We have some chert about, but it's tough to work unless one gives it some heat treatment. We do not have flint here in the northwest, but I've worked a bit when I visited some folks back east. It too needs some heat to enhance it's workability.
Flint and chert make for tougher points than obsidian. Obsidian is the easiest of materials to work, and can generate the sharpest of edges. Cuts from obsidian are so clean that blood has a difficult time clotting on the smooth surfaces. Even small knicks will bleed for a half hour or so. The cuts disrupt so little tissue though that they are near healed in about 36 hours.
Last edited by 1minute; 05/18/11.
