The author finishing of the cap. It was 18ft in diameter.

This disc of fabric was held in place by 16 break threads. They had to be replaced for each flight.
On final deflation the cap was pulled right down to empty the balloon.

 
         
  Finally, when the 16 gores were being joined the situation became very confusing as nothing would lay flat.
There are at least 3 people in this view, and it was easy to get lost. Even conversation was difficult with the constant crackling as the material moved.