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my cooler is just a cardboard box that got wet(to not to use ice cubes)that I wrapped in aluminum foil. with a lid that is just foil.

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-http://www.instructables.com

-www.wikihow.com

-www.dkfindout.com

-www.physicsclassroom.com

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temp. in compact cooler- got soggy in testing

temp. in store bought cooler- no go

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My idea was to have a cylinder that is 6 inches in diameter. With the cylinder with 12 in high walls opening and closing lid.
This is my idea for the walls

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1. Dry air

2. Foam

3. Paper

4. Glass

5. Plastics

6. Fiberglass

7. Polyurethane

8. Aluminum lining

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How can I make a small container that can keep items cold for as long as a regular cooler.

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Main Idea: a compact cooler