Setting you back is more nuanced than I believed; nesting performance, standardizing bend distances
https://storage.googleapis.com/metal-craftsmanship/serving-home-owners/uncategorized/breathing-easy-for-a-century-custom-made-copper-roofing-system-vents-that-keep.html
Costing is extra nuanced than I thought; nesting effectiveness, systematizing bend radii, and batching surfaces can unlock major financial savings without endangering design intent.