Survival Mode

Those seeking to create heat out camping and utilize the firepit]
get a metal military ammo box and run half inch thick copper coil through it up top to a mason jar sealed spout so the hot water will naturally flow back into the metal ammo box and back up through the small mason jar and back down again… then the first side of the copper coil wound up a few times is tossed on the fire and transmits the heat into the coil heating the water for your sled igloo! definitely need this knowledge in alaska.