The craft is collective: designers, engineers, and fabricators repeat on models, refining joints, finishes

https://tysonzymk871.yousher.com/hand-fabricated-copper-cupolas-what-architects-know-and-time-verifies-1

The craft is joint: engineers, engineers, and makers iterate on models, refining joints, finishes, and tolerances up until classy ideas come to be buildable steel.