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
SEMI FOLDING TABLE
If the kitchen area in the apartment or in the country is small, then a table for folding it is preferable that, in the period between Breakfast and lunch or lunch and dinner he would...
MAGICAL TRANSFORMATIONS OF PAPER
His appearance in the editorial was met with a, frankly, no enthusiasm; preliminary telephone conversation were no signs, it seemed, nothing sverhinteresnogo. Homemade paper? Well,...
