If the room is cold, and you work at a Desk and do you have cold hands — warm them, here is an unusual mini-fireplace, build which is not particularly difficult. You only need a curved polished metal sheet on a heat-resistant stand, and a bunch of tablets of dry alcohol, familiar to tourists and hunters.
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The Yak-9
Yak-9 became the subsequent development of long-range fighter Yak-7ДИ, appeared in October 1942 and the Yak-7ДИ made two wing tank, reducing fuel capacity up to 320 kg. there were some...
SPRING — ANY
Here's a simple device, which you can use per minute to make any small spiral spring. A u-shaped bracket with the rows of holes and some steel tap wrenches of different diameters — all...
