Drawing is a manufacturing process for producing a wire, bar or tube by pulling on a material until it increases in length. This is typically accompanied by a thinning out of the material, usually through a reduction in the girth. Manufacturing is the transformation of raw materials into finished goods for sale, or intermediate processes involving the production or finishing of semi-manufactures. ... A wire is a single, usually cylindrical, elongated strand of drawn metal. ... A tube is hollow cylindrical shape. ...

This techniqued has long been used to produce flexible cables of metal by drawing the material through holes of decreasing size. More recently drawing has been used with molten glass to produce high quality optical fibers. In chemistry, a metal (Greek: Metallon) is an element that readily forms ions (cations) and has metallic bonds, and it is sometimes said that it is similar to a cation in a cloud of electrons. ... The physics definition of a glass is a uniform amorphous solid material, usually produced when a suitably viscous molten material cools very rapidly, thereby not giving enough time for a regular crystal lattice to form. ... Optical fibers An optical fiber is a transparent thin fiber, usually made of glass, for transmitting light. ...