Materials

Small sticks

Tree barks

Knife

Spindle

Flake

Steps

Carve a stick in half to create a hearth board

Use a stone flake to create a divot in the hearth board

Create a notch aiming for the center of the divot

Place small piece of wood under the notch

Place spindle above the divot and start rotating the spindle

Once you get enough coal, take the small piece of wood and transfer the coal on the bundle of tree barks

Place sticks going from small to big ontop of the bundle to transfer energy