Description:
Basic incredients: some wood, three M8 threaded rods, some M8 nuts, six ball-bearing type drawer-rails.
Stephen built this machine totally by himself, however its not quite simple to get it so it'll be exact. Also note that the wood was hand-sawed, no power tools. Only a standard drill for the wholes and screws.
The Z-axis (vertical) had been removed in this pic to allow us to use it as a drill press for PCBs. Thats why there are some rubber bands are holding the Z-axis up.