http://ift.tt/253gICF with ABS and smoothed with acetone. Glued together with epoxy. The ball mount allows any cradle to be used.I would have liked to keep it entirely 3d printed, but due to vibration and stress, the plastic kept cracking, so I reinforced the bottom with a piece of metal and used an aluminum rod for the ball mount. http://ift.tt/1Xd685P