Prusa i3 Printer Box

Im not a good carpenter, so I thought up an easy way to create a box for my printer:
Attached is all the stl files and a SketchUp file with everything in it - There is a layer in the SketchUp file which contains the parts ready for print.
As far as Im informed - nobody have created a box with such a system yet! - Now its Your turn!
Its made for 5 mm plywood, but the plastic parts holding it together came out of the printer with 4,5 mm spacing - which with some luck fits perfect for the ply