Some are long and narrow, like knife blades, and some are fan shaped. The flakes or debitage created from the production of stone implements can be useful for a variety of cutting jobs. Raw obsidian and a finished projectile point. Obsidian is a multi purpose material. From one good corestone, a variety of different tools can be created.
Stone blades on antler or wood handles, attached by sinew.
When a blade becomes dulled from excessive use, the edge can be dressed up by pressure flaking. Pressure flaking creates the finely serated edges found on all sorts of stone tools. An assortment of tools made from deer antlers. Antlers are used either as hammers of pressure flaking tools. The pointed tip of an antler tine, against the edge of obsidian, works well to pop off tiny chips, as in the serated edge of an arrowhead or spearpoint.