How to Make a Fresnel Lens Solar Cooker
Old rear projection TV’s use what is called a fresnel lens for their screens, and these lenses can be used to make one hell of a powerful solar cooker. Not only can these lens cook food but they can also start fire, boil water and even melt metal.
What is best of all is you can find one of these lenses free, just look on Craigslist and you will find most people just give them away just to get them out of their house. Making your own Fresnel lens can allow you to cook outdoors in a way you may have never imagined,click the link below to see what a Fresnel lens is and how to use it .