Learn→CAD Basics CAD Basics A short introduction to CAD drawings, vector geometry and the terms that make 2D fabrication files easier to understand. 01 What is CAD? Understand what CAD means and why a measurable drawing is useful. 02 How CAD represents geometry Compare pixels with vectors and understand paths and closed profiles. 03 Common CAD terms Learn how position, size, scale, units and layers are described. 04 Why clean geometry matters See how small drawing errors can affect later fabrication work.