To secure the various parts often used connection, using the so-called lock nuts. However, you can do without it. For this it is necessary to saw through the nut, as shown, and tightening it slightly to hit with a hammer.
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A simple device for carrying a wide sheet materials are easy to make yourself, having at hand two, tee, four corners and three or four water pipe section.
Surge
In order to ensure the safety of electrical equipment during sudden surges, there are special systems surge protective. They help to avoid breakage and equipment failure. ...
