Knife Sharpness Test Guide
5 professional methods to test your knife's edge
1. Paper Test
Hold paper vertically and slice through. Sharp knife cuts cleanly without tearing.
2. Tomato Test
Slice a ripe tomato. Sharp knife cuts through skin with minimal pressure.
3. Thumbnail Test
Gently rest edge on thumbnail. Sharp edge grips slightly, dull edge slides.
4. Onion Test
Dice an onion. Sharp knife cuts cleanly without crushing or releasing excessive juice.
5. Visual Inspection
Look at edge under light. Dull spots reflect light, sharp edges don't.