If the flashlight is to strengthen the tin bracket with a motor from a child’s toy, the axis of which is planted miniature celluloid propeller, and connect the motor to the battery of a flashlight, get a portable fan, which could become a mechanical fan and refresh face in heat.
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CASE FOR SOLDERING IRON
...can be made from scrap pipe of appropriate diameter. The case will protect the working part of the tool during storage. S. CHIRIKOV, Tallinn
RAPID HEATING OF THE WATER IN THE BATH
To produce hot water in the bath are often used bak-register on the tube of the furnace (or boiler in the furnace itself) and external tank in the sink. The circulation of water between...
