Deep Funnel Solar Cooker

Finally, I deceided to build myself a solar cooker. I found one guy capable to build it. And then we got the joy of cooking and eating solar made food for the first time! I did not build it myself because I wanted knowledge to rest locally. We did not use any high-tech materials, only cheap metal sheet. Still the temperature went to 239 C in our first attempt. There are still room for improvements.