Converting geometry from a file into a PAT (AutoCAD hatch pattern) file allows you to create custom repeating textures that are lightweight and easy to share. While AutoCAD does not have a single "Save as .PAT" button, there are several reliable ways to achieve this conversion using online tools, plugins, or manual workflows. Top Methods to Convert DWG to PAT
While not a direct "converter," the command (part of Express Tools) allows you to use a DWG block as a hatch pattern. Pros: Built-in, no extra cost. dwg to pat converter
Emerging tools (still in beta as of 2025) are using machine learning to automatically detect optimal tiling boundaries and even suggest pattern repetitions. Some cloud-based CAD platforms now offer one-click “Hatch from Selection” that bypasses the PAT file entirely, storing patterns as dynamic blocks. Converting geometry from a file into a PAT
: Explode any blocks so the geometry is simple and move the pattern close to the origin (0,0) to avoid alignment errors later. Pros: Built-in, no extra cost
A: No. The tool extracts existing hatch objects. It does not create patterns from arbitrary linework.