I bought the Borg Cube resin kit in 1/13715. It represents the Cube which was seen in Star Trek First Contact. The edge length of the cube is 2743m (= 9000 feet).
The model has a dimension of 20x20x20cm. I added some rods on every side of the cube. I wanted the cube gets more depth. Therefore, I cuted out some parts of the surface to glued them deepened.