Review on TANSUNG Knife Sharpener: Restore Knives and Shears Quickly with Adjustable Angle Button - 3 Stage Kitchen Chef Knife and Scissor Sharpeners for Various Household Blades by Stacy Sturm

First try went smoothly. Quickly updated my complete blade. But the amount of steel removed worried me. I have not and do not recommend anyone to use great force when pulling a sharpener. The blade was not fully restored, so later I decided to sharpen it again. Something changed and it vibrated a lot when I pulled out the sharpener. Instead of a smooth edge I got a wavy edge. I think one of the grinding blades is loose. Not sure but it ruined my knife. Spend a little more and buy a good set of 3-4 whetstones and learn how to turn a round blade into a razor blade!