What is the purpose of G-code in FDM printing?

In the context of Fused Deposition Modelling (FDM) printing, G-code serves as the essential set of instructions that directs the 3D printer on how to operate during the printing process. This code contains detailed commands that specify everything from the movements of the print head and the temperature settings of the extruder to the speed of the print and the specific patterns of material deposition.

Each line of G-code corresponds to specific actions, such as moving to a particular coordinate, starting or stopping the extrusion of filament, and adjusting temperatures. The printer reads this code sequentially, allowing for precise control over the printing process, which is crucial for producing accurate and high-quality prints.

The other options do not reflect the primary function of G-code. While printer calibration may be necessary before starting a print, it is not directly related to the primary role of G-code. Analyzing print quality after printing occurs post-process and is not a function of G-code. Generating 3D models is an entirely different stage of the workflow, focused on design rather than the operational control needed during the printing phase. Thus, the role of G-code in facilitating the precise movements and actions of the printer makes it fundamental to the success of any FDM printing endeavor