The craft is joint: designers, designers, and fabricators iterate on prototypes, refining joints, surfaces

https://shed-wiki.win/index.php/Crowning_the_Roofline:_Copper_Finials_that_Verify_Their_Value_Over_a_Century

The craft is collaborative: engineers, engineers, and fabricators repeat on models, refining joints, coatings, and resistances until stylish concepts become buildable metal.