Drills and projectile points from a site often share a similar shaped base, and it is typically assumed that these drills are reworked hafted points. Measurements of triangular-shaped drills and triangular arrow points from an Iroquoian site indicate that, on average, these drills had narrower bases and were thicker than points. Additionally, most preserved point foreshafts from the western United States are too short if used as a simple drill shaft, and most dart and arrow shafts are too long to serve as convenient drill shafts if used with a strap or bow drill. These data call into question the assumption that drills were reworked hafted points at Iroquoian and possibly other sites.
