Had an old knife blade that I made about 2 years ago. It has had 3 different handles, but I've never really liked any of them, so I took the last one off and the blade has been sitting in my cabinet since. Just for fun, I took it out to the garage and decided to try a 90 degree flex test. Ten flexes so far and no sign of breaking/cracking etc. When it had a handle, it was the best edge holding knife I have. It's also seen use as a throwing knife, and been subjected to at least 2 point first drops from 6 feet into concrete with no damage/chipping.