A method for the secondary working of flint tools involving the use of a hard object against a stone core or mass to remove flakes. The roughed-out form of the tool is sharpened and finished by exerting pressure with a bone, antler, stone, or stick on the edge in order to remove small thin chips. By using a short, pointed instrument to pry, not strike, the tiny flakes leave only the smallest scars. As the least violent and most advanced of the methods of working stone, it gave the craftsman the ultimate in control for the removal of materials in the shaping of an implement. Fine-edged weapons, such as daggers, arrowheads, and spear heads, can be produced using this technique. This technique was first widely used in the Solutrean c 18,000 BC and is associated with some New World points.