Primitive Technology Builds Cord and Pump Drills
Primitive Technology · Demo · 8 min · 2016 · YouTube title: Primitive Technology: Cord drill and Pump drill
Why it's here
HN people link it as a satisfying demonstration of hand-powered drills being made from nothing.
What it covers
Primitive Technology shows building a cord drill from scratch and then upgrading it to a pump drill, using only primitive materials like a stone flywheel and cord.