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The warp threads that form the braid are wound around weighted bobbins called tama (lit. ' egg '). [1] Tama were once made of clay [when?], but now are most commonly wood filled with lead. The weight of the tama maintains even tension on the warp threads, and is balanced by a bag of counterweights called omori [1] that is attached to the base ...
A braid. A braid (also referred to as a plait; / p l æ t /) is a complex structure or pattern formed by interlacing three or more strands of flexible material such as textile yarns, wire, or hair. [1] The simplest and most common version is a flat, solid, three-stranded structure.
This shield is usually covered by an outermost layer of the cable. Common types of cable shielding can most broadly be categorized as foil type (often utilizing a metallised film), contraspiralling wire strands (braided or unbraided) or both. [2] A longitudinal wire may be necessary with dielectric spiral foils to short out each turn. [1]
The shield might be just two braids, but it is more common now to have a thin foil shield covered by a wire braid. Some cables may invest in more than two shield layers, such as "quad-shield", which uses four alternating layers of foil and braid. Other shield designs sacrifice flexibility for better performance; some shields are a solid metal tube.
Patterns used in sand casting may be made of wood, metal, plastics or other materials. Patterns are made to exacting standards of construction, so that they can last for a reasonable length of time, according to the quality grade of the pattern being built, and so that they will repeatably provide a dimensionally acceptable casting. [3]
Bobbin lace may be made with coarse or fine threads. Traditionally it was made with linen, silk, wool, or, later, cotton threads, or with precious metals. Bess of Hardwick bought red silk, gold, and silver thread for making "bone lace" in 1549, the earliest English reference to this kind of work. [13]
1925 braiding machine in action The smallest braiding machine consists of two horn gears and three bobbins. This produces a flat, 3-strand braid. A braiding machine is a device that interlaces three or more strands of yarn or wire to create a variety of materials, including rope, reinforced hose, covered power cords, and some types of lace.
Another kind of scoubidou thread is supple, round, and hollow plasticized PVC tubes usually about 80 centimetres in length. They are sold in various colors, sizes, and types, and are used to make items by binding them together with knots. On account of their elasticity and hollow cross-section—which enables them to collapse and deform when ...