For any traveler, fisherman, or 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 to just keep warm. Someone acts smarter and carries them with them in advance. However, for this you will need to have a tank with low thermal conductivity, which you sometimes do not have the slightest opportunity 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 know the Dewar flask. It is by its principle that a thermos was created: a smaller container is placed in a larger container, and a vacuum is created between them by a machine method, which significantly reduces thermal conductivity.
Of course, at home, it will not work, so the finished product will be less effective. In this case, the material environment will be replaced by foil, and a do-it- yourself thermos (how to make a container for storing liquid, described below) will turn out to be slightly worse than the one purchased.
The easiest way to make the desired of plastic bottles.
Instructions for creating a thermos
To create the named capacity you will need:
- two bottles with a volume of 500 ml and 1500 ml, respectively;
- sharp scissors;
- stationery knife;
- aluminum foil;
- several sheets of newspaper;
- the tape is wide.
And now we’ll figure out how to create a thermos with your own hands - how to make it, for example, from a plastic container:
- At the future case, cut the bottom and neck, in several places vertically cut the top of the bottle. This is required so that the smaller containers fit denser into the hole.
- Wrap an untouched bottle (flask) with foil, the glossy side of which should remain inside.
- Wrap it with newspaper, so that the container enters the body very tightly, preferably with an interference fit.
- Insert a small bottle into a large one. Return the cut bottom to its place so that the parts are overlapped. For greater reliability, fasten with 3-4 layers of wide adhesive tape.
- Wrap the case with foil and duct tape - this will help to slightly reduce thermal conductivity.
Terms of use
Create a plastic thermos with your own hands (how to make it, we described in the article) is not difficult. But he, of course, is somewhat specific. During operation, one simple prohibition will have to be taken into account: never pour boiling water into the tank.
High temperatures are detrimental to a given material if it has insufficient density. In this case, the container will undergo severe deformation, and in some situations it can even burst. Thus, in the thermos you have to fill in the liquid that has cooled down.
To avoid this, a glass container should be used as a flask. It withstands high temperatures and has lower thermal conductivity.
In addition, 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 can
For lovers of winter walks, this option is just fine. 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 liquid storage.
To create this cookware you will need:
- plastic jar with a lid;
- polyurethane insulation;
- wide adhesive tape;
- scissors.
Step-by-step instruction:
- Cut a rectangle from the insulation, suitable in size in order to wrap them on the sides of the can. Leave a small allowance, overlap the edges of the fabric. Secure the connection with tape.
- Put the container on the remaining polyurethane, outline it one. Cut the resulting circle and attach to the sides of the future thermos using adhesive tape.
- Do the same with the cover. For better reliability, the connection points should be fixed with tape.
That's all - the thermos is ready.
Making a stub
Sometimes, when the native mechanism fails, people have a question: how to make a cork for a thermos with your own hands? This will require:
- vise;
- aluminum foil;
- Styrofoam;
- food wrap.
The easiest way to bring back the old cork. It is enough to simply steam it out, holding it in a vice, and hold in this way until completely cooled. 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 making a thermos with your own hands), you will need a piece of foam. An element of the desired size and shape is cut out of it, which is covered with a cling film to avoid shedding into the liquid.
If the thermos pushes out such a stopper, then it will be enough to pierce through the needle from the syringe. It is advisable to make a hole in the center, otherwise the plug may be deformed.
Conclusion
To independently construct a container for storing water and food, as it turned out, is quite simple. Of course, you should never forget about its lower efficiency in comparison with the store counterpart and, if possible, not spare the funds for its purchase.
But one significant advantage of such a thermos is invariable: it is not a pity to spoil it, since the manufacture takes a little time, and the cost of capacity tends to zero.