The fluting process is among the most technically demanding tasks in all of prehistoric stone knapping.

The knapper — the person shaping the stone — must have shaped the point carefully in previous stages to create the exact geometry needed for a successful flute removal.

The force must be applied at precisely the right angle, with precisely the right pressure, to remove a flake that extends far enough up the face of the point to achieve the desired base thinning.

If anything goes wrong — if the flute removes too much material, or if it runs to the edge of the point rather than up the face — the point is destroyed.