Edge top quality is whatever: deburring, brushing

https://telegra.ph/Why-the-Toughest-Architects-Define-Copper-Personalized-Elements-That-Prove-Themselves-Over-100-Years-05-22

Side high quality is whatever: deburring, brushing, and micro-grain sanding prepare surfaces so coatings bond uniformly and exposed joints check out as fine-tuned, continual airplanes.