Hatches

A hatch is a graphic fill pattern used in design and modeling software such as Rhino, AutoCAD, and other CAD-based programs to represent materials, surfaces, or areas within a drawing. Hatches consist of repeating lines, shapes, or symbols that are applied to closed geometry, helping to visually distinguish different elements in plans, sections, and elevations.

Although a hatch file may be named after a specific material or use, it is not limited to that interpretation. A single hatch can represent many different things depending on scale, context, and design intent. For example, the same pattern might be used to indicate ground cover, shading, texture, or material buildup across different drawings.

Hatches are lightweight and flexible, making them an essential tool for maintaining clarity, consistency, and visual hierarchy in architectural and design documentation.