Saving a DWG for the preview
- Save the drawing in AutoCAD 2018 or 2013 DWG format, as files from AutoCAD R13 and older cannot be read.
- Run the AUDIT and PURGE commands and save the file again before uploading it, so no damaged or unused objects come along.
- Bind external references with BIND or eTransmit, otherwise they are missing from the preview.
- Export drawings from AutoCAD Architecture, MEP, Civil 3D and Plant 3D with the EXPORTTOAUTOCAD command, so their special objects become ordinary lines, blocks and text.
- Draw the content in model space, as the preview does not show what is seen through viewports on the layouts.
- Keep the file under 32 MB and save it without password protection.
- Filled areas appear as outlines and 3D solids are not shown, so please upload a PDF of the drawing as well when its appearance matters.
- The original file is never changed and can always be downloaded, even when the preview does not work.
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