The Design: Some final tweaks still need to be made. designed in simple and free Sketchup. Materials :- high quality wood ply. and some bits of acrylic with metallic round hole mesh inserts. A package arrives: Lots of HDD cages! some new tools required for the job. A jigsaw, some c-clamps and an assortment of blades. Trying out the jigsaw: i like it.