From FreeCAD Documentation
- Select the Tools → Project utility... option from the menu.
- The Project utility dialog box opens.
- Press the ... button to the right of Create project → Source.
- Select the Document.xml file. The command will be automatically find all linked files.
- Press the ... button to the right of Create project → Destination.
- Select a folder where the new project file should be created.
- Press the Create button.
- A new project file with a fixed name, project.fcstd, is created in the selected folder. There is no warning if a file with that name already exists.
- Optionally check the Load project file after creation checkbox.
- Press the Close button to close the dialog box.