A metal ejecting apparatus is disclosed. The metal ejecting apparatus includes a nozzle orifice in connection with the inner cavity and configured to eject one or more droplets of the liquid metal printing material, a float in contact with a surface of the liquid metal printing material, where the float is buoyant within the liquid printing material, and a filament attached to the float on a first end and attached to a level sensing system on a second end. The level sensing system may include an ultrasonic sensor, a visual sensor, a mechanical force sensor, a laser sensor, or a combination thereof. A method of sensing and controlling a level of liquid printing material in a metal jetting apparatus is also disclosed.

A three-dimensional (3D) metal object manufacturing apparatus has a build platform heater that is configured with a plurality of temperature sensors and heating elements distributed throughout the heater. The signals generated by the temperature sensors are monitored by a controller and when one of the signals is outside of a temperature range around a temperature setpoint for the heater, the controller adjusts a PWM signal operating a switch that connects the heating element corresponding to the temperature sensor that generated the signal outside of the temperature range. The temperature sensors and heating elements are distributed in a plurality of cells that border one another in a contiguous pattern.

A method for operating a printer can include placing a first print material into a supply reservoir of the printer. The method also includes placing a second print material into the supply reservoir to combine with the first print material to form a diluted print material. The method also includes causing the diluted print material to exit the supply reservoir. Another method for operating a printer includes adding a first print material having a first melting point to a supply reservoir at a first rate. The method also includes adding a second print material having a second melting point to a supply reservoir at a second rate. The method for operating a printer also includes allowing the first print material and the second print material to combine to form a diluted print material. A printing system is also disclosed.

A method for operating a printer can include placing a first print material into a supply reservoir of the printer. The method also includes placing a second print material into the supply reservoir to combine with the first print material to form a diluted print material. The method also includes causing the diluted print material to exit the supply reservoir. Another method for operating a printer includes adding a first print material having a first melting point to a supply reservoir at a first rate. The method also includes adding a second print material having a second melting point to a supply reservoir at a second rate. The method for operating a printer also includes allowing the first print material and the second print material to combine to form a diluted print material. A printing system is also disclosed.

A method for operating a printer can include placing a first print material into a supply reservoir of the printer. The method also includes placing a second print material into the supply reservoir to combine with the first print material to form a diluted print material. The method also includes causing the diluted print material to exit the supply reservoir. Another method for operating a printer includes adding a first print material having a first melting point to a supply reservoir at a first rate. The method also includes adding a second print material having a second melting point to a supply reservoir at a second rate. The method for operating a printer also includes allowing the first print material and the second print material to combine to form a diluted print material. A printing system is also disclosed.

A powder material includes: an atomized powder of an Ni-based alloy containing inclusions, in which a number of particles of the contained inclusions is 100 particles or less per 10,000 particles of the atomized powder. The Ni-based alloy may include at least one additive element selected from Al, Ti and Nb, and the inclusions include at least one of oxide and carbonitride of the additive element.

A powder material includes: an atomized powder of an Ni-based alloy containing inclusions, in which a number of particles of the contained inclusions is 100 particles or less per 10,000 particles of the atomized powder. The Ni-based alloy may include at least one additive element selected from Al, Ti and Nb, and the inclusions include at least one of oxide and carbonitride of the additive element.

A method of additively manufacturing a fire and overheat detection system (FODS) clamp onto a rail tube is provided. The method includes building a base of a clamp body on the rail tube, sequentially building portions of a locking feature and holders of the clamp body on the base and sequentially building remaining portions of the holders and flanges forming grooves at each of the holders of the clamp body on the base.

A metal ejecting apparatus is disclosed. The metal ejecting apparatus includes a nozzle orifice in connection with the inner cavity and configured to eject one or more droplets of a liquid metal may include the metal printing material, and a first sensor pair in contact with an internal surface of a lower portion of the inner cavity. Each sensor pair is electrically connected to a printing material feed system where the printing material feed system is configured to receive an electrical signal indicative of an electrical connection from each sensor pair when the metal printing material bridges the electrical connection between each sensor in each sensor pair. A method of controlling level in a metal jetting apparatus is also disclosed.

A metal ejecting apparatus is disclosed. The metal ejecting apparatus includes a nozzle orifice in connection with the inner cavity and configured to eject one or more droplets of a liquid metal may include the metal printing material, and a first sensor pair in contact with an internal surface of a lower portion of the inner cavity. Each sensor pair is electrically connected to a printing material feed system where the printing material feed system is configured to receive an electrical signal indicative of an electrical connection from each sensor pair when the metal printing material bridges the electrical connection between each sensor in each sensor pair. A method of controlling level in a metal jetting apparatus is also disclosed.