Dedicated shareware programs explicitly designed to compile visual CAD drawings into perfectly structured PAT code. The Professional Conversion Workflow
When saving your file, choose a legacy format option, such as . Older formats strip away modern, complex metadata that often confuses conversion utilities, leaving only raw geometric coordinate data. Methods for Converting DXF to PAT
If you need to extract a hatch pattern that you see in a DWG or DXF file but don't have the source PAT file for, you can "reverse engineer" it. As suggested by CAD experts, you can WBLOCK a hatched region to DXF, open that DXF in HatchKit, and save the extracted pattern as a new PAT file. This is much more effective than manual recreation. dxf to pat
*Pattern_Name, Pattern_Description Angle, X-Origin, Y-Origin, X-Offset, Y-Offset, [Dash1, Gap1, Dash2...]
A built-in AutoCAD tool. While it does not create a literal standalone PAT file, it allows you to use a DXF block directly as a hatch pattern inside your current drawing. Methods for Converting DXF to PAT If you
Test and iterate
However, when used effectively, this conversion opens up numerous possibilities: developed by Autodesk
Upload the file to a secure online vector converter or open it in a desktop utility (such as DXF2PAT conversion freeware). Set your target scaling limits.
DXF files, developed by Autodesk, are designed to store vector data such as lines, arcs, and polylines in a way that remains accessible regardless of the specific CAD program used. In contrast, a PAT file is a simple ASCII text file containing coordinates and dash patterns that tell software like AutoCAD or Revit how to "fill" a closed boundary. Converting a DXF to a PAT is not merely a file extension change; it is a process of mathematical translation
: Once you're satisfied with the pattern, use the export function ( File → Export → PAT ) to save it. This will generate a .pat file containing the textual definition of your new hatch pattern.
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