Once a projectile point had been shaped into the desired form through the rougher process of percussion flaking, the blade would be sharpened and finely shaped by pressing the point of an antler tine against the edges and carefully removing very small stone flakes. Not only does this process result in a very sharp-edged projectile point but it even gives the pressure-flaked edges an almost rippled appearance, as seen on this Nodena point, for instance.
Museum, Chucalissa, "Nodena Point" (2022). Artifacts. 54.
Stone Tool; Nodena Point; Mississippian