Lesson description
After logging in, the full lesson text and a set of review questions will be available to help you check your understanding of the topic.
Lesson 04
Dangers of Accidentally Mixing G90 and G91
Part of section: Program Operating Modes: G20, G21, G90, G91
This lesson explains why accidental mixing of G90 and G91 is dangerous: identical coordinates mean different actions in different modes, errors can accumulate across multiple lines, and the Z-axis requires special caution to prevent collisions.