Parametric Rubik's Cube 3x3 (75 mm). Following parameters can be used to vary the dimensions of the cube: size = 75.5; Needed Parts for building a single cube: remark: In case the "size" parameter has been changed, a different screw length will be required. Support structures are needed to print the pieces. The STL's are positioned in the correct position to be printed. 20% infill works fine. It is recommended to use ABS, the assembled cube turns much smoother. It is recommended to drill the small hole of the Cube_MidPiece to a diameter of 3.5 mm and the big hole to a diameter of 7.0 mm (depth = 6.5 mm).