I don't live in an area where flint naturally occurs, but I did find a few small crushed pieces of mook jasper in the gravel on my driveway. I found a piece about as big around as a quarter, and really thick I normaly would never even atemp a piece like this one was, I didn't even heat treat it. But I decided nothing was impossible, and grabbed my tools. Several hinges, step fractures, and crushed edges later, this is what came out. Billy would be proud! lol