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
CHOOSE A MOTOR FOR ALS
One of the main problems faced by the Amateur constructor engine aircraft — selection or production of the power plant the necessary power, weight and efficiency. This problem is solved...
ARC IS NOT A HINDRANCE
From the usual construction of the jig saw and hacksaw with tubular curved handle, the blade clamped so that the propyl is limited by the depth of the arc of the holder. However, if the...
