There are numerous ways to make current, to the ball of yarn did not run away and not out somewhere. The easiest is to put it in a box, basket, or, as shown in the drawing, just the right size jar.
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THE TIMER FOR THE ROCKET
Easy, reliable and accurate timer — "blue dream" any rakatomalala acting class S3. These models are run for a maximum duration of the flight. And sometimes, once in the upward air flow,...
ON THE WATER FASTER AIRCRAFT
What can you do — we have no way to get the materials, without which, it seems, is impossible to imagine modern models. A thin fiberglass (not to mention the carbon fabric), the specific...
