Slowly bring bare ends of two pieces of wire together. A spark will jump across just before they touch. Aim it at tinder. A small piece of cloth with a little petrol is best tnder for this.
FIRE BOW: The friction of a hardwood spindle rotated on a softwood base produces wood-dust tinder, then heat. Both spindle and base must be dry.
Keep spindle upright and steady, and bow strokes even. It helps to kneel with one foot on baseboard. Carry on bowing until a glowing tip drops on to tinder. Blow on it gently to ignite.
HAND DRILL: A variation on the fire bow
Cut a V-shaped notch in hardwood baseboard. Make a small depression. Use stem of hollow softwood with sofi pith core for spindle. Roll the spindle between the palms of your hands, running hands down it as you go to press it into depression.
When friction makes the spindle tip glow red, blow gently to ignite the tinder. Put a pinch of sand in spindle hole to increase friction.
FIRE PLOUGH: Cut a straight groove in a softwood base board and then plough the tip of a hardwood shaft up and down it. This produces tinder, then ignites it.