What are Most Effective Hammerstone Shapes For Knapping?

Choosing the Right Hammerstone Shape

When selecting a hammerstone, consider the type of material and the intended use of the tool. For general-purpose knapping, a flat hammerstone with an area of around 2-3 inches (5-7.5 cm) is ideal. This shape allows for efficient removal of small flakes and can be used for both coarse and fine work. A broad hammerstone, typically with a width of around 2-3 inches (5-7.5 cm) and a thickness of about 1 inch (2.5 cm), is better suited for removing larger flakes and shaping the core. Rounded hammerstones, often with a radius of around 1-2 inches (2.5-5 cm), are ideal for fine-tuning the edge of the tool and can be used for pressure flaking.

Using the Hammerstone in Knapping

To effectively use the hammerstone in knapping, position it at a 45-degree angle to the core, with the striking surface facing the flake to be removed. Use a controlled, glancing blow to strike the core, aiming to remove small flakes and gradually shape the desired edge. The force and angle of the blow will depend on the type of material and the desired outcome, so be prepared to adjust your technique accordingly. For example, when working with harder materials like flint, use a more glancing blow to avoid chipping the core, while softer materials like obsidian may require a more direct strike.