blade sharpness
Blade Sharpness: How to Test a Knife Edge Properly
Blade sharpness is the width of the cutting apex plus the angle behind it — not how it feels on your arm. A knife can shave hair and still fail on a rope, and a knife that feels dull on skin can sl...
How to Tell If a Knife Is Sharp: 6 Tests That Actually Work
Sharpness is not a feeling, and it is not something you can judge by running a thumb along the blade — that is how people get cut. A knife is sharp or it is not, and the only reliable way to know ...