If a screw is rusty, do not use brute force to re-tighten it. This is labor intensive and time consuming. My hands hurt, but the screw still doesn't move. The old owner of the neighbor's house in Quang Bin taught the trick, and the girls can easily unscrew it! Find out quickly!
1. Cola
Pour Coke directly onto the rusty screw and then wait an hour before screwing it in. You will find it opens with a slight twist without any effort. The main component of a rusty screw is iron oxide, and cola contains a lot of carbonic acid. When they meet together, a chemical reaction occurs and then the rust dissolves. Thus, the screw will naturally be light. twist.
2. Alcohol + white vinegar + detergent
You can make your own cleaning agent, pour the same amount of alcohol, white vinegar and detergent, and then pour a small amount of water into it and mix well. Pour them into the screws, wait a few minutes, and they can be easily unscrewed by hand, without the use of a wrench or screwdriver.
3. Hit hard with a hammer
You can hold the screw with a wrench and then hit the wrench with a hammer or other hard object so that the rusted part of the screw can be loosened. You can also tap on the surrounding nut with a hammer, which can also loosen the nut a bit and make it much easier to screw it in with a wrench.
Don't use brute force to tighten rusty screws, the above 3 tricks can be done, have you learned how to do this?