Specific treatment methods can generally use files, chamfering knives, emery cloth grinding wheels, etc.

The sharpening of metal edges is common sense and routine in machining. No matter what method (including turning, planing, milling, etc. ) to process a part, all sharp edges must be processed after completion, which is commonly called "chamfering", and of course includes right-angled edges. It is easy to produce corners and burrs, which will bring some trouble to handling and assembly.