Twin Rail Mobius pendant with balls! - 3D printed metal @shapeways

Info and purchasing: I designed this pendant, I call it Twin Rail Mobius - with balls! To buy the pendant, please visit you will also need to obtain some (upto 31) 6mm (1/4“ works too) balls Its a kind of kinetic math art double möbius (mobius or moebius depending how you spell it) band or strip like structure with rails forming a continuous double loop ring track for ball bearings to travel around. I bought some 6mm chrome ste