Obsidian atlatl dart point VS beef rib

Using a Chronos 1.4 camera to capture an obsidian dart point impacting beef rib set in gel at over 4000 frames/sec. The result is a bending-initiated longitudinal fracture and extensive crushing. The point initially crushes at the tip, compresses and buckles under the sustained force, and explodes, leaving shards in the rib and basically splitting the point in half. The base remains in the haft with the sinew bindings partly cut through. Obsidian is a sharp but fragile material (P.S. #minecrafters no you don’t really need a diamond pick axe to break obsidian...). More to come from the full length experiment, in which we deploy other dart point materials as well as arrows.