Universal cutter, known as the boot knife-Bong, easy to use, but inconvenient to store. If he give such a construction as shown in the figure, in inoperative position it will be just as safe as a pocket knife: folding, hide the blade in the wooden handle.
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ROCKET J. HAROLD
At the world Cup 1978, held in the city of Yambol (Bulgaria) in the class RC raketoplana S-4-D (the maximum mass of 240 g, the total impulse of the propulsion system 10-40 n*s) a...
AN IMPROVED VERSION
Isn't it tempting to make a motor-plow design which has almost no welds! That's why published in the "M-K" № 3, 1985 article "the wheel of veloplugs" on how to build such a mechanism...
