Blacksmithing
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Wikipedia-Article "Blacksmithing"
- For other uses, see Blacksmith (disambiguation).
A blacksmith is man or woman designing, making and hot shaping metal products, such as wrought iron gates, grills, railings, light fixtures, furniture, sculpture, tools, decorative and religious items, cooking utensils and weapons. Generally, blacksmiths do not work the non ferrous metals (tin, brass, bronze,copper etc.). These require a separate set of skills and require their own specialists. Blacksmiths do not usually make things that are purely decorative in fact most of the time they are highly functional too.
Ferrous metals will rust quickly if not protected with some coating. For interior metalwork it is ok to polish them and treat them to a coat of wax or laquer. Some blacksmiths have their own secret concoctions to give the required finish. Outdoors the steelwork needs to be primed, undercoated and painted. Or a more durable but less environmentally friendly finish is hot zinc spraying or hot dipping.
Blacksmiths work by heating pieces of metal (wrought iron or steel) with a forge until the metal becomes malleable enough to be shaped to a desired outcome via repeated manipulation with a hammer, punch or other tooling against an anvil. Heating is accomplished by the use of propane, natural gas, coal, charcoal, or coke. Modern blacksmiths may also employ oxyacetalene torches and electric induction furnaces as a heating medium. The other reason for heating the metal, other than for increasing its malleability, is for metallurgical purposes. The metal can be hardened, tempered, normalized, annealed, case hardened, and other more exotic processes that change things like the grain structure.
Specific to the craft of the blacksmith, when working with steels, the metal can be heated and then quenched. The purpose of this is to produce rapid cooling to generate specific microstructures in the metal. A quench generally results in steel that is hard and brittle, so a tempering process takes place to increase the toughness of the alloy and reduce the hardness. This involves heating the material to a specific temperature. With most tool steels, this tempering process can be gauged by the appearance of a coloured oxidation tint on the metal surface. Different uses require different hardness and toughness combinations, and so receive different temperings. It is possible to temper different parts of an object to different levels, which is one area where the skill of the blacksmith comes into play. For example, the face of a hammer is often left as a harder material than the main body, giving a blend of the hard wearing face with a resilient and tough tool. Japanese samurai sword makers were particularly adept at making their weapons very hard on the cutting edge while keeping the main body of the blade tough to support the cutting edge in powerful jarring blows.
Blacksmiths work with 'black' metals, especially iron (see wrought iron), while whitesmiths work with 'white' metals (such as tin and lead), although such artisans are more commonly called tinsmiths. The word 'whitesmith' also traditionally refers to a smith who, instead of leaving the finished product black, files and polishes his products to a reflective, or "white" luster. The term 'black' metals arises from the layer of oxides that form on the surface of the metal during heating (called fire scale). The black metals have a dark firescale, whilst the white metals show a light coloured firescale, if any. The art of working with the precious metals (gold and silver, primarily) is known as goldsmithing. The term "Smith" originates from the word "Smite", which means to hit. Thus, a blacksmith is a person who smites the black metals. (The suffix "-smith" has since come to refer to other crafts. For instance, a woodworker is sometimes called a "woodsmith", though hitting wood is only a marginal part of his craft.) In recent years the forging of stainless steel has given rise to a fresh approach to architectural blacksmithing. The work of Giusseppe Lund illustrates this well.
Mass production techniques have reduced the marketplace for blacksmith work except in Africa, India, Southeast Asia, and South America where large numbers of artisans remain doing traditional work. The great demand for custom metalwork has given rise to a new breed of smiths commonly known as Artist-Blacksmiths. A famous pioneer of this type of artisan is Philip Simmons of Charleston, South Carolina.
One very famous blacksmith was Hephaestus (Latin: Vulcan). He was the blacksmith of the gods in Greek and Roman mythology and constructed all of their weapons and, especially, the lightning bolts that Zeus (Latin: Jupiter) threw at the Earth.