Starting fire with an Ice Lens

By using Ice shaped in to a lens you are able to start a fire according to Primitive ways. To do this you need to find some lake or pond water, boil it for 10 minutes and then pour it in to a foil container which is 2 inches deep and freeze it. Once done you need to create the lens shape by making it thinner on the edges and thicker in the middle. Once the ice is shaved in to the right shape you need to smooth it out with the heat of your hands. Once done you can then use sun light shining through it to heat up tinder which will smoke and then should burst in to flames. Sounds cool. Check out the full tutorial over at Primitive Ways.