Another functioning part makes up the very intricate and devilish blocking arm. After much designing and work another engineering break through was made. Once extended a box covers the opponents ring holder. The first picture is of the arm system. It is made up of an acrylic arm inside a metal tube.
Rubber bands pull the acrylic arm out of the metal tube.
The second picture shows the base of the system. The arms are hinged at the bottom to the green squares. The motor has a string attached to it to the sliver pin in the front of the picture. This pin holds up the arms against gravity and the tension of rubber bands. The third picture is the arm pin.