The craft is collective: architects, engineers, and producers repeat on prototypes, refining joints, finishes

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

The craft is joint: designers, designers, and fabricators iterate on prototypes, refining joints, coatings, and resistances till stylish ideas come to be buildable metal.