But yes, those shards are sharp! I still have that "perfect" piece, I'll have to work on it soon.
I couldn't get any chips to flake off the "edge", the edge just kept moving closer to the center. I tried knapping that, but it didn't go too well (I didn't try that hard though, just used a nail to chip off pieces. I decided that I wanted to try knapping, so I went looking for more, and found some chert. Crabtree have been used in experimental microsurgery with excellent results. Modern obsidian scalpels look nothing like the decorative flint-knapped knives of Neolithic man, often resembling their modern counterparts in everything except for the blade edge, but Green said. Don Crabtree, who suggested possible uses for the blades in modern surgery. The technique of production of these blades was rediscovered 12 years ago by Dr. I never hunted with any of my handmade points, as it's not legal here.Interesting! I found some flint while visiting my grandparents in AZ, a big enough piece for an arrowhead. The finest of these prismatic blades were produced in Mesoamerica about 2,500 years ago. What I've read is that it is so sharp, that it is basically cutting between molecules and so leaves very little mark, or scarring.
I used to cut my hands all the time and they would heal very quickly and with no scars. It produces a cleaner cut and less tissue trauma, which translates to faster healing and less scar tissue. The chipped edges on blades and arrowheads, like the one pictured, can be very sharp, but what's really unreal is just the plain edge of a big flake knocked off a larger block. Obsidian is used in cardiac surgery, as well-crafted obsidian blades have a cutting edge up to five times sharper than high-quality steel surgical scalpels, with the edge of the blade reaching veritable molecular thinness. Flint knapping was a hobby of mine when I was younger.
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