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Simple solar cooker - Printable Version

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Simple solar cooker - ArkadiySwole - 01-16-2020

Can anyone give me a VERY simple plan for a solar cooker that could roast a marshmallow? I can only use a piece of tinfoil that is 30cm X 100cm.u can use an umbrellacover the inside of the umbrella with the tin foil and place your umbrella in the sun and focus the sunlight on the marshmallow.Other related question