It would be good to have a set of different blades to the hose for irrigation, including end nozzle in the form of a slot: it has its advantages. And most importantly — this is easy to do from the existing tubular scraps. It is enough to insert one end of the tube a metal wedge and pound it in with a hammer: get the desired slit opening, the amount of which will depend on the thickness of the wedge.
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In the summer of 1932 on the initiative of H. H. Polikarpov, who worked at the Central design Bureau began development of a promising fighter-monoplane with retractable landing gear. In...
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Just note - it's not my idea, I offer only the version of her performance. Came across this idea in some military magazine. The conversation was about the Mat-foam: "...However, such...
