Bottom side of arrow shaft maker

( click on picture for an extreme close up. )

To the right side of the stone tool image, you can see; look closely ( click on picture for close view. ) at the partial hole that is drilled on the very edge of the hole. This thin stone line between the hole bored completely through and the partial hole creates the scraping blade edge. The size of the hole on the bottom side ( shown ) tapers from large to smaller size for consistent same diameter size of arrow shafts.