In the context of FDM printing, what is the function of G-code?

G-code plays a crucial role in the operation of Fused Deposition Modelling (FDM) printers by providing a set of instructions that directs the printer on how to move and operate throughout the printing process. This includes commands for movements of the print head, adjustments to temperatures, and control of the printing speed, among other parameters necessary for successful 3D printing.

In FDM printing, a model created in 3D design software is first processed by slicing software that converts the model into G-code. This code includes a detailed set of coordinates and actions that the printer must perform layer by layer until the entire object is completed. Each line of G-code translates to specific movements or actions, essentially serving as the printer's blueprint during operation.

This capability of G-code is critical for achieving the desired quality and accuracy in the final printed object, thus making it an essential component of the FDM printing workflow.