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  • Jensen Interceptor


    The Jensen Interceptor is a Grand touring car which was hand-built at the Kelvin Way Factory in West Bromwich, near Birmingham in England, by Jensen Motors between 1966 and 1976. The Interceptor name had been used previously by Jensen for the Jensen Interceptor made between 1950 and 1957 at the Carters Green factory. Jensen had extensively used glass-reinforced plastic for the fabrication of body panels in the preceding two decades, but the new Interceptor saw a return to a steel body-shell. The body was designed by an outside firm, Carrozzeria Touring of Italy, rather than the in-house staff. The early bodies were built in Italy by Vignale, before Jensen took production in house, making some subtle body modifications.

  • Natural dye


    madder root, Colonial Williamsburg, VANatural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The majority of natural dyes are vegetable dyes from plant sources—roots, berries, bark, leaves, and wood—and other biological sources such as fungi and lichens. Archaeologists have found evidence of textile dyeing dating back to the Neolithic period. In China, dyeing with plants, barks and insects has been traced back more than 5,000 years. The essential process of dyeing changed little over time. Typically, the dye material is put in a pot of water and then the textiles to be dyed are added to the pot, which is heated and stirred until the color is transferred. Textile fibre may be dyed before spinning ("dyed in the wool"), but most textiles are "yarn-dyed" or "piece-dyed" after weaving. Many natural dyes require the use of chemicals called mordants to bind the dye to the textile fibres; tannin from oak galls, salt, natural alum, vinegar, and ammonia from stale urine were used by early dyers. Many mordants, and some dyes themselves, produce strong odors, and large-scale dyeworks were often isolated in their own districts.

  • Gas tungsten arc welding


    GTAW "TIG" Welding demonstration.Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) welding, is an arc welding process that uses a non-consumable tungsten electrode to produce the weld. The weld area and electrode is protected from oxidation or other atmospheric contamination by an inert shielding gas (argon or helium), and a filler metal is normally used, though some welds, known as autogenous welds, do not require it. A constant-current welding power supply produces electrical energy, which is conducted across the arc through a column of highly ionized gas and metal vapors known as a plasma. GTAW is most commonly used to weld thin sections of stainless steel and non-ferrous metals such as aluminum, magnesium, and copper alloys. The process grants the operator greater control over the weld than competing processes such as shielded metal arc welding and gas metal arc welding, allowing for stronger, higher quality welds. However, GTAW is comparatively more complex and difficult to master, and furthermore, it is significantly slower than most other welding techniques.

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