The key to sharpening any cutting tool is removing the steel at the edge   while maintaining a consistent angle between the blade and the stone.   Spyderco’s Tri-Angle Sharpmaker takes the mystery out of this process   and enables anyone to sharpen a knife effectively with just a few   minutes practice. Its durable ABS plastic base contains keyed holes that   accurately set the stones’ sharpening angles at a 30° (15° each side)   or 40° (20° each side) for sharpening knives. Simply keep the plane of   your knife’s blade vertical and draw the edge along each stone to   sharpen. It’s that simple. For serrated blades, use the rounded edges of   the stones and a slightly looser grip to allow the stone to flow into   the recesses of each serration. The Sharpmaker system includes two sets   of high alumina ceramic stones: a pair of medium-grit (brown) stones for   aggressive sharpening and a set of fine (white) stones for   professional-grade finishing. A set of brass safety rods protects your   hands while sharpening and all components snap into the self-contained   ABS plastic base and lid for easy storage. Every Sharpmaker comes   complete with a detailed instruction book and DVD that guides you step   by step through the process of sharpening knives, scissors, awls, and   many other tools.
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