If you have an old inflatable mattress, consisting of several independent sections, it is easy to adapt as life jacket for boating. You will have to sacrifice one of the middle sections, making it T-shaped hole for threading of the head. To fix the other slightly inflated section around the torso using the waist belt and extra lacing.
Recommend to read
ROCKETS “CIRCLE”
In the mid-1950s it became apparent gradual lag of the arms of the Soviet army air defense assets from the reached by that time, the capabilities of air attack. Continuous improvement of...
TOOLS-HANDMADE
Good locksmith tool produced by students of the Moscow school № 787 on the lessons of labour from scraps of reinforcing steel and other metal waste. After heat treatment, its strength is...