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
FURNITURE? IT’S EASY!
Chair thanks to its "mobility" and flexibility, beyond doubt, an important and interesting part of interior living room. Several chairs can make a variety of ensembles. They can be...
BILATERAL SLEDGE
The usual children's sledge with backrest it is possible to carry only rounded chastyami runners forward. However, it is often necessary to transport the child back forward — then his...
