This badges requires that your goal piece always touches the ground, wall,or wood. Wood must be used as a platform and not just a protective case or connecting the goal piece. There are certain exceptions for when it's impossible:
-when your contraption first starts
-for fourballs, the goal pieces can touch each other and not the ground
Heres to start it off
http://FantasticContraption.com/?designId=6322463