Thin-walled tube of soft metal when you try to bend often creased. To avoid this, they are usually pre-stuffed with sand.
With the same purpose, you can use another method: navit on the future site of bend copper or aluminum wire – turns will not allow the tube to wrinkle at the bend.
The same result can be achieved using a suitable inner diameter of the spring.
Recommend to read
THE MOST ELEGANT
Flying boat MDR-6 (Che-2). So say the historians of aviation, Soviet flying boat MDR-6 design Igor V. Chetverikova was one of the most elegant production of the Soviet seaplanes. Its...
SPRAY WITH “FROG”
Pollinate the plants IPI to paint a surface using a spray gun. However, instead of the regular "pear" connect foot pump-"frog" — the efficiency will increase several times.
