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
THE BENCH IN THE HALLWAY
MATERIAL: metal rod Ø 4 and 5 mm, cut sheet metal with a thickness of 2 mm, Board thickness 18 mm three-layer plywood, bolts М3Х20 mm, glue for wood, colorless furniture varnish, primer...
INSTEAD OF DRILL — FILE
Working with a file always takes a lot of time, particularly where its course is restricted: in a deep hole, in a curved channel. Here come to the aid of a power drill. Hold its...
