Abstract: There is disclosed an article which is formed of a solid-phase or liquid-phase sintered product of a metal powder, ceramic powder or glass powder. For manufacturing the article, an extrudable mixture which contains the material powder and a thermoplastic binder is shaped into a continuous filament suitable for use in fused filament 3D printers. The printed object is then invested in plaster or other castable refractory. The invested object is then subjected to heating. The heating process burns off the thermoplastic binder and sinters the powders of metal, glass or ceramic, leaving a pure metal, glass or ceramic object. The extrudable mixture is produced by preparing a material powder, preparing a binder, then blending the material powder and the binder together. The extrudable mixture is then extruded into a continuous filament suitable for use in various 3d printing hardware.

Abstract: An apparatus and a system are disclosed for a head mounted display utilizing fiber optic cables to feed a projection device. The apparatus includes a head mounted display (HMD) that includes a frame supporting at least one projection surface, the frame configured to maintain the at least one projection surface in a position adjacent to and viewable by at least one eye of a user. The apparatus also includes at least one projection device coupled to the frame and configured to project an image onto the at least one projection surface. The fiber optic cable may be coupled at a first end to the at least one projection device, and at a second end to a remote image source.

Abstract: There is disclosed an article which is formed of a solid-phase or liquid-phase sintered product of a metal powder, ceramic powder or glass powder. For manufacturing the article, an extrudable mixture which contains the material powder and a thermoplastic binder is shaped into a continuous filament suitable for use in fused filament 3D printers. The printed object is then invested in plaster or other castable refractory. The invested object is then subjected to heating. The heating process burns off the thermoplastic binder and sinters the powders of metal, glass or ceramic, leaving a pure metal, glass or ceramic object. The extrudable mixture is produced by preparing a material powder, preparing thermoplastic binder, blending the material powder and the thermoplastic binder together. The most preferable extrudable mixture contains 80 to 92% by weight of metal powder, 8 to 20% by weight of thermoplastic binder, and 0.0 to 0.1% unavoidable impurities.