These images show the design development progression. Originally, the design was going to be a combination book shelf & seat which would be fixed in front of all dorm room windows, but two factors made me change my design: 1) There was going to be more than 1 sheet of mdf to make it - I wanted to challenge myself and work to the 1 sheet as the brief called for and 2) after further study of my dorm room layouts, it became all to clear that the fixed item could not work as many of the dorms were not the same layout and by placing a fixed item in against some windows it didn't allow the remaining wall space to be used efficiently. The following sketches show my thought process of using the solid and void concept of my DDI. Once I was happy with a design, I began calculating the size of the material in terms of thickness as well as a construction joint method. I wanted to use no nails, screws or clue for the connections to somewhat challenge me. In the end I routed 9mm wide x 4mm deep lines into the vertical pieces so that I could slot the horizontal pieces tightly into them. In some areas I couldn't avoid using a little glue for added strength. In the end, I was very please with the result.