Here's a quick tutorial to Blender. Show how to use Gradien Texture to model the earth with slices. The instructions are simple, easy to understand, and can be applied in many cases. Hope it is useful ...

Color gradient filament is fun stuff to play with. It lets you make 3D prints that slowly fade from one color to another along the Z-axis. [David Gozzard] wanted to do some printing with this effect, ...