Original and practical sun glasses can be done by hand, based on the normal rim (even better if it is old — work style of “retro”), and instead of glass to paste into it fine-meshed plastic or nylon mesh chumnogo color. P. IVANOV, Stupino, Moscow region
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THE SUN IN HARNESS
The intricate design shown in the picture, — not that other, as the solar engine, the engine that converts the thermal energy of sunlight directly into mechanical work. It is arranged...
FLAP INSTEAD OF GLASSES
When working with a rotating cutting tool it is recommended to use special protective glasses. Their role can play a makeshift shield-the intake is made of metal strips and thin sheets of Plexiglas.
