Dxf To Pat ✓
: Use the DXFOUT command in your CAD software and save it as an older version (like AutoCAD 2000 DXF) for maximum compatibility with conversion tools.
Most conversion failures happen because the source DXF file contains geometry that the PAT format cannot native interpret. PAT files are built entirely out of straight lines. Follow these rules when drawing your custom pattern in CAD before exporting to DXF:
Let’s say you have a herringbone pattern in herringbone.dxf .
Draw your pattern close to the absolute coordinates origin ( dxf to pat
AutoCAD includes a SUPERHATCH command. While it does not create a raw PAT file, it allows you to use a DXF block directly as a hatch pattern.
Explode all blocks and ensure the pattern consists only of lines or polylines. Do not use arcs or splines , as the PAT format cannot read them directly; they must be converted into short line segments first.
The reverse conversion—PAT to DXF—is also useful. Converting a PAT file to DXF allows you to use custom hatch patterns as editable vector objects in CAD software, which is useful for further editing, sharing, or integrating patterns into larger design projects. Tools like the PAT to DXF Converter from CAD Studio can interpret PAT files and generate corresponding DXF files. : Use the DXFOUT command in your CAD
: Applications like HGEN or PatOut can automate the export of pattern definitions directly from existing drawings. Alternative Methods in AutoCAD
If you have a simple, repeating DXF with only line segments (no arcs or polylines), you can write a script to generate the PAT definition.
For a perfectly horizontal line of dashes and gaps, your code would look like this: Follow these rules when drawing your custom pattern
A PAT file is a hatch pattern file primarily used in AutoCAD and other CAD software to define custom fill patterns. These files contain text-based definitions describing how a pattern should be drawn within a closed area, including line angles, dash lengths, and spacing. PAT files are written in plain text format and can be opened in any text editor, making them surprisingly accessible for manual editing.
: A widely recommended professional tool that imports DXF files and generates clean .pat code.
PAT files are lightweight text files that can be easily shared or added to your CAD support folder for permanent use. Step-by-Step: How to Convert DXF to PAT
