Octahedra loop

8 linked octahedra with the points protected by balls make a soothing fidget to turn, easy to carry, and I love the starry shape. It works well in special filaments. The black sparkly one is printed in a temperature sensitive one. I like it best at about 75% size. It will work fine still at 50%. In silk filament it needs a full set of tree supports; in plainer ones I can get away with only critical ones. Funnily, this is what I was aiming for when I started putting together the cube loops! It took me quite a while to figure out that the original octahedron model had edges too thick to work in this configuration.