Methods and apparatus for the fabrication of solid three-dimensional objects from liquid polymerizable materials at high resolution. A material is coated on a film non-digitally, excess material is removed digitally, by laser, leaving an image of a layer to be printed, and the image is then engaged with existing portions of an object being fabricated and exposed to a non-digital UV curing light source. Since the only part of the process that is digital is the material removal, and this part is done by laser, the speed of printing and the robustness of the manufacturing process is improved significantly over conventional additive or 3D fabrication techniques.

Methods and apparatus for the fabrication of solid three-dimensional objects from liquid polymerizable materials at high resolution. A material is coated on a film non-digitally, excess material is removed digitally, by laser, leaving an image of a layer to be printed, and the image is then engaged with existing portions of an object being fabricated and exposed to a non-digital UV curing light source. Since the only part of the process that is digital is the material removal, and this part is done by laser, the speed of printing and the robustness of the manufacturing process is improved significantly over conventional additive or 3D fabrication techniques.

A method, product, apparatus, and article of manufacture for the application of the Composite Based Additive Manufacturing (CBAM) method to produce objects in metal, and in metal fiber hybrids or composites. The approach has many advantages, including the ability to produce more complex geometries than conventional methods such as milling and casting, improved material properties, higher production rates and the elimination of complex fixturing, complex tool paths and tool changes and, for casting, the need for patterns and tools. The approach works by slicing a 3D model, selectively printing a fluid onto a sheet of substrate material for each layer based on the model, flooding onto the substrate a powdered metal to which the fluid adheres in printed areas, clamping and aligning a stack of coated sheets, heating the stacked sheets to melt the powdered metal and fuse the layers of substrate, and removing excess powder and unfused substrate.

The invention relates to a device and a method for the production of three-dimensional objects, in particular of at least parts of dental prosthetic restorations, by a stripping device wiping off plastic material, which protrudes vertically beyond a container, into a collecting container and forms a projection surface. According to the invention, a stripping device and a light source are coupled and simultaneously guided, at a defined distance, across the liquid light-curing plastic material, whereby the stripping device is guided at a defined distance right ahead of the light source and forms the projection surface for the illuminated field of the light source.

The three-dimensional object building apparatus includes a powder delivering unit that delivers a powder on an object building area, a powder flattening device that flattens the powder delivered from the powder delivering unit to form a powder layer, and a light beam radiating unit that is disposed above the object building area and radiates a light beam on the powder layer to sinter or melt solidify the powder for building an object. The three-dimensional object building apparatus also includes a transferring mechanism that moves the light beam radiating unit in three-dimensional directions, and a shroud that moves integrally with the light beam radiating unit and surrounds a space above an area of the powder layer that is smaller than the object building area around a radiation of the light beam. The powder delivering unit and the powder flattening device move integrally with the light beam radiating unit.

There is provided a 3D printing system, methods, and materials for the 3D printing of objects that include a cured hydrogel material, an uncured hydrogel material, and a support material. The cured hydrogel material may define a scaffold for organs or other biological structures. The 3D printing system selectively deposits the hydrogel material and support material, dries the hydrogel material, and selectively applies a catalyst to the hydrogel material to selectively cure the hydrogel material. Once the 3D printing has completed, the uncured hydrogel material may be drained and the support material may be melted or dissolved leaving a scaffold of cured hydrogel material that may be infused with living cells of the desired organ or biological structure.

A method for making a mold is provided. The method includes the following steps a) to d): a) in which a polymer solution is discharged from a liquid droplet discharger onto a stage, where the polymer solution is capable of solating at a temperature lower than a sol-gel transition temperature and gelating at a temperature higher than the sol-gel transition temperature; b) in which the polymer solution discharged onto the stage is maintained at a temperature higher than the sol-gel transition temperature; c) in which the liquid droplet discharger and the stage are relatively moved to form a gel layer on the stage, where the gel layer has a shape corresponding to a locus of the relative movement; and d) in which the polymer solution is discharged from the liquid droplet discharger onto the gel layer to laminate another gel layer thereon and obtain a laminated object.

Described are techniques for additive manufacturing with magnetic manipulation. The techniques including a method comprising performing additive manufacturing using a material containing a ferromagnetic additive to create a component. The method further comprises, during the additive manufacturing, generating a magnetic field near a portion the component, where the magnetic field causes the portion of the component to deform during the additive manufacturing based on the material containing the ferromagnetic additive.

Described are techniques for additive manufacturing with magnetic manipulation. The techniques including a method comprising performing additive manufacturing using a material containing a ferromagnetic additive to create a component. The method further comprises, during the additive manufacturing, generating a magnetic field near a portion the component, where the magnetic field causes the portion of the component to deform during the additive manufacturing based on the material containing the ferromagnetic additive.

A method, non-transitory computer readable medium and apparatus for forming an image on a three dimensional (3D) object are disclosed. For example, the method includes, detecting the 3D object that is formed from a first material is positioned on a movable bed, providing a bed of a powder of a second material on the movable bed around the 3D object, vibrating the bed of powder to provide a level surface of the powder, sintering a portion of the bed of the powder onto the 3D object, moving the 3D object and repeating the providing, the vibrating, the sintering and the moving to form the image onto the 3D object.