If a nut or bolt is heavily rusted, even the best penetrating lubricant will not help loosen it. The problem can only be solved by heating the connection red hot. Absolutely any of them can be easily dealt with if the metal is hot enough. To warm up, you can use a special homemade device made from a microwave transformer.
Materials:
- Welding cable 16-20 sq.mm;
- microwave transformer;
- copper plate.
The manufacturing process of the device and its use
The device is made in an elementary way. It is necessary to remove the secondary winding from the transformer from the microwave oven. Instead, one and a half turns of thick copper cable are wound. The thicker and shorter it is, the better it will be. But a very short wire is also bad, as it will not allow you to work in hard-to-reach places.
Copper electrodes are installed at the ends of the cable. They can be made from a tube or cut from a plate. It is important to make their edges pointed for convenient point pressing.
To use the device, you must connect the transformer to a 220 V network.The electrodes of the device are pressed against the bolt or nut that needs to be heated. As a result, the current passing between them will heat the mount red-hot in a matter of seconds.
Then you need to spray the connection with liquid penetrating lubricant and unscrew it without any problems.
