I have Silhouette Cameo and all my files (,svg/.studio) are now dxf files and that was not a problem until I signed up with Ai. How do I fix this as I have thousands of files now in that format?

OK with Illustrator 24.0.2

Erratum,
A 100 mm diameter circle exported from illustrator CC (24.0.2) is opened in Creo Parametric 4.0 (M110) and measures the same 100 mm.

Hello,
Great news, it works fine now.

A 100 mm diameter circle exported from illustrator CC (22.0.2) is opened in Creo Parametric 4.0 (M110) and measures the same 100 mm.

Best regards
Nicolas

Hello,
Units are not correct when exporting DXF files from Illustrator CC.

A 100 mm diameter circle exported from illustrator CC (22.0.1) is opened in Creo Parametric 4.0 (M070) and measures 2540 mm.

My CC options are in millimeters
$INSUNITS in DXF file should be defined to 4 = Millimeters
Actually it is exported with 1 and this is incorrect.

Changing $INSUNITS from 1 to 4 in Notepad is not a sustainable solution !

Default drawing units for AutoCAD DesignCenter blocks:
https://www.autodesk.com/techpubs/autocad/acad2000/dxf/header_section_group_codes_dxf_02.htm

Thanks you for tanking in consideration this problematic.

Best regards

Nicolas Bourgeois

1.Details of your operating system and version of Adobe Illustrator:
I'm working on a proper windows workstation, Illustrator version 2018 (22.1)

2.The steps you were taking when you experienced the issues:
Importing a DXF file from Solidworks, editing this and exporting it in DXF again. When importing and exporting I made sure to select the 'mm' option in the units drop-down menu.

3.Your expected result:
A DXF file still in de mm units

4.Your actual result:
A DXF file in imperial (inch) units. All my files are laser-cut 25,4 times too big.

When I open in Illustrator you can select units so you cannot see the problem. When opening in a different program with no unit selection in the import options it will open in inches by default.
And when I open the file directly from Solidworks (not import and export in AI) It will not have this unit problem.
5.[Optional] Upload your Illustrator file or a video

Should be an easy fix for Adobe. Its annoying to edit the dxf files every time in notepad to INSUNITS 4

Illustrator does not change the insunits value when change the unit when export to a dxf.

Better bug description:
https://forums.adobe.com/thread/2074948

Please fix this asap :-)