Place the serration nearest the finger guard into the thin end of the cone-shaped hone. Push or pull the serration into the cone, working toward the thicker end, until the width of the serration is barely filled by the cone. Rotate the sharpener for a consistent result. Repeat the process with the same serration, counting strokes and stopping every few strokes to feel for a raised burr on the flat side of the blade. This burr indicates that the serration is fully sharpened. When you feel it, move on to the next serration, which should require the same number of strokes.