I have no hat, so I throw a Ghutrah in the ring and a bottle of whisky.
Trying the triangular kinematics with 2 arms (4 pieces)and 4 bearings for the Maslow. http://www.maslowcnc.com/
Turn OFF the volume (I was just playing with the video editor :-)). This concept is known to fail, but I enjoined making it anyway.