@pdfslug So I contacted Seeed support.
They replied to me:
If the file you want is not here, then we cannot provide it either.
https://wiki.seeedstudio.com/XIAO_BLE/#resources
The thing is that they actually provided the CAD file of the XIAO Expansion Board here (under “Resources”):
https://wiki.seeedstudio.com/Seeeduino-XIAO-Expansion-Board/#resources
So why they did not provide the CAD file of the Studio XIAO nRF52840 Sense,
this I don’t know.
I asked them.
I’ll see what they reply.
But I don’t think they will provide it.