What turns in fibers

After the fibers have been better prepared for further processing by rubbing between thumb and forefinger, the relatively short fibers must be spun into a yarn-like strand.

The fibers are twisted together for this purpose, i. drilled. This rotation ensures the necessary cohesion of the individual fibers and prevents the yarn from coming apart again.

The thickness of the yarn is determined by the number of fibers lying next to each other. During the twisting process, new fibers are tied in at the ends so that the yarn becomes longer.

There are two options when twisting the yarn. With the so-called S-twist, the fibers turn to the left, with the Z-twist, to the right.

The same directions exist when two or more yarns are twisted into a twisted thread, i. E. twisted, become. When twisting a thread, in most cases the direction of rotation of the yarn is reversed. A thread is a lot stronger and more durable than a thread of the same thickness.

As a result of the twist, the parallel yarns are closely connected to one another. The number of twists affects the character of the thread. Fewer twists will result in a loose, soft thread, while numerous twists will result in a hard thread.

The example on the left shows a twisted thread made from two strands of yarn. The yarns were twisted in the Z direction and then twisted in the S direction. The example on the right shows a twisted thread from three strands, which gives the thread or cord a rounder cross-section. In this case, the yarns twisted in the S direction were twisted in the Z direction.

With these techniques, not only sewing threads, but also cords, ropes and ropes can be made. Knots at the ends can prevent the cords from fraying.

A relatively simple method of twisting a piece of thread is to roll it over your thigh. A thread twisted in the Z direction is obtained, which is composed of two yarns twisted in the S direction.

For this purpose, two narrow bundles of fibers are aligned, but they must be of different lengths. Take the ends of these two fiber strands in your left hand and place the two strands in a V shape over your right thigh.

With the palm and thumb of the right hand, the two strands are now rolled down along the thigh. Each of the strands turns in the S direction.

When this movement is complete, release the ends in your left hand and the two strands wrap around each other in opposite directions, i.e. in a Z-twist.

In order to get a long thread, the main thing is to work new fiber strands into the thread before the old fiber strands become too short.

The new fibers are laid along the shorter of the two previous fiber strands and twisted together with this to form a strand.

Then the whole process begins all over again. Take the thread again firmly in your left hand at the end of the Z twist and place the two fiber strands again in a V shape over your thigh. Then you roll them down your thigh as usual, so that both are drilled in the S-direction, etc.

Because the two fiber strands that are being worked with always have a different length, the newly added fibers are never worked into the two strands in the same place. This makes the thread more tear-resistant.