What is "pressure flaking" in the context of flintknapping?

Pressure flaking refers specifically to a method used in flintknapping where a toolmaker applies pressure to the surface of a stone to detach flakes and shape the material. This technique is particularly significant in the crafting of stone tools, allowing for the precise control of the tool's edges. By pushing against the stone with a pointed tool, the artisan creates a series of small, controlled flakes that can refine the shape and sharpness of the object being crafted.

This process contrasts with other methods such as percussion flaking, which involves striking the stone to remove larger flakes. Pressure flaking is essential in producing fine, sharp edges on tools, which is crucial for their effectiveness in various tasks. The other options do not accurately describe this technique; for instance, high heat relates to thermally altering stone, polishing is unrelated to shaping, and layering different stones pertains more to material composition rather than tool shaping.