A twist-off jar can be very nasty. At the most important moment, such a container refuses to open, which causes a lot of negative emotions. In order for nothing like this to happen in life, you should know and remember simple and effective ways to open "naughty" covers.
1. Gloves and towel
The first and simplest thing to try against a hard-opening can is regular rubber gloves or a towel. Both will help ensure greater adhesion. Often just such tricks are enough to get you to open a can.
2. Knife
If the lid won't give way, you can try using a knife. With it, you just need to knock off the lid. After such manipulation, it will most likely become unusable, but this action is almost guaranteed to get rid of the cover.
3. Hole
An even more radical and desperate way of "opening up". In a lid that completely refuses to succumb to effort, you can simply make a hole. The best thing for this job is (again) a knife. Cut a hole of the desired size and extract the contents. If you wish, you can cut the entire lid off the can. The main thing is to be careful not to hurt yourself.
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4. Use the bottom
Another very effective way is to use the bottom of the can. More precisely, you need to hit them on a flat surface. The blow should not be strong. Most often, one or two will be enough for the lid to "go". The essence of the method is that such a shake organizes a "water hammer" inside the container, which acts on the lid and weakens it.
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5. Hot water
Finally, you can use hot water to open the lid. The “grandmother's” method works especially well in combination with the first one described. Warm water will expand the cover and is more likely to slide off.
Continuing the topic, read about how can meat gained immense popularity in Russia and not only.
A source: https://novate.ru/blogs/151119/52421/