If I hit a sticky spot on a point ,I pick up another and work on it for a few minutes then go back to the first and things usually are not sticky anymore These are pieces picked up outa the debitage pile that were too funky to work at the time The long one has a low point in the center that runs most of the length of the flake sorta like re-sharpening a fluted point lots more work to do on these two but it scratched the itch for an hour