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When labor around the house or doing a car, and then have to deal with the things that need to be cleaned of rust. Fortunately, even the "impassable" substance can be easily removed with anything, if you know how to do it.
1. white vinegar
The vinegar reacts with rust and dissolves it. We leave it to the metal for several hours, then it is possible to start to scrape plaque rusty. If the object is too big, you can pour the vinegar on it, giving time to the etchant. You can also dip them in vinegar, aluminum foil and use it as a brush.
2. Lime and salt
Sprinkle with salt and rusted areas drip on them with lime juice or lemon. Waiting until the mixture will react. This will require 2-3 hours. After that, we begin to clean the subject from rust. This can be used to peel the fruit.
3. Baking soda
Mix water and baking soda as long as the substance is sufficiently viscous for application to the metal. Wait until the etching occurs, then we arm with a brush and remove the rusty patina.
4. Potatoes and soap
Cut a potato in half and put on her slice of soap. Then, three rust potatoes should be occur chemical reaction with rust. Dye etchant for several hours and then sit for cleaning object. If soap is not possible to use with a potato water and baking soda.
5. Oxalic acid
It is worth to warn that this method is dangerous to life and health, so it should be used only as a last resort and subject to safety. First of all, you need to wear rubber gloves and protect the airway. Even in protection should not under any conditions breathing acid vapors.
Now we take and carefully washed out rusty thing with dishwashing liquid. Rinsed and dried for him. Take 5 teaspoons of oxalic acid and 250 ml of warm water. We are making this solution. Omit problematic subject for 20 minutes in the resulting liquid. Then clean with a brush, thoroughly washed out and dry again.
There are many interesting and useful tips. Here, for example, the story of how to use you can use the remnants of cosmetics at home, so as not to send it to the trash to his great disappointment.
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A source: https://novate.ru/blogs/040418/45631/