. While a DWG contains complex geometry, a PAT file is a simplified text-based instruction set that tells AutoCAD how to repeat a specific pattern. Autodesk Community, Autodesk Forums, Autodesk Forum Depending on whether you are trying to a pattern from an existing drawing or
Converting a (AutoCAD drawing) to a PAT (hatch pattern) file is a frequent challenge for designers who want to turn unique geometry into reusable hatch fills. While AutoCAD doesn’t have a single "Save As .PAT" button, there are several effective workflows to achieve this—ranging from using built-in Express Tools to dedicated LISP routines . 1. The "Superhatch" Method (No .PAT File Required) convert dwg to pat file
Standard PAT files do not support true arcs or circles . Only straight line segments. Fix: In your DWG, replace arcs with a polyline using PEDIT and the "Decurve" option. Then approximate the curve with short line segments (this increases file size). While AutoCAD doesn’t have a single "Save As
To create a standalone .pat file that you can share or use across multiple projects, a plugin is the most reliable method. Only straight line segments