Hollow Cube Set

Ever wanted to make a hollow cube? Maybe hide something inside a wall cubes, but without anyone noticing? Now you can! I present you: Hollow Cube Set!
I know there is already an attempt to make cube-like walls jbskier13's "SUPERwalls". This is better in several ways. Hollow Cube Set has 10 bricks and 3 baseplates that are needed to make a hollow cube. On the outside it looks almost perfect. There's only the matter of 4 visible lines on the two sides of the cube, as seen in the second picture. But from the front and top, it looks identical any cube (The first picture). Bottom is not perfect either, the edges of the baseplate can be seen clearly. Inside of the cube is nearly perfect, you only need to plant few bricks to support the top baseplate of the cube (The third picture).