Parametric Lego Mindstorms Mecanum Wheel 82 mm (iteration 3). The Mecanum Wheel can be printed without any support structures. Needed Parts for building a single wheel: 16x MecanumWheel3_Roller 1x MecanumWheel3_Left (or MecanumWheel3_Right) 8x Lego Axle 4L (length=31.4 mm, PartNr 3705) 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: http://www.thingiverse.com/thing:641377 Depending on how this wheel is being used in a robot, following distance piece might be useful: http://www.thingiverse.com/thing:653738 The wheels in action: https://www.youtube.com/watch?v=YWMyd_zxgvY&feature=youtu.be Final Remarks: