They are made from composites. The moulds are machined. Airliner structures are very conservative. They still use a lot of fasteners, lowering manufacturing an

They are made from composites. The moulds are machined. Airliner structures are very conservative. They still use a lot of fasteners, lowering manufacturing and structural efficiency. There is a lot of room to improve. There is a huge space for innovation in composites. It just takes a lot of time and money to ensure the more modern methods are also durable and safe.