This knife blade is made from flint and sometimes these knives had wooden handles. Knives like this were often used to cut papyrus into strips so that you could make paper. Flint is very hard, and you can chip away at the edge of it to get a cutting edge. Egyptians used flint to make the sharp edges on the blades of their scythes. They used scythes for cutting down wheat which they grew on the flood plains of the Nile.