The vertical and horizontal planks of the 8.4.1 Bookcase are offset to create a three dimensional composition providing a variety of shelf heights and depths. Created by Dublin-based 8BY4, it’s a furniture range conceived and defined by being CNC cut from sheet material with the goal of minimizing material wastage and ease of assembly/disassembly. The pieces are slot jointed together without the use of glue or fixings and the choice of material is defined by the end user: 10 interlocking planks of 18mm birch veneered plywood are slot jointed together. The bookcase shown uses one 8 x 4 ft sheet of material, however, the use of additional sheets allows the piece to expand in all dimensions.