In this episode I start thinking about the plank fastenings for Tally Ho. Using copper rivets is the strongest and most authentic choice, but they are not available to buy in the size I need. Just as I am trying to work out the smartest way to make the rivets, we receive a mysterious box in the mail, from a fan. Amazingly, someone has custom-fabricated a machine for making copper rivets out of round bar! We also work on making all the patterns for the hanging knees, which will be cast in Bronze at PT Foundry. Matt and David join the team, and get stuck into grinding bronze, and Rosie gets into her stride laminating the patterns. Backtrack is unamused by the baby chicks.