stock vector illustration 3d rubic cube images tutorial. 1]-Choose the box and create box with the following size Place the box like me [2]-Convert the box into the editable poly now select the all polygons Now apply the insert polygons with the of 0.62 [3]-Your object should like this [4]-With the selected polygons and apply the bevel polygons with the good following amount as shown below [5]-Your object should like this [6]-With the selected edges now apply the chamfer edges with the amount of 0.33 [7]-Now apply the Turbo smooth modifier with the amount of 3.0 [8]-Apply the materials like me [9]-This is final result