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
VELOIMPERIA
Diverse and numerous family water bikes, but they all have a major flaw: transport them by land very difficult. Another thing - "ampipe", on land he feels as confident as on the water....
OVERSEAS HEAVYWEIGHTS
One of the most curious facts from the history of shipbuilding the United States of America is that their first armored cruiser in essence was neither domestic development or cruiser...
