Why Sharpen Edge Tools?
For edge tools such as knives, scissors, and chisels to name a few, to work efficiently, the cutting tip of the tool must have sufficient angle and strength to do the job without needing excessive force from the user or where the tool may slip and cause injury.
Sharpening uses steel or stone to remove an amount of metal from the tool to restore the edge to its original cutting shape. This process causes a neary invisible rough edge called a burr which must be removed by honing. Honing usually uses a leather strap or similar material to remove the burr and makes the knife sharpness finer and last longer.
Remember this: A sharp knife is a safe knife. Dull cutting tools require more force to cut, increasing the chance that the knife may slip and cause injury.