Today the south end of the existing deck was dismantled so the only way to do any work out is to walk on the beams, they look quite wide until you start walking then they seem quite narrow really. This feels like a milestone as the main beams are ready for the joists to be nailed down. To get an idea of how hard the timber in the main beams is I try to hammer a nail into an offcut - no chance. The nails are 6mm diameter so I try a 4mm pilot hole, still no chance; they need a 5mm pilot hole so I go and buy two 5mm twist drills, they need to be 200mm long as the nails are 150mm (6 inch) long.