This is made up of cardboard and Al foil shaped to reflect maximum sunlight onto a black cooking pot that converts sunlight into thermal (heat) energy. A heat-resistant bag surrounds the pot, acting like a greenhouse. It weighs half a kilogram and folds to the size of a big book for easy transport.
In Vigyan Ashram we replicate this model by using Digital Fabrication.For more info Solar cooker for printing file Solar cooker_final
Step - 1Al pastingAL Paperfinal solar2015-05-14 15.19.432015-05-14 15.22.45