From FreeCAD Documentation
- Activate target body (body to receive shape binder object).
- Press the Create a shape binder button.
- Press either the Object button or the Add geometry button.
- In the 3D view, select the object or geometry to copy. Object will select the whole body; Add geometry will select any element (vertex, edge, face).
- To remove selected geometry, press the Remove geometry button and select the geometry in the 3D view. To cancel, press the button again.
- Alternatively, the Body to copy can be selected before launching the Shape binder command.
- Press OK.