Re-enable backface rendering, objects look really ugly from the inside and if a face is removed, the insides are not visible.
Also, when extruding the face, the diagonal of the old face stays in the same spot. The diagonals that are not extruded should be removed, leaving the inside hollow.
Re-enable backface rendering, objects look really ugly from the inside and if a face is removed, the insides are not visible.
Also, when extruding the face, the diagonal of the old face stays in the same spot. The diagonals that are not extruded should be removed, leaving the inside hollow.