It’s not automatic, you either have to add a second tool which lies about the endmill diameter, or draw in additional geometry and cut thusly. Discussion of the latter at: Adding geometry to cut as a pocket with a finishing pass
It’s not automatic, you either have to add a second tool which lies about the endmill diameter, or draw in additional geometry and cut thusly. Discussion of the latter at: Adding geometry to cut as a pocket with a finishing pass