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Minimun Solar Box Cooker

It is a simple box cooker, one of the simplest could be say, and it doesn’t require a hard work to do it and it’s cheap. Besides, it is a very usefull and strong solarcooker, it works very well.
Material.
Two cardboard boxes, about 30cm x 30cm, one must be more little than the other, not much, with 2.5 cm of difference is enough.
One sheet of cardboard to make thelid (About 4 to 8 cm).
Aluminium foil.
One flat-black spray paint or one small jar of tempera paint.
Glue.
One Reynolds Oven Cooking Bag.

Instructions.
Fold the top flaps closed on the outerbox and set the inner box on top and trace a line around it onto the top of the outer box, Remove the inner box and cut along this line to form a hole in the top of the outer box .
Decide how deepyou want your oven to be. It should be about 2.5 cm deeper than your largest pot and about 1 shorter than the outer box so that there will be a space between the bottoms of the boxes once the cooker isassembled. Using a knife, slit the corners of the inner box down to that height.
[pic]Fold each side down forming extended flaps . Folding is smoother if you first draw a firm line from the end ofone cut to the other where the folds are to go.
[pic]Glue aluminum foil to the inside of both boxes and also to the inside of the remaining top flaps of the outer box. Don't bother being neat on theouter box, since it will never be seen, nor will it experience any wear. The inner box will be visible even after assembly, so if it matters to you, you might want to take more time here. Glue the topflaps closed on the outer box. Place some wads of crumpled newspaper into the outer box so that when you set the inner box down inside the hole in the outer box, the flaps on the inner box just touchthe top of the outer box . [pic]
Glue these flaps onto the top of the outer box. Trim the excess flap length to be even with the perimeter of the outer box.
Finally, to make the drip pan, cut a...