The pump drill was a useful, primitive tool that gave a consistent performance for making small, round, conical holes. Holes were drilled into bone, shell, wood, or soapstone with this device. The four main components of the pump drill were: 1) the vertical spindle, 2) the horizontal crosspiece, 3) the flywheel weight, and 4) the drill bit. In the workshop, the pump drill will be made from wood, a leather thong, a clay or soapstone flywheel, sinew, and a knapped, chert drill bit. A properly ...
