From FreeCAD Documentation
- Select edges of shapes/solids
- Click on or choose Robot → Edge to Trajectory... from the top menu.
- A menu will pop up in the Task panel
- In the top white box there will be displayed the name of the shape/solid present in the scene.
- By selecting edges they will appear with their name in the lowest white box.
- By clicking on Apply the entries "Edges" and "Cluster" will turn green and the numbers beside them will show how many elements were recognized.
- By clicking on OK you will close this dialog.