Heating source operation for three dimensional object fabrication

A method for fabricating three dimensional objects comprising:

• calibrating a system to detect a temperature component and a current component by operating a heating source with at least two different calibration voltages and monitoring a color temperature of the heating source and an optical power of the heating source at each of the at least two different calibration voltages;
• performing a three dimensional printing operation while applying a fabrication voltage to the heating source;
• monitoring the fabrication voltage and a current of the heating source during the three dimensional printing operation;
• and
• adjusting the fabrication voltage of the heating source in response to a change in a resistance of the heating source or a characteristic of the three dimensional object, wherein the fabrication voltage is adjusted based at least on the temperature component and the current component.

A non-transitory computer-readable medium comprising a plurality of instructions that, in response to being executed by a processor, cause the processor to:

• calibrate a system to detect a temperature component and a current component by operating a heating source with at least two different calibration voltages and monitoring a color temperature of the heating source and an optical power of the heating source at each of the at least two different calibration voltages;
• perform a three dimensional printing operation while applying a fabrication voltage to the heating source;
• monitor the fabrication voltage and a current of the heating source during the three dimensional printing operation;
• and
• adjust the fabrication voltage of the heating source in response to a change in a resistance of the heating source or a characteristic of the three dimensional object, wherein the fabrication voltage is adjusted based at least on the temperature component and the current component, and wherein the characteristic of the three dimensional object comprises a depth of a layer being fabricated with the heating source.