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
TRANSISTOR – LIKE A TUBE
ULF bass reflex on one first transistor. Numerous calculations and experiments to create powerful high-quality low-frequency amplifier has led me to believe that the most promising way...
CHRISTMAS HANDMADE
How rapidly time, dear readers! Last night, I think the "Club house masters" invited you to their new year's housewarming party — and now a small anniversary: it was three years old. How...
