To spend simply a circle on a plane costs nothing with the help of a compass. But what if this line should cover a cylindrical billet? For a rough layout, you can use string or a rubber ring. The marking will be more accurate if the workpiece perpendicular to lower the fluid: boundary wetting will become the desired line. Another option is to wear to the cylinder tube of suitable diameter or wrap it with a strip of paper, foil.
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TAP THE RECEIVER
(Uninterrupted power supply). On the upper floors in apartment buildings, often the water flows from the taps, that is, barely (or not at all) due to inadequate pressure in water supply...
GLIDER IS AVAILABLE FOR BEGINNERS
Model glider, which we would like to tell the readers of the magazine, was built of the most simple and cheap materials. I think that its design will be of interest to novice modelers....
