Side top quality is whatever: deburring, brushing
https://www.scribd.com/document/1058932948/Leader-Boxes-Constructed-for-Generations-Hand-Fabricated-Copper-That-Doesn-t-Compromise-215768
Side top quality is whatever: deburring, cleaning, and micro-grain sanding prepare surface areas so coatings bond equally and revealed joints check out as fine-tuned, constant airplanes.