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

https://foxtrot-wiki.win/index.php/Cupolas_that_Maintain_Their_Assurance:_A_Century_in_Copper_Craft

The craft is collaborative: designers, engineers, and fabricators repeat on prototypes, refining joints, coatings, and tolerances till sophisticated ideas become buildable metal.