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
RACK SCREWS
There are various designs of towel racks in the kitchen or Kanna and. One of them is a vertical series of levers, threaded plastic end caps on the rod of the bracket, screwed to the...
FOUR FEET FIVE ITEMS
How many feet in the sum can have four chairs and one table? Four! — say the British designers, offering this an original design "dining sets". Its main element is a four-legged frame —...
