Adjusting the way you think about sharpening! Introducing the innovative new manual adjustable knife sharpeners from Edgeware. Designed in the USA by Smith’s a leader in sharpening for over 125 years. Edgeware developed this sharpener to fill the need of sharpening a knife back to its original sharpening angle. Why sharpen a knife to its original angle? It’s important to do so, to prolong the life of the knife by removing less metal, while creating an extremely sharp edge.