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Cardboard Oven: An Eco-Friendly Option
biancalauren | April 12, 2009 at 03:29 amby
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The oven is made up of two cardboard boxes that is placed one inside the other and an acrylic cover that traps the sun’s rays. The inner box was painted black while the outer box was wrapped with a silver foil that aids to centralize the heat. This heat was hot enough to boil water, cook casseroles and even bake bread.