Stone Tool Making Techniques: Indirect percussion notching

Notches for hafting were sometimes made using an indirect percussion punch.  The punch was set onto the negative flake scar from the prior punch-flake, the new flake was removed and the blank flipped over, and the process was repeated multiple times.  By flaking the same spot on the margin, the notch could be progressively deepened.  

Lost Lake point, Alabama

Lost Lake Point