The present disclosure provides downhole tools, methods for three dimensional printing hardfacing on such downhole tools, and systems for implementing such methods.

A method of repairing a component using an additive manufacturing process is presented. The method includes submerging the component into a powder bed so that a portion of the component to be repaired is level with a surface of the powder bed and a protruding portion of the component protrudes above the surface of the powder bed, positioning a split wiper that includes a first wiper segment and a second wiper segment in the powder bed at the surface, advancing a quantity of powder by translating the first wiper segment and the second wiper segment across the surface of the powder bed, and directing a laser beam across the surface to fuse powder particles of the powder bed to the underlying substrate forming a layer of the component. Each of the first wiper segment and the second wiper segment follow a different contour of the protruding portion at the surface.

The present invention relates to an article fabrication system having a plurality of material deposition tools containing one or more materials useful in fabricating the article, and a material deposition device having a tool interface for receiving one of the material deposition tools. A system controller is operably connected to the material deposition device to control operation of the material deposition device. Also disclosed is a method of fabricating an article using the system of the invention and a method of fabricating a living three-dimensional structure.

The invention relates to a cable guide apparatus, wherein the cable guide apparatus comprises: a guide apparatus, a slide which is movably guided in the guide apparatus, a deflection roller which is connected to the slide, a first tension weight, a cable pull apparatus which connects the first tension weight to the slide guided in the guide apparatus, wherein the connection cable has a free end and a fixed end connected to a connection apparatus and extends over the deflection roller, a second tension weight and a second guide apparatus in which the tension weights are each movably guided, such that the connection cable extending over the deflection roller is preloaded in a first displacement region of the free end by a force generated by the weight force of the first tension weight and is preloaded in a second displacement region of the free end by a force generated by a total of the weight forces of the tension weights.

The invention relates to a material feeding device. The material feeding device according to the invention to be used in a material processing device has a material feeding channel with an output end facing a processing site during operation of the material feeding device, and is characterized in that the material feeding device has at least one microchannel.

The invention relates to a material feeding device. The material feeding device according to the invention to be used in a material processing device has a material feeding channel with an output end facing a processing site during operation of the material feeding device, and is characterized in that the material feeding device has at least one microchannel.

In a three-dimensional shaped object manufacturing device, when a unit is moved in a forward direction, powder is supplied from a first supply portion, a powder layer is formed by a first layer forming portion, a liquid is discharged to a shaping region from a head, and a shaping table is moved in a direction separating from the unit after discharging the liquid is ended and before a second layer forming portion faces the shaping region, and when the unit is moved in a backward direction, the powder is supplied from a second supply portion, the powder layer is formed by the second layer forming portion, the liquid is discharged to the shaping region from the head, and the shaping table is moved in the direction separating from the unit after discharging the liquid to the shaping region is ended and before the first layer forming portion faces the shaping region.

A powder discharge unit for equipping and/or upgrading a device for generatively manufacturing a three-dimensional object by a selective layer-by-layer solidification of building material in powder form includes a powder container for receiving building material in powder form and a filling chamber for filling in building material in powder form into the powder container. The powder discharge unit is configured to fluidise the building material in powder form in the powder container and the building material in powder form in the filling chamber independently of one another.

A powder discharge unit for equipping and/or upgrading a device for generatively manufacturing a three-dimensional object by a selective layer-by-layer solidification of building material in powder form includes a powder container for receiving building material in powder form and a filling chamber for filling in building material in powder form into the powder container. The powder discharge unit is configured to fluidise the building material in powder form in the powder container and the building material in powder form in the filling chamber independently of one another.

The disclosure relates to a powdery filament composition for 3D printing, a 3D printer, and a method of additively manufacturing an object by the 3D printer, and more particularly to a powdery filament composition for 3D printing, which is suitable for home use because it does not produce toxic substances, a 3D printer, the size of which is suitable for home use because it does not require high power energy, high-temperature processing and the like conditions for additive manufacturing, and a method of additively manufacturing an object by the 3D printer.