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
TRIUMPH DOLOMITE-8
English automobile firm Triumph, founded in 1901 in Coventry Austrian immigrant Siegfried Betmenom until 1923 was manufacturing motorcycles. The first car company became TRIUMPH 10/12НР...
AIR BENDS
Young conovici-only pilots rarely taken for the creation of highly complex models. Basically they design a simple and feasible model of universal definition, which are equally...