Abstract: Disclosed herein is an instrument that enables the in situ formation of architected planar biomaterials and tissues by translating a printer head along a deposition surface such as a patient having burn injuries. In handheld embodiments of the instrument, cell-laden biopolymer solutions are perfused through a moving microfabricated printer head and deposited onto a stationary planar surface or a wound. The printer head may be translated via a drive mechanism. A soft deformable roller mitigates further damage to the injured area of skin as it rolls over it and a gimbal mechanism to which the printer head is attached is in contact with the injured tissue but is configured so that the printer head while in contact with tissue, does not exert undue pressure on the would area.

Abstract: An additive manufacturing method and system comprising: a nozzle having a nozzle sidewall defining a central channel for allowing a deposition material filament to be dispensed therethrough on a workpiece; a heat source operatively coupled to the nozzle for melting the deposition material filament dispensed through the nozzle to form an additive material layer on a top surface of the workpiece; and an ultrasonic wave generator for providing ultrasonic waves into the melted deposition material in order to break up the oxide layer around the melted deposition material and bond the additive material layer to the workpiece.

Abstract: A rectangular substrate is prepared by providing a starting rectangular substrate having front and back surfaces and four side surfaces as ground, and pressing a rotary polishing pad perpendicularly against one side surface under a constant pressure, and relatively moving the rotary polishing pad and the substrate parallel to the side surface, for thereby polishing the side surface of the substrate. In the imprint lithography, the rectangular substrate is capable of controlling compression and pattern shape at a high accuracy and thus transferring a complex pattern of fine feature size to a recipient.

Abstract: A CIPP liner reel system for managing the utilization and deployment of CIPP liners. The CIPP liner reel system generally includes a frame connected to a reel and drive unit. The drive unit is connected to the reel to control the rotation of its core. This core contains an opening that provides access to a connector unit within the core. This connector unit can be used to connect the reel to the end of a CIPP liner using a strap. Rotation of the core causes CIPP liner to wind on to or unwind from the reel. The reel may also contain a left guide member and a right guide member to assist in controlling the process of winding and unwinding the CIPP liner. The frame may also include a tractor connector that enables the CIPP liner reel system to be coupled to and transported by a tractor without affecting its operation.

Abstract: In an example, a method includes in an additive manufacturing process, generating a first object and generating an ancillary object on top of the first object to reduce a thermal gradient of the first object during cooling.

Abstract: A system and method of additively manufacturing a part via salt micro-spheres. The method includes mixing salt micro-spheres with an additive manufacturing material to form an additive manufacturing material mixture. The additive manufacturing material mixture is deposited on a build platform layer by layer and cured so as to create a structure having pores formed by the salt micro-spheres. The salt micro-spheres may then be dissolved and flushed from the pores.

Abstract: In some examples, a controller receives measurement data responsive to operation of a vibrated spreader for use in dispensing a build material onto a target surface, and controls a frequency of a vibration of the spreader based on the measurement data.

Abstract: A system includes a controller to receive data corresponding to an object or slices of the object to be generated by a 3D printer, wherein the 3D printer includes an array of printhead nozzles to selectively eject a print agent on a layer of build material in a build chamber having a build chamber wall, the array of printhead nozzles spanning substantially the full width of the build chamber and moveable along a length of the build chamber. The controller to generate first print data used to generate layers of the object based on the received object data, and to generate second print data used to generate layers of a sacrificial barrier located between the object and the build chamber wall, the second print data is generated such that different parts of the sacrificial barrier are generated using a different plurality of nozzles of the array of printhead nozzles.

Abstract: A method for producing a three-dimensional molded object includes forming a solidified layer by irradiating an irradiation region of a material layer with a laser beam or an electron beam, obtaining data about projections having a height higher than a predetermined value formed on a surface of the solidified layer, calculating heights of the projections, areas of the projections, or the number of the projections based on the data, and determining a molded state of the solidified layer by making a comparison between the calculated heights of the projections and a first threshold relating to heights of the projections, between the calculated areas of the projections and a second threshold relating to an areas of the projections, or between the calculated number of the projections and a third threshold relating to the number of the projections.

Abstract: In an aspect, a mold stack may comprise two adjacent components, one at least partially defining a vent adjustable between a molding configuration and a cleaning configuration. A junction of the components may be adjustable between a molding configuration, wherein mating faces contact one another to define a parting line, and a cleaning configuration, wherein mating faces are separated to create a molding cavity extension therebetween and an auxiliary melt barrier prevents uncontrolled flashing from the extension.

Abstract: A three-dimensional shaping apparatus shapes a first shaped article by ejecting a material from an ejection section, forms a first portion of a second shaped article by adjusting an output of a temperature adjusting section while measuring a temperature of the first shaped article by a temperature sensor so that a viscosity of the first shaped article calculated based on the temperature of the first shaped article measured by the temperature sensor and first relational data representing a relationship between a temperature and a viscosity of the material becomes a predetermined viscosity or less, and ejecting the material from the ejection section, and forms a second portion that is a portion adjacent to the first portion of the second shaped article by ejecting the material from the ejection section while adjusting a temperature of the first portion by the temperature adjusting section with the adjusted output.

Abstract: Described is a method for manufacturing a radio frequency (RF) absorber. The method includes first determining a set of desired RF absorption properties for a RF absorber. A computer model for the RF absorber having the determined set of desired RF absorption properties is then produced. Using a three-dimensional (3D) printing process, melted plastic filament loaded with a RF absorber material is deposited in in computer controlled patterns according to the computer model, thereby producing the RF absorber having the set of desired RF absorption properties.

Abstract: A method of curing an aircraft component including applying a temperature sensitive adhesive to a surface of a component, the surface having a contour; positioning a heating tool including a manifold with a ventilation path such that the ventilation path is adjacent to the surface by aligning the ventilation path to the contour of the component; and heating the surface of the component with uniform airflow from the ventilation path; wherein the manifold includes a chamber with a diverging portion configured to provide uniform airflow through the ventilation path to provide heating to the surface.

Abstract: Printers are disclosed. An example printer includes a build controller to access metrics of a layer on a work area and to select a dosing profile from a plurality of dosing profiles to fuse the layer based on the metrics.

Abstract: A movable raw material processing unit for an additive manufacturing device for manufacturing a solid article comprises a housing comprising a transport device for disengaging the raw material processing unit from the additive manufacturing device. The raw material processing unit comprises a raw material container unit, a build unit and a raw material distribution unit.

Abstract: A partitioned lifting forming type selective laser melting workbench, comprises at least forming platform (1) for powder-spreading and sintering and forming of workpiece, the forming platform (1) comprises forming inner abutment (1-1) and at least one forming outer abutment (1-2) which is sleeved on the forming inner abutment (1-1) and arranged in sequence from the inside to the outside in a radial direction, the forming inner abutment (1-1) and each forming outer abutment (1-2) are arranged in a manner of rise and fall, the forming inner abutment (1-1) or the forming outer abutment (1-2) falls independently, or the forming outer abutment (1-2) and the adjacent forming outer abutment or/and the forming inner abutment (1-1) fall together, it can form an area (2) to be subjected to powder-spreading for laser sintering and forming of workpiece.

Abstract: A system may include a printhead for ejecting a first fluid including a polymer, the ejected first fluid forming a substrate with a thermal conductivity of less than 0.5 W/(m-K); a spreader to spread a layer of metal particulate on the substrate, wherein the printhead further ejects a second fluid, the ejected second fluid masking a portion of the layer of metal particulate on the substrate; and a pulse irradiation light source to fuse an unmasked portion of the layer of metal particulate.

Abstract: In some examples, an additive manufacturing system includes a dispensing device, an applicator, a thermal energy source, a thermal imaging device, and a controller. The controller is to cause the dispensing device to deposit a layer of build material and cause the applicator to apply the fusing agent to form an object portion and to apply the detailing agent to form a reference portion in the layer of build material. The controller is to cause the thermal energy source to heat the reference portion and to heat and fuse the object portion and cause the thermal imaging device to measure a temperature of the reference portion. The controller is to regulate a power level of the thermal energy source based on a comparison between the temperature of the reference portion and a set-point for the reference portion, which is based on a target temperature for the object portion.

Abstract: Methods to in-situ monitor production of additive manufacturing products collects images from the deposition process on a layer-by-layer basis, including a void image of the pattern left in a slurry layer after deposition of a layer and a displacement image formed by immersing the just-deposited layer in a renewed slurry layer. Image properties of the void image and displacement image are corrected and then compared to a binary expected image from a computer generated model to identify defects in the just-deposited layer on a layer-by-layer basis. Additional methods use the output from the comparison to form a 3D model corresponding to at least a portion of the additive manufacturing product. Components to control the additive manufacturing operation based on digital model data and to in-situ monitor successive layers for manufacturing defects can be embodied in a computer system or computer-aided machine, such as a computer controlled additive manufacturing machine.

Abstract: According to an example, an apparatus may include a recoater, an energy source, a carriage supporting the energy source, and a controller. The controller may control the recoater to spread build material particles into a layer on top of a previously applied layer containing fused build material particles and the carriage to move ahead of the recoater to cause the energy source to apply energy onto build material particles in the previously applied layer prior to the recoater spreading the build material particles onto the previously applied layer. The energy source is to heat the fused build material particles to or maintain the fused build material particles at a temperature above a certain temperature and the recoater is to be controlled to spread the build material particles on top of the previously applied layer prior to the fused build material particles falling below the certain temperature.