It took me a while to test because it takes some experience to sharpen. The first time was ok and I watched a lot of tutorial videos. The knife was sharp, but not as sharp as it should have been. After my 4th try I definitely noticed and got used to it. You can see the fold line on my knife where I finally got the angle I needed to get a sharper knife. Cuts paper easily! I definitely recommend this product. I love how easy it is to cut up tomatoes and just about anything! love love love!