Has anyone considered, or even better, followed through with purchasing a Fresnel Lens solar 'oven'? I'm considering this:
If anyone has researched this, I'd love to hear of any alternative vendors. This guy puts up some very informative information, and his product sounds good, but I have been unable to find anyone else selling Fresnel lenses of this size.
Since I live in San Diego, and the sun is bright at least 80% of the time, this seems like a very inexpensive preparedness tool.
@Irksome - I found a fresnel lens at Staples. It was the size of a notebook piece of paper and sold as a magnifying lens for paper. I bought the plastic lens and a transparent piece of acrylic and sandwiched the lens in the plastic.
I now have cheap way to instantly have fire started during the day time.
Fresnel lenses are extremely powerful and quite impressive.
Wow, did you see that parabolic mirrors by the same seller? You could use those to make a solar forge!
he's got some cool (well, hot) stuff for sale.
I'll be buying the fresnel lens, framed. I'm also thinking of buying a roll of his reflective film. Seems to me that reflecting the sunlight up to hit the bottom of a frying pan on a metal grate would be better for cooking than hitting the food from the top.
Once I get it and play with it I'll post an update.
Hitting the bottom would even out the heat, as it is absorbed and re-emitted by the pan. This would be like cooking something on a stovetop. Coming from the top cooks it directly, like an oven. Different solutions for different applications.