Obsidian is surprisingly easy to knap, often simpler than flint. Even old toilets can provide practice material. Unfortunately, the cost of raw rock, especially with shipping, has gone up significantly. It might now run you $3-6 per pound. #knapping #flintknapping

Flint knapping involves direct or indirect percussion. Indirect percussion, using a tool to position another for striking, offers more accuracy in flake removal. Many knappers are happy to teach this skill, seeing it as a craft worth passing on. #flintknapping #craft

Practicing knapping with Johnny chert. The goal is thinning the rock via percussion flaking, which relies on sending shockwaves through the stone to detach flakes. Abrading sharp edges prevents crushing and aids flake removal. #flintknapping #archaeology

Flint knapping using indirect percussion offers a surprising level of control for shaping stone tools. It's a technique that prioritizes accuracy over brute force. #flintknapping #archaeology