Using a strip of cloth, it is possible to screw the screw in any, even remote place.
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As you know, many fans of the game knight battles themselves make for yourself armor, swords, shields and bows. Use a hint how to make a good elastic bow made of two halves of old skis....
LIGHT TELEGRAPH
Someone who knows Morse code or just going to study it, can build a simple device, shown in the figure. On a plywood Board install the battery B and the lamp L of the flashlight. Contactor...