The craft is joint: designers, engineers, and producers iterate on models, refining joints, coatings

https://www.scribd.com/document/1041762894/Cupolas-with-a-Century-in-Mind-The-Instance-for-Hand-Fabricated-Copper-Craft-224458

The craft is collaborative: architects, designers, and makers repeat on prototypes, refining joints, surfaces, and tolerances till classy ideas end up being buildable steel.