How to use iSTOR Swiss Knife Sharpener

Pull the concave sharpening edge gently along the blade several times without much pressure. Follow the given angle of the blade. Work only with one side of the sharpener and always from the handle to the point of the blade. Hold the iSTOR at an angle 30 to 50 degrees from the blade of the knife. When sharpening Scissors, Secateurs and Pruning shears only sharpen the ground, angled side.

^{This video has no subtitles but just watch how he sharpens the scissors.}