Red Seal Machinist Practice Exam 2026 – All-in-One Comprehensive Guide to Exam Success!

G-code refers to a type of programming language used for CNC (Computer Numerical Control) machines. It is the standard language that tells the machine how to move, what tools to use, and how to perform various operations such as cutting, drilling, and milling. G-code consists of various commands and parameters that control the precise movements and actions of the machinery, allowing for automation and high precision in manufacturing processes.

The significance of G-code lies in its ability to provide specific instructions based on geometrical and operational data, facilitating complex machining tasks that would be difficult, if not impossible, to accomplish manually. This programming language is essential for machinists and operators to understand, as it directly affects the productivity and accuracy of CNC operations.

Understanding G-code is fundamental for anyone working in the machining field, as it serves as the bridge between the design of a part and the actual physical machining process.