If the empty tube of toothpaste to fill the rear end with petroleum jelly or machine oil, and the tube to make a hole and feed it through the rod from a ball pen, as shown in the figure—get a convenient oil can to lubricate the parts in hard to reach places small mechanisms — such as alarm clocks or electric razors.
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Motorists know that if a car a long time not to use the battery terminals to prevent oxidation must be removed, and the open contact of the battery terminals to isolate. The easiest way...