For any traveler, fisherman and just a person who adheres to an active lifestyle, a thermos is literally indispensable. Especially the need for it is felt in the cold season, when people buy hot drinks just to keep warm. Someone acts smarter and carries them with him in advance. However, this will require a container with low thermal conductivity, which is sometimes impossible to buy.
The only way out is to make a thermos with your own hands. How to do it? This article will tell.
Capacity device
Most people are familiar with the Dewar. It was on his principle that a thermos was created: a container of smaller diameter is placed in a larger container, and a vacuum is created between them by machine, significantly reducingthermal conductivity.
Of course, it cannot be achieved at home, so the finished product will be less effective. In this case, the foil will replace the material medium, and a do-it-yourself thermos (how to make a container for storing liquid is described below) will turn out not much worse than the purchased one.
The easiest way to make what you want is from plastic bottles.
Instructions for creating a thermos
To create a named container you will need:
- two bottles, 500ml and 1500ml respectively;
- sharp scissors;
- stationery knife;
- aluminum foil;
- several sheets of newspaper;
- wide tape.
And now let's figure out how to create a thermos with your own hands - how to make it, for example, from plastic containers:
- Cut out the bottom and neck of the future body, cut the top of the bottle vertically in several places. This is required so that the smaller container fits more tightly into the hole.
- Wrap an untouched bottle (flask) with foil, the glossy side of which should remain inside.
- Wrap it with newspaper sheets so that the container enters the body very tightly, preferably with an interference fit.
- Insert the small bottle into the big one. Return the cut bottom to its place so that the parts overlap. For greater reliability, fasten with 3-4 layers of wide adhesive tape.
- Wrap the case with foil and adhesive tape - this will help to reduce thermal conductivity a little more.
Terms of use
Creating a plastic thermos with your own hands (how to make it, we described in the article) is not difficult. But it is, of course, somewhat specific. When operating, you will have to take into account one simple prohibition: never pour boiling water into a container.
High temperatures are detrimental to this material if it has insufficient density. In this case, the container will undergo severe deformation, and in some situations it can even burst. Thus, the cooled liquid will have to be poured into the thermos.
To avoid this, you should use a glass container as a flask. It withstands high temperatures and has lower thermal conductivity.
Besides, although soft plastic does not break, it is still undesirable to drop it - the material may burst.
How to make a thermos with your own hands from a jar
For lovers of winter walks, this option is just perfect. A thermos made from such a container will keep any solid food hot for several hours. However, it is better not to use this option for storing liquid.
To create this dish you will need:
- plastic jar with lid;
- polyurethane insulation;
- wide tape;
- scissors.
Step by step instructions:
- Cut off a rectangle from the insulation, suitable in size in order to wrap the sides of the can with it. Leave a small allowance, overlap the edges of the canvas. Secure the joint with tape.
- Place the container on the remaining polyurethane, outline it alone. receivedcut the circle and attach to the sides of the future thermos with adhesive tape.
- Do the same with the lid. For better reliability, the connection should be fixed with tape.
That's all - the thermos is ready.
Making a plug
Sometimes, when the native mechanism fails, people have a question: how to make a cork for a thermos with your own hands? For this you will need:
- vices;
- aluminum foil;
- foam;
- food wrap.
The easiest way is to bring an old cork back to life. It is enough just to steam it out, holding it in a vise, and keep it that way until it cools completely. Then it is worth wrapping the plug with foil - this will save it from destruction under the influence of high temperatures.
And to make a new cork (preferably before you make a thermos with your own hands), you need a piece of foam. An element of the desired size and shape is cut out of it, which is covered with cling film to prevent shedding into the liquid.
If a thermos pushes such a cork, then it will be enough to pierce it through with a needle from a syringe. It is advisable to make a hole in the center, otherwise the plug may be deformed.
Conclusion
It turned out to be quite simple to design a container for storing water and food on your own. Of course, you should never forget about its lower efficiency in comparison with the store counterpart and, if possible,spare no expense to purchase it.
But one significant advantage of such a thermos is unchanged: it is not a pity to spoil it, since production takes a little time, and the cost of the container tends to zero.
