Its really easy to bend the tin, and even better — from a thin sheet of colored metal, but of course not for sending by post. Make at the top, not a bent valve, the opening and hang the envelope on such stud and the wall next to the table, which prepare lessons. He will become a repository for leaves under drafts, notebooks, writing paper and drawing pencils.
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Before there was the drawing tool for finding center of round parts. My version of such a device — shaped ruler, cut from steel plate with a thickness of 2-3 mm. hole is punched on...
AN EXAMPLE TO FOLLOW
Unlike analog, in the boat "Victoria" from St. Petersburg to create an air cushion and propulsive forces (thrust) uses an air screw. This allows the machine to move using both static and...
