This is the most common method for users who do not have AutoCAD installed locally. It involves converting the geometry into a format that hatch scripts can understand.
Click "Convert." The server will analyze the vectors inside your bounding box. It will then generate a .pat text file. Download this file.
A PAT file (Pattern File) is an ASCII text file that defines hatch patterns for AutoCAD and other CAD software. Unlike image-based patterns (JPEG or PNG), PAT files are vector-based and scale infinitely. They define a "tile" or "unit" that repeats infinitely in the X and Y axes.
A typical PAT file looks like this in a text editor:
*PatternName, Description
45, 0,0, 0,0.125, 0.125,-0.125 dwg to pat file converter online
These numbers define the angle, origin, and spacing of lines. Manually writing this code for complex organic shapes is nearly impossible, which is why we need a converter.
| Tool | Key Feature | Limitation | |------|-------------|-------------| | CADhatch.com | Clean, simple interface; supports DWG/DXF up to 2 MB | Manual boundary setting required | | Convertio.co | Converts DWG to PAT in 2-3 steps | Free tier limited to 100 MB total | | A360 Viewer + HatchKit (hybrid) | Not fully online, but offers cloud-based prep | Requires desktop for final PAT creation |
Note: Truly robust conversion often requires a dedicated desktop tool like HatchKit or AutoCAD’s Superhatch. Online converters excel for simple geometric patterns (grids, brick, hexagons) but struggle with complex organic shapes. This is the most common method for users
Cause: Your tile is not mathematically seamless.
Solution: Use the MOVE command to shift a copy of your geometry by the tile width. If the lines don’t align perfectly at X = TileWidth, you have a gap. Use the CHAMFER or EXTEND tools to fix edges manually before re-uploading.
In the world of Computer-Aided Design (CAD) and graphic design, file formats dictate what you can create. Two of the most critical formats are DWG (the native file format for AutoCAD) and PAT (the pattern file format used for hatches and fills). For architects, interior designers, and landscape architects, converting a custom vector shape from a DWG into a repeatable PAT pattern has historically been a nightmare of manual scripting.
Enter the DWG to PAT file converter online. This tool promises to bridge the gap between precise drafting and seamless tiling. But how do these converters work? Are they reliable? And which one should you use? Note: Truly robust conversion often requires a dedicated
In this article, we will explore everything you need to know about converting DWG to PAT online, including step-by-step workflows, the limitations of free tools, and professional alternatives.
Most online converters will ask you to select the bounding box either by layer name or by clicking on it in a preview window. Ensure the converter recognizes the rectangle as the "Definition boundary."