CATIA | How to Create an Axis System in 1 Minute!

The Axis System in CATIA (typically referred to as the Current Axis System, or CAS) is perhaps the single most foundational element in any design. It's not just a visual reference; it's the mathematical anchor for every piece of geometry you create. Understanding why it's critical is key to moving from simple part design to complex, multi-component assemblies.

The Role of the CATIA Axis System
The Foundation of Parametric Modeling
CATIA is a parametric modeling software, meaning that all geometry is defined by relationships, not just absolute coordinates. The Axis System provides the origin (0,0,0) and the orientation (X, Y, and Z directions) that defines these relationships.