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Two slits have been made into the panel, in which the corners of the two lateral panels
are inserted. This forms a sort of open shell. A black aluminum kettle, wrapped in a transparent, heat-resistant plastic sack, (or placed in a glass bowl so that there is a layer of air between the kettle and
the bowl- see the HotPot at www.she-inc.org) is placed in the heart of the shell where the sun's rays are concentrated.
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