Instructables
I made this solar oven from nothing but:
a shoebox (with lid attached, not removavel),
an old winter shirt,
a plastic bag,
some black paper,
two pencils,
and alluminium foil.
 
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Step 2: The ''glass"

To do the glass put some air in the bag and seal it. Now bend it in half and remove some air until it gets about 2cm thick.
Then glue it to the shoebox like the image.

Step 4: The ''mirror''

Picture of the ''mirror''
To do the mirror line the inside of the lid with alluminium foil.

Step 5: The adjuster

To the adjuster glue two pencils and put one of the throw the shoebox's hole. Use it to adjust the mirror  to reflect the sun to the oven.
triumphman1 year ago
well, does it cook anything, or is this theoretical! Show us something tangible.
tgferreira184 (author)  triumphman1 year ago
I put an apple on it around 12 o' clock, in a cloudy day and at 20 o'clock it was almost cooked, but solar ovens, unless hi-tech they are very slow. To show you that solar ovens work, the first was able to melt rock!
Rock ?
tgferreira184 (author)  triumphman1 year ago
yes, basalt!
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