Why is obsidian used for so many weapons even though it is very fragile?

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I’ve been coming across videos of people breaking obsidian chunks to make arrowheads but could never find the answer why it could be broken with light hits with a rock, and then not break when in use with said weapon.

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Anonymous 0 Comments

Unless you screw up your aim, it will be hitting soft, easily slicable stuff instead of another rock. Obsidian is very good at slicing soft stuff.

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