I started this frame with various square and flat stock mild steel. The buildings are copper pipe, brass rod and steel. My intention was to create a kind of power generation and distribution center, the center building being the distribution center, and the rotating sphere on the right, with it’s supports and conductors, being the generation unit, and bring it out onto the frame. I’ve also added a small pewter building, by Rawcliffe, next to the tower at the left.