Knife edge: Knife edge scissors are made with the balance beam or lever arm fulcrum in the form of a hardened steel "knife edge' wedge; used to minimize friction.
http://www.marthastewart.com/good-things/knife-edge-pillow
Living on a Knife Edge was created in 1981.
edge - pito, fa'atausi'usi'u; edge of the knife - mata; edge of the forest - matavao
Hero edge is a knife company. They make some good tactical black knive/swords.
Marking knives have a steel blade which is sharpened to a knifes edge. The purpose of the knife edge is to sever fibres as the marking knife is drawn over them.
to lock the edge
Sewing with Nancy - 1983 Jackets on the Cutting Edge was released on: USA: 21 September 2008
The sharp edge of the knife has less area than the blunt edge. So we are able to cut easily using less strength with a sharp edge of the knife.
because the edge of the knife is very sharpbut the both sides of the is not sharp.so,it feels differnt.
A tomato knife is a knife that is designed specifically for cutting tomatoes easily without crushing the flesh. The knife has a serrated edge that cuts through the tomato skin with very little pressure.
It seems there might be a typo in your question, but I'll address both possibilities: If you meant "Why does a knife have a sharp edge?": A knife is designed with a sharp edge to efficiently cut through various materials. The sharp edge reduces the resistance encountered during cutting, allowing the knife to slice through with less effort. A sharp knife is not only more effective but also safer, as it is less likely to slip off the cutting surface. If you meant "Why does a knife have a sharpened edge?": The sharpened edge of a knife is created through a process known as sharpening. Sharpening is done to maintain or restore the knife's cutting performance. Over time, the edge of a knife can become dull due to use, and sharpening is necessary to re-establish a keen edge. In either case, the primary purpose of a sharp edge on a knife is to enhance its cutting ability. A well-sharpened knife allows for precise and efficient cutting, making kitchen tasks more manageable and reducing the risk of accidents associated with using a dull blade. Regular maintenance, including honing and sharpening, helps keep a knife's edge in optimal condition.
Hemmed means to sew the edge of a cloth by folding the edge over and sewing it to the cloth.
The steel blade of a knife will hold a sharp cutting edge.