A method for producing a 3D-printed tissue substitute is disclosed, utilizing a 3D printing device including a tank including a yield stress fluid in which the material is printed, the printing material delivered by the cartridge includes polyvinyl alcohol and gelatin, the method including a step following which, after printing the material in the yield stress fluid, a printed intermediate device is solidified in the yield stress fluid by lowering the temperature of the tank. The intermediate device is removed from the tank, rinsed and dried in order to obtain the tissue substitute.

An additive manufacturing apparatus can include a stage configured to hold one or more cured layers of resin that form a component. A radiant energy device can be operable to generate and project radiant energy in a patterned image. An actuator can be configured to change a relative position of the stage relative to the radiant energy device. A reclamation system can be downstream of the stage and can be configured to remove at least a portion of the resin from a resin support. The reclamation system can include a first collection structure configured to accept a resin support therethrough along a resin support movement direction. A first scraper is positioned within the first collection structure. The first scraper has an elongation axis that is offset from the resin support movement direction by an offset angle that is less than 90 degrees.

A reclamation system for an additive manufacturing apparatus can include a collection structure configured to remove at least a portion of the resin from a foil. A containment vessel can be configured to retain the resin removed from the foil. A drain can direct the resin from the containment vessel to a reservoir.

A three-dimensional (3D) printing system is configured to manufacture a three-dimensional 3D article in a layer-by-layer manner. The 3D printing system includes a resin vessel, a tank agitation subsystem, a fabrication subsystem, and a controller. The resin vessel is configured to contain photocurable resin and has a lower region within a distance H of a bottom surface of the resin vessel. The agitation subsystem includes (a) a grating disposed within the lower region of the resin vessel and (b) an agitation movement mechanism coupled to the grating. The fabrication subsystem is configured to form the 3D article by a layer-by-layer selective curing of the photocurable resin. The controller is configured to operate the agitation movement mechanism to oscillate the grating along a lateral Y-axis to remix filler particulates within the photocurable resin.

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).

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).

An apparatus for removing powder from a powder-based additively manufactured part includes a chamber for locating a powder-based additively manufactured part therein, a support mesh for supporting a powder cake that includes one or more parts therein, an inlet for introducing a gas into the chamber to flow throughout the powder cake and fluidise the powder to disengage from the part, and an outlet to allow the gas to exit the chamber. The apparatus further includes a cryogenic blasting system for spraying a mixture of liquid CO.sub.2 and compressed air at the powder-based additively manufactured part to remove powder therefrom.

An apparatus for removing powder from a powder-based additively manufactured part includes a chamber for locating a powder-based additively manufactured part therein, a support mesh for supporting a powder cake that includes one or more parts therein, an inlet for introducing a gas into the chamber to flow throughout the powder cake and fluidise the powder to disengage from the part, and an outlet to allow the gas to exit the chamber. The apparatus further includes a cryogenic blasting system for spraying a mixture of liquid CO.sub.2 and compressed air at the powder-based additively manufactured part to remove powder therefrom.

Apparatus (1) for additively manufacturing three-dimensional objects (2) by means of successive layerwise selective consolidation of layers of a build material (3) which can be consolidated by means of an energy source (4), which apparatus (1) comprises an optical unit (10) with at least one optical surface (9) arranged in a process chamber (6) of the apparatus (1), wherein the apparatus (1) comprises at least one determination device (12) with at least one light source (13) and at least one determination unit (14) adapted to determine at least one radiation parameter of radiation (15) emitted from the light source (13) and reflected at the optical surface (9) of the optical unit (10), wherein the determination device (12) is adapted to determine at least one condition information of the optical unit (10) based on the determined radiation parameter.

A method for preparing a pair of personalized three-dimensional (3D) printing medical isolation goggles includes the steps of S1: establishing a medical isolation goggles matrix; S2: acquiring the facial data of a user; S3: establishing a personalized medical isolation goggles model; S4: performing additive manufacturing, wherein a pair of medical isolation goggles is provided with high personalized fitness and high breathability for patients with eye diseases such as conjunctivitis, virus-susceptible patients, front-line clinical medical workers and related workers, and the compression damage to the face caused by the wearing of the medical isolation goggles for a long time is reduced in terms of fitness and comfort, where the medical isolation goggles are manufactured in a mode of additive manufacturing, small-batch rapid production can be performed after data merging, and a large number of processes and costs are reduced in the production cycle.