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
ROLLS-ROYCE SILVER WRAITH
After the Second world war, the firm of Rolls-Royce, specializing in wartime in the production of aircraft engines, has again returned to the production of luxury cars. In 1947, the firm...
LIFT SKIER
Ski sport in our country every year becomes more and more popular, they are fond of both adults and children. It makes no sense to list all its attractive side, enough to give...
