Now you can try GoSun's breakthrough Vacuum Tube Solar Ovens at the lowest price. Just place this large, family-scale oven in the Sun and it's able to cook or slow boil water. Create your own frame and reflector to increase performance and ease of use.
GoSun's do-it-yourself kit includes:
This is a great idea, but I should point out that I haven't got one yet - just asking a question... Does it come with a cap? I'd imagine that cap will get pretty darn hot. I couldn't see it in the image so figure other people will have this same question too. Or are there instruction on creating this for yourself and appropriate materials?