p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post if it helps you get responses.
I'm sorry to hear that you're having trouble exporting to DXF from Adobe Illustrator. It seems you're encountering a limitation related to exporting from Illustrator to DXF, especially when dealing with oversized canvases. Unfortunately, this is a known limitation in Illustrator.
DXF (Drawing Exchange Format) files are primarily used for 2D and 3D CAD (Computer-Aided Design) purposes, and they have specific size and precision constraints. Illustrator will not export very large or oversized canvases to DXF, as it exceeds the capabilities of the format.
To work around this limitation, you can try the following:
If possible, try to reduce the size of your artboards or canvases in Illustrator before exporting. This can sometimes help avoid size-related issues when exporting to DXF.
If your design is too large to fit within the DXF constraints, consider breaking it into smaller sections or artboards. Export each section separately, and then combine them in your CAD software.
If you need to exchange your artwork with CAD software, you might also consider converting it to another format that is more compatible with CAD, such as SVG. Illustrator can export to SVG, which is a vector-based format that some CAD programs can import.
If you have further questions or encounter any specific issues during the export process, please provide additional details about your artwork and the error messages you receive, and I'll do my best to assist you further.