Instructables
Picture of Cardboard Box Solar Oven
Cardboard box solar ovens make a great summer project for the family. Not only are they fun to make, but they are also fun to make food in. You get to use an all natural souce- the sun!

Many things can be cooked in them. Hotdogs, English muffins just to name a few. It may take a little longer to cook with them but they sure are worth it in the end.

 
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Step 1: Materials.

Things you will need:
1) Cardboard box - I used an old rollerblade box
2) Aluminum foil
3) Nontoxic glue or tape - I used Scotch Magic Tape 810
4) Black construction paper - I didn't have any of this so I used some black cloth
5) Plastic wrap
6) A pencil
7) Scissors
8) Permanent Marker
9) Grill rack to put the food on

Step 6: Cover outside with black cloth.

Picture of Cover outside with black cloth.
Cover the front of the box with the black cloth or construction paper. This helps the box to absorb more heat. Secure with nontoxic glue or tape.
triumphman2 years ago
Do you have a thermometer to make sure the temp.is high enough to kill any bacteria ?
Kruegem3 years ago
now if you could find a way to incorperate high explosives........
wow. it's great idea.
sclausson3 years ago
If you want the oven to get hotter faster and retain that heat longer then find a box that is longer, deeper and wider. Set your already made oven inside the larger box with insulating material surrounding it. Use tape and strips of cardboard to seal the inner box to the outer box. This will make a good retained heat cooker if the clouds appear. Just cover with a blanket or sleeping bag. Happy cooking
Kay Schmidt4 years ago
":Let them cook for a couple of hours" Seriously? That seems like a long time for something I can cook in micro in a minute or so. I'm looking for something in which to cook cake or cookies, biscuits -- I know, all are good for me! Can you give me an idea of times for such foods? Thank you for posting. It's an idea I've been interested in for a long time.