Side top quality is every little thing: deburring, brushing

https://www.scribd.com/document/1041762894/Cupolas-with-a-Century-in-Mind-The-Instance-for-Hand-Fabricated-Copper-Craft-224458

Edge quality is whatever: deburring, brushing, and micro-grain sanding prepare surfaces so finishes bond equally and subjected joints review as refined, continuous planes.