The DXF will not open in my CAD

Exports are DXF R12 with POLYLINE entities on a single ByLayer layer. That is the most widely readable DXF variant and it opens in AutoCAD 2000 and later, BricsCAD, ZWCAD and DraftSight.

If the file will not open

• Confirm the download completed. A truncated file usually fails at the first entity.
• Check the extension is .dxf, not .dxf.txt. Some browsers rename unknown types.
• Open it in a text editor. A valid R12 file starts with a 0 / SECTION pair and ends with EOF.

If it opens but looks empty

The block may be inserted far from the origin. Use Zoom Extents. The export panel shows the insertion origin in millimetres; if it is large, reset it to zero before exporting.

DWG

DWG export is a Pro feature. If the DWG option is locked, your workspace is on Free.