Felting Wool
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Written by teddsy2   
Tuesday, 04 November 2008 10:18
About Felt

A selection of 4 different felt cloths.

Kazakh felt yurt

Felt is a non-woven cloth that is produced by matting, condensing and pressing fibers. While some types of felt are very soft, some are tough enough to form construction materials. Felt can be of any color, and made into any shape or size.

Felt is the oldest form of fabric known to humankind. It predates weaving and knitting, although there is archaeological evidence from the British Museum that the first known thread was made by winding vegetable fibers on the thigh. In Turkey, the remains of felt have been found dating back at least to 6,500 BC. Highly sophisticated felted artefacts were found preserved in permafrost in a tomb in Siberia and dated to 600 AD.

Many cultures have legends as to the origins of feltmaking. Sumerian legend claims that the secret of feltmaking was discovered by Urnamman of Lagash. The story of Saint Clement and Saint Christopher relates that while fleeing from persecution, the men packed their sandals with wool to prevent blisters. At the end of their journey, the movement and sweat had turned the wool into felt socks.

For a long time, the economy of what is now Canada was based on the fur trade, the hunting of beaver (and, to a lesser extent, other animals) for the felt industry in Europe. This led to a very basic colonization, organized by fur trade companies, until governmental measures were taken to ensure a real economic and demographic development.

Feltmaking is still practiced by nomadic peoples in Central Asia, where rugs, tents and clothing are regularly made. Some of these are traditional items, such as the classic yurt, while others are designed for the tourist market, such as decorated slippers. In the Western world, felt is widely used as a medium for expression in textile art as well as design, where it has significance as an ecological textile.

  • 1 Manufacture
  • 2 Other uses of felt
  • 3 See also
  • 4 References

Felt is made by a process called wet felting, where the natural wool fiber is stimulated by friction and lubricated by moisture (usually soapy water), and the fibers move at a 90 degree angle towards the friction source and then away again, in effect making little "tacking" stitches. Only 5% of the fibers are active at any one moment, but the process is continual, and so different 'sets' of fibers become activated and then deactivated in the continual process.

This "wet" process utilizes the inherent nature of wool and other animal hairs, because the hairs have scales on them which are directional. The hairs also have kinks in them, and this combination of scales (like the structure of a pine cone) is what reacts to the stimulation of friction and causes the phenomenon of felting. It tends to work well only with woolen fibers as their scales, when aggravated, bond together to form a cloth.

Felting is done by a chemical process in industry. It is also done with special felting needles, which grab individual fibers and drag them against their neighbors, thereby binding them. Felting may also be done in a domestic washing machine on a hot cycle.

From the mid-17th to the mid-20th centuries, a process called "carroting" was used in the manufacture of good quality felt for making men's hats. Rabbit or hare skins were treated with a dilute solution of the mercury compound mercuric nitrate. The skins were dried in an oven when the thin fur at the sides went orange - carrot color. Pelts were stretched over a bar in a cutting machine and the skin sliced off in thin shreds, the fleece coming away entirely. The fur was blown onto a cone-shaped colander, treated with hot water to consolidate it, the cone peeled off and passed through wet rollers to cause the fur to felt. These 'hoods' were then dyed and blocked to make hats. This toxic solution and the vapors it produced resulted in widespread cases of mercury poisoning among hatters, which may have been the origin behind the phrase "mad as a hatter" and the name of the character of the the Mad Hatter in Alice in Wonderland. (The Mad Hatter's character was almost certainly based on someone who was not a hatter and did not exhibit signs of mercury poisoning.) The United States Public Health Service banned the use of mercury in the felt industry in December 1941.

Knitted woolen garments which shrink in a hot machine wash can be said to have felted, but have actually been "fulled". Felting differs from fulling in the sense that fulling is done to fabric whereas felting is done to fibers that are not in fabric form. Modern fulling is an example of how the fibers bond together when combined with the movement of the washing machine, the heat of the water, and the addition of soap.

Cheaper felt is usually artificial. Artificial felt, if made using the wet method, has a minimum of 30% of wool fibers combined with other artificial fibers. This is the minimum required to hold a fabric together with the fibers alone. It would be difficult to achieve a stable fabric by hand at this ratio. All other wholly artificial felts are actually needle-felts.

Loden is a type of felt originally worn in the Alpine regions, which has recently gained worldwide acceptance as a textile for fine and durable clothing.

Other uses of felt

Felt is used everywhere from the automotive industry, to children story telling, to musical instruments all the way to house building. It is often used as a dampener. In the automotive industry, for example, it dampens the vibrations between interior panels and also stops dirt entering into some ball/cup joints. A felt-covered board can be used in storytelling to small children. Small felt animals, people or other objects will adhere to a felt board, and in the process of telling the story, the storyteller also acts it out on the board with the animals or people. Puppets can also be made with felt. While a woven (not felted) fabric is less expensive and more commonly used, felt is used on professional or tournament billiards table to cover the slate surface. German artist Josef Beuys used felt in a number of works.

Many musical instruments use felt. On drum cymbal stands it protects the cymbal from cracking and ensures a clean sound. It is used to wrap bass drum and timpani mallets. Piano hammers are made of wool felt around a wooden core. The density and springiness of the felt is a major part of what creates a piano's tone. As the felt becomes grooved and "packed" with use and age, the tone suffers. Felt is placed under the piano keys on accordions to control touch and key noise: it is also used on the pallets to silence notes not sounded by preventing air flow. Though the ukulele is most commonly plucked, the pick, or plectrum, is made of felt.

Needle felting is a popular fiber arts craft conducted without the use of water. Special barbed felting needles that are used in industrial felting machines are used by the artist as a sculpting tool. Using a single needle or a small group of needles (2-5) in a hand held tool, these needles are used to sculpt the wool fiber. The barbs catch the scales on the fiber and push them through the layers of wool tangling them and binding them together much like the wet felting process. Fine details can be achieved using this technique and it is popular for 3D felted work.

This article has been reproduced under GNU Free Documentation License

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