What is g-code?

G-code, short for “Geometric Code,” is a programming language used to control computer numerical control (CNC) machines. CNC machines are automated devices used to produce a wide variety of products and parts with high precision and repeatability. These machines can include milling machines, lathes, 3D printers, laser cutters, and more.

G-code consists of a series of alphanumeric codes and commands that instruct the CNC machine on how to move and operate the tool. Each code corresponds to a specific action or function, such as moving the tool along a certain axis, adjusting the cutting speed, changing the tool, turning coolant systems on or off, and so on.

The G-code language is standardized, but there are some variations depending on the specific CNC machine and manufacturer. As a result, G-code files may not always be interchangeable between different machines.

To create G-code, CAM (Computer-Aided Manufacturing) software is commonly used. This software takes a 3D model or 2D design and generates the corresponding G-code instructions that the CNC machine understands. Once the G-code file is created, it can be loaded into the CNC machine's control unit and the machine will follow the instructions to perform the desired operations or production tasks.

In general, G-code is crucial in the CNC machining process as it allows for precise control and automation, making it possible to produce complex and intricate parts with minimal human intervention.