There are many ways to keep a ladder from slipping. The easiest “put on” her old sneakers or shoes with a rubber sole.
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IN THE HALL AND IN THE FOREST
For making models are used, the stems of cereals: oats, rye, barley, Timothy and reeds. The FUSELAGE consists of two parts. The first is a stalk of straw Ø 3-4 mm, the second...
Portable Power Station
I propose a design for a gasoline-electric unit (GEU) "Firefly", designed for charging batteries, powering lighting lamps and other DC consumers at 12 V.
I developed this unit three...