With the help of Phil Blair at Copyfast we now have Cardboard 1. Phil used the file on the Google Cardboard site. It's made of lighter weight cardboard than specified, but it's plenty strong enough; it's a good design. The lenses were the hardest bit, and we tried raiding various toys, loupes and so on, but the ones we used in the end were ground by Independent Lens Specialists in Christchurch. That's an expensive solution, but that's OK for prototype 1; deeper into the project we'll need to find a cheaper source.