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
ELECTRIC VEHICLE “IVOLGA”
"Oriole" — so I called built for the son of the electric car. The design idea came to me about two years ago, and much credit for this journal "modelist-Konstruktor". Several months of...
MULTIFUNCTIONAL COMBI
Tractor I built out of assemblies, mechanisms and components of decommissioned automotive and agricultural equipment. The D20 engine, diesel, power of 20 HP transmission—four-speed, the...
