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
RESCUE DOWEL
If the drilling hole in the concrete wall towards the drill catches a very durable stone, it is even a great tool with a well-sharpened carbide-tipped is powerless: the drill leads to...
WELDING KID
When constructing or repairing equipment, domestic equipment in front of home masters are often faced with the problem: how to cook certain items? Buy a welding machine is not quite...
