Converting a (AutoCAD Drawing) to a (Hatch Pattern) file is not a direct "Save As" process because a DWG contains geometry, while a PAT file is a text-based definition of repeating lines. Autodesk Community, Autodesk Forums, Autodesk Forum 🛠️ Best Methods for Conversion
If your DWG geometry is too large or too small relative to the 1-unit export limit, the pattern will appear solid or empty. Conclusion
Instead of mathematically calculating line repetitions, a converter allows you to draw your desired pattern visually and export it instantly. Why You Need to Convert DWG to PAT dwg to pat converter
For true PAT generation within AutoCAD, LISP scripts are the most popular and efficient tools. Popular tools like or the legendary MyHatch.lsp / HatchMaker.lsp scripts allow you to draw your tileable pattern within a 1x1 unit square and export it instantly.
Move the geometry near the origin (coordinates 0,0) to prevent alignment errors. Export the selection as a file (ideally version 2000). Converting a (AutoCAD Drawing) to a (Hatch Pattern)
Use the OVERKILL command to delete duplicate or overlapping lines.
Where:
If you are starting with new geometry, follow these steps to ensure compatibility:
: Ensure all shapes are broken down into basic lines or polylines. Why You Need to Convert DWG to PAT
The underlying technology is surprisingly elegant. Here’s the step-by-step logic: