kisolre wrote: ↑
Mon Mar 23, 2020 10:08 am
At least under Windows they have to be renamed first to FCStd.
At least under windows it's very easy to register .FCStd1 files to it's application FreeCAD.exe.
So no renaming is necessary.
Select a FCStd1 file using explorer (context menu)->open with
Select FreeCAD.exe and set checkbox "Always use this app ..."