Systems and methods for forming an object using additive manufacturing. One method includes receiving a digital model of the object, predicting a shrinking characteristic or receiving a predicted shrinking characteristic of the object that will occur during thermal processing of the object, once formed, and generating, based on the shrinking characteristic of the object, instructions for forming a raft on which the object will be formed. The instructions for forming the raft are configured to form a raft having a shrinking characteristic that reflects the shrinking characteristic of the object.

A composite material consisting of a bio-filler and a thermoplastic matrix is described. The bio-filler derives from the lees taken as solid/liquid residue from the bottom of containers containing wine or must, after fermentation, during storage or after any other treatment of wine or must, as well as after filtration, centrifugation or after any process of separation of wine or must. A process for obtaining such a bio-filler and three processes for obtaining an article with such a composite material is also described.

A composite material consisting of a bio-filler and a thermoplastic matrix is described. The bio-filler derives from the lees taken as solid/liquid residue from the bottom of containers containing wine or must, after fermentation, during storage or after any other treatment of wine or must, as well as after filtration, centrifugation or after any process of separation of wine or must. A process for obtaining such a bio-filler and three processes for obtaining an article with such a composite material is also described.

Various implementations include a three-dimensional printing device. The device includes a primary extruder, a secondary extruder, and a build plate. The primary extruder has a hollow primary body for accepting a printing material. An end of the primary body defines a primary extruder opening shaped to extrude a primary extrusion of melted printing material. The secondary extruder has a hollow secondary body for accepting a printing material. An end of the secondary body defines a secondary extruder opening shaped to extrude a secondary extrusion of melted printing material. A first primary extrusion extruded from the primary extruder disposed side by side with a second primary extrusion extruded from the primary extruder adjacent the build plate in a first layer defines a gap between adjacent edges of the first and second primary extrusions. A first secondary extrusion extruded from the secondary extruder is disposable in a second layer in the gap.

Various implementations include a three-dimensional printing device. The device includes a primary extruder, a secondary extruder, and a build plate. The primary extruder has a hollow primary body for accepting a printing material. An end of the primary body defines a primary extruder opening shaped to extrude a primary extrusion of melted printing material. The secondary extruder has a hollow secondary body for accepting a printing material. An end of the secondary body defines a secondary extruder opening shaped to extrude a secondary extrusion of melted printing material. A first primary extrusion extruded from the primary extruder disposed side by side with a second primary extrusion extruded from the primary extruder adjacent the build plate in a first layer defines a gap between adjacent edges of the first and second primary extrusions. A first secondary extrusion extruded from the secondary extruder is disposable in a second layer in the gap.

Provided are a cellulose composite material, a three-dimensional (3D) printing material and a 3D printing structure including the cellulose composite material, and a method of manufacturing a 3D printing structure using the cellulose composite material. The cellulose material may be used as a 3D printable eco-friendly material using cellulose that is an eco-friendly natural material and a compound having a catechol group that is derived from nature, and a structure implemented with 3D printing has excellent tensile strength or compressive strength.

A method of using solid profile rods instead of the usual filament coils for additive manufacturing methods such as 3D printing for industrial applications such as aircraft manufacturing, and to enable a more rapid production of fiber-composite components. The additive manufacturing device, or the 3D printer which generates the component layer by layer, respectively, comprises a material magazine in which a plurality of profile rods are stored. The profile rods are pre-tailored and are adapted to the component layer by layer. The profile rods, when printing, are successively retrieved from the material magazine and, by way of an infeed installation, guided to the nozzle of the additive manufacturing installation and subsequently applied to the printing bed so as to form the component layer by layer.

A method of using solid profile rods instead of the usual filament coils for additive manufacturing methods such as 3D printing for industrial applications such as aircraft manufacturing, and to enable a more rapid production of fiber-composite components. The additive manufacturing device, or the 3D printer which generates the component layer by layer, respectively, comprises a material magazine in which a plurality of profile rods are stored. The profile rods are pre-tailored and are adapted to the component layer by layer. The profile rods, when printing, are successively retrieved from the material magazine and, by way of an infeed installation, guided to the nozzle of the additive manufacturing installation and subsequently applied to the printing bed so as to form the component layer by layer.

A 3D drawing arrangement includes a feeding passage, a heater, a filament moving system, and a controller which includes a control circuit and a finger detector electrically connected to the control circuit, wherein when the finger detector detects a presence of a finger of a user which is aligned with the finger detector, the control circuit starts operation of the filament moving system to feed a filament to the heater along the feeding passage, so that the filament is heated and melted by the heater to produce the melted material flow.

A filament is fed to an extrusion head. The filament has a semi-crystalline polymeric reinforcement portion and a polymeric matrix portion. The reinforcement and matrix portions run continuously along a length of the filament. The reinforcement portion has a higher melting point and a higher crystallinity than the matrix portion. The temperature of the filament is raised in the extrusion head above the melting point of the matrix portion but below the melting point of the reinforcement portion so that the matrix portion of the filament melts within the extrusion head, thereby forming a partially molten filament within the extrusion head. The partially molten filament is extruded from the extrusion head onto a substrate, the reinforcement portion of the partially molten filament remaining in a semi-crystalline state as it is extruded from the extrusion head. Relative movement is generated between the extrusion head and the substrate as the partially molten filament is extruded onto the substrate in order to form an extruded line on the substrate. The matrix portion of the extruded line solidifies after the extruded line has been formed on the substrate.