The craft is collaborative: engineers, engineers, and fabricators repeat on models, refining joints, coatings

https://www.scribd.com/document/1039773992/Finials-That-End-Up-Well-100-Years-of-Copper-Integrity-146161

The craft is joint: engineers, engineers, and makers repeat on models, refining joints, finishes, and resistances up until elegant concepts end up being buildable metal.