With the Drill Doctor drill bit sharpener, you can easily sharpen you bits by first, aligning it, and locking them into place. In order to sharpen them, simply turn the chuck an even number of turns depending on the size of your bit. (Refer to Manual)
The locking system ensures that you maintain the integrity of your tools. The drill bit sharpener also features a "stop" button that is designed to prevent over sharpening of your drill bits.