About this 3D model

The original design was made by tjhowse: http://www.thingiverse.com/thing:17514 It was modified by me in 2 ways: It is customizable in the Customizer In this version, you can define a "cutout" for the spirals to build a lighter and more elastic and springy wheel while keeping stability (comparing to a reduced number of spirals) and a big footprint for more grip