive production method from at least one first powdery material, wherein the at least one first powdery material comprises at least one first compound having a first reactive group a). The first reactive group a) is selected from the group consisting of an isocyanate group, a blocked isocyanate group, or a mixture thereof. The invention further relates to a component produced using the method according to the invention, and to powdery material that is suited for the method according to the invention.

Abstract: The devices and systems described herein generally relate to magnetic field chambers and reversibly hardenable ferrofluids. The reversibly hardenable ferrofluid can include a magnetically responsive fluid and a reversible hardening agent. The reversibly hardenable ferrofluid can achieve a first shape using one or more magnetic fields, such as delivered from a magnetic field chamber. Once the first shape is achieved, the reversibly hardenable ferrofluid can be cured or otherwise hardened. The hardened reversibly hardenable ferrofluid can be used for the intended purpose and then returned to a liquid state once the task is completed, allowing for reuse. The steps of hardening and liquifying can be mediated by the magnetic field chamber, as described in embodiments herein.

Abstract: A method is provided for manufacturing a complex hollow article from a flexible polymer material. The method includes using an additive manufacturing system to form a precursory structure that is formed from a build material and phase change material, melting and removing the phase change material, injecting uncured liquid flexible polymer material into a cavity defined by the build material, curing and solidifying the flexible polymer material, and cracking and removing the build material from the flexible polymer material to provide the hollow article.

Abstract: A composition for model materials (4a) is used for shaping an optically shaped article by an inkjet optical shaping method, comprises a monofunctional monomer (A) and an oligomer (B) as a photocurable component, further, comprises no polyfunctional monomer (C) as a photocurable component, or comprises a polyfunctional monomer (C) as a photocurable component at 3.0 parts by weight based on 100 parts by weight of a whole composition for model materials, the oligomer (B) has a hydroxyl group or an amino group, and a total molar fraction of the hydroxyl group and the amino group in a total amount of the photocurable components is less than 5.0%. The composition for model materials (4a) can afford an optically shaped article that has flexibility, and does not crack even when it is bent.

Abstract: An artificial tooth molding apparatus comprises: a calculation control unit (10) configured to calculate and convert 3D graphic data (D_g) required for a process of molding an artificial tooth into continuous tomographic data (D_1) and to output the tomographic data (D_1); an elevation means (20) configured to form the artificial tooth (T); a tank (30) containing the ceramic mixture solution (S) provided for immersion of the formation stage (22) of the elevation means (20); an irradiation means (40) configured to irradiate the formation stage (22) with ultraviolet rays; and a filter part (50) configured to filter an ultraviolet irradiation area irradiated with the ultraviolet rays.

Abstract: A method of forming a porous three-dimensional (3D) silicone article is disclosed. The method comprises I) printing a first composition with a 3D printer to form a first layer from the first composition. The method further comprises II) printing a second composition on the first layer with the 3D printer to form a second layer from the second composition on the first layer. At least one of the first and second compositions comprises a silicone composition. In the method, step II) may optionally be repeated with independently selected composition(s) for any additional layer(s). At least one of the first and second layers does not consist of linear filaments. Finally, the method comprises III) exposing the layers to a solidification condition. The porous three-dimensional (3D) silicone article defines a plurality of voids.

Abstract: A system and method for producing fuel grain for a rocket engine horizontally with an additive manufacturing machine is disclosed. To begin, a fuel grain model is received. The fuel grain model is oriented in a direction of a central core axis and divided into two-dimensional layers with defined footprint areas. In accordance with the fuel grain model, a first layer is printed by applying successive fuel beads in a direction primarily parallel to the central core axis.

Abstract: The present invention relates to the use of a filament comprising a core material (CM) comprising a ceramic material precursor (CMP) and the core material (CM) is coated with a layer of shell material (SM) comprising a thermoplastic polymer as a support material in a fused filament fabrication process. Further, the invention relates to three-dimensional objects and a process for the preparation thereof.

Abstract: An object of the present invention is to provide a novel polymer composition for stereolithography that is capable of suitably providing an elastic molded product by stereolithography. A polymer composition for stereolithography containing a liquid polymer and a monomer, the polymer composition for stereolithography having a viscosity of 3,000 mPa·s or less, the viscosity being measured in an environment of a temperature of 25° C. and a relative humidity of 50% using an E-type viscometer under conditions of a cone plate diameter ? of 25 mm and a shear rate of 100 sec?1.

Abstract: The present invention relates to a method for producing an object, comprising the step of producing the object according to an additive production process from a construction material, wherein the construction material comprises a mixture of a plurality of powdery thermoplastic materials which are different from one another due to at least one mechanical property and at least one thermoplastic material is a thermoplastic polyurethane material. The invention also relates to an object obtained according to said method.

Abstract: Systems and methods for a robotic fabrication and assembly platform providing a plurality of printable materials for fabrication of a three-dimensional object are provided. A method includes activating a pneumatic actuator to extend a quick-change turret from a pneumatic seal. The method may insert a plurality of barrels into the quick-change turret. The method may also align one of the plurality of barrels with a pneumatic seal in the quick-change turret. The method may also disengage the pneumatic actuator to seat the aligned barrel onto the pneumatic seal and print a three-dimensional object. The method may further halt the printing of the three-dimensional object prior to completion and engage the pneumatic actuator to extend the quick-change turret from the pneumatic seal.

Abstract: A composition for forming a silicone elastomer is disclosed. The composition comprises: A) a linear organopolysiloxane having at least two silicon-bonded ethylenically unsaturated groups per molecule; B) a linear organohydrogensiloxane having at least two silicon-bonded hydrogen atoms per molecule; C) at least one cross-linker; and D) a hydrosilylation catalyst. The cross-linker C) is selected from the group consisting of: C1) an organopolysiloxane having at least three silicon-bonded ethylenically unsaturated groups per molecule; and C2) an organopolysiloxane having at least three silicon-bonded hydrogen atoms per molecule. At least one of the silicon-bonded ethylenically unsaturated groups of component C1) has a lower reactivity relative to the silicon-bonded ethylenically unsaturated groups of component A). Moreover, at least one of the silicon-bonded hydrogen atoms of component C2) has a lower reactivity relative to the silicon-bonded hydrogen atoms of component B).

Abstract: The present application discloses a method for three-dimensional deposition printing to manufacture optical elements including ophthalmic devices by controlling the level of oxygen in the polymerization mixture and the printing environment to achieve precision in form and smoothness of surface for image quality optical performance.

Abstract: An optical element includes an optical lens produced by an additive manufacturing method and a holder formed at least in part with the optical lens by the additive manufacturing method. The holder is adapted for cooperation with a manufacturing machine to thereby position the optical lens at a predetermined position in the manufacturing machine. A corresponding assembly and a method of manufacturing an optical element are also described.