a long thin straight stick with a point and a small flat piece of wood
A hand fire drill set consists of a “hearth” and “drill.” The hearth is a flat board with a small divot along an edge. It is used with a long thin stick, the drill.
The point of the thin stick is set in the divot. The fire-maker rubs the stick between two hands, maintaining pressure downwards by rubbing towards the hearth. The long stick is held either with mouth or feet as the fire-maker rapidly repositioning their hands at the top and does it again. Tiny planks used as hearths usually have several holes. The divots may have notches where embers fall out.