Edge high quality is whatever: deburring, cleaning

https://www.scribd.com/document/1039869947/Salvo-Metal-Works-and-the-Truth-of-Copper-Personalized-Chimney-Shrouds-that-Endure-183965

Side top quality is whatever: deburring, cleaning, and micro-grain sanding prepare surfaces so finishes bond evenly and revealed seams read as improved, continuous aircrafts.