This model illustrates a sphere in sliceform design. For many years we have made such a model using papersheets, but now I wanted to do it faster. It was imagined as plastic sheets with thickness 0,6 mm (3 layers), so around the slits + 0,1 mm extra gap was designed. (Width of slits is 0,8 mm.) It was designed is Tinkercad cutting a sphere with radius 3 cm, so the sidefaces are spherical and not cylindrical. For better visual effect print the uploaded stl file in two different colors. https://www.tinkercad.com/things/5wygvlkwtEI Enjoy it!