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.
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In the days of preparation to the XVII Congress of the Komsomol, the Central Council of VOIR, the Ministry of light industry and the Ministry of education of the USSR adopted a decision...
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Deformed copper or brass wire you can make a perfectly smooth and straight in just a minute. Board hammer in a few nails to pass through them the wire, as shown in the figure and stretch...
