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Homemade Thermos?

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October 29, 20130 found this helpful
Best Answer

Well first you need to get a styrofoam cup and wrap it in aluminum foil then make a glass layer outside with a vacuum that conducts no heat place another layer of metal outside that to reinforce the fragile glass layer and make a cap.

 
November 1, 20160 found this helpful

What if you don/t have styrofoam?

 
May 11, 20170 found this helpful

this is not HELPFUL AT ALL!!!!!!!!

 
Anonymous
May 12, 20170 found this helpful

what if you cant make a vacume

 
Anonymous
January 19, 20180 found this helpful

what if u are not allowed to use meal or vacuum for school

 
Anonymous
March 28, 20180 found this helpful

This was no help

 
November 8, 20130 found this helpful

Styrofoam,
duct tape,
bubble-wrap,
cling wrap,
aluminum foil,
fiber glass,
news paper,
foam,
(etc..)

 
November 8, 20131 found this helpful

Styrofoam, duct tape, bubble-wrap, cling wrap, aluminum foil, fiber glass, news paper, foam, (etc.)

 
Anonymous
February 23, 20180 found this helpful

What materials would be good to use on the outside of the cup?

 
November 22, 20180 found this helpful

i agree, most of those answers were NOT helpful. I assume you do not mean a thermos per se, but an insulated container to carry something hot or cold in....that is easy to do. First, get a liquid container with a tight lid (won't leak). Take some insulating material - newspapers, fabric layers....I find that polar fleece works really well. Wrap your liquid filled container in the insulating material, then place in a bag or other container large enough to contain both. The insulation will keep your hot (or cold) liquid hot or cold for quite some time.

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On a side note, you can improvise a fireless cooker/haybox cooker the same way (I cook in one all the time).
1. Bring the food you want to cook, say rice, to a boil in a pot with a tight fitting lid and no handle that sticks out very far.
2. Boil 10 minutes.
3. Wrap in 3 inch thick layer of insulation (polar fleece, polyester filled quilt, etc)
4. Let it sit - up to 4 hours - the food will finish cooking without further attention or fuel.
5. Open it up, and eat.
I have used the wrap cooker to make many items, just have the food cut in 1 inch pieces, and be sure it boils that 10 min to get it heated thru. My favorite things to cook this way are pre-soaked dry beans/pulses, cut up vegetables (carrots, potatoes, and the like) and stews of meat and cut up vegetables. Its so easy it is embarrassing. And it all uses the same thermos principal.

 
Anonymous
November 4, 20190 found this helpful

THIS WAS NOT HELPFUL

 
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