The bow drill consists of a bearing block or handhold, a spindle or drill, a hearth or fireboard, and a simple bow. Other early versions of mechanical drills include the pump drill and the hand drill.
There are seven main components to the bowdrill which are the bow, cordage, spindle, hand socket, fire board, coal catcher, and tinder. Finding the ideal is essential when crafting your bowdrill set. I find that using bone dry wood carries a lot more significance than the type of wood you actually use. But for your reference medium density woods are best like cedar, poplar, willow, and cottonwood.