Parametric Lego Mindstorms Mecanum Wheel 82 mm (iteration 2). The Mecanum Wheel can be printed without any support structures. Needed Parts for building a single wheel: Also added are the files with name containing the word "_printable". These files have been slightly modified so that my 3D printer prints them more accurately. The roller's profile has been generated based on following model: http://www.chiefdelphi.com/media/papers/download/2749 Remark: Changes compared to previous design: https://www.thingiverse.com/thing:638687 The production of the wheels: https://www.youtube.com/watch?v=xkOyJ76SO7k&feature=youtu.be The wheels in action: https://www.youtube.com/watch?v=2hp6FCNHvMw&feature=youtu.be For an alternative version (120 mm wheels) of this design see: http://www.thingiverse.com/thing:681259 Almost perfect driving using printed Ninjaflex rollers: https://youtu.be/hm8kRz5gif0