Materials :
The main raw material is clay that is achieved in some quarries close to the communities of potters, there are several different types and compositions that will indicate the quality of products, the most common is the red clay that is found in Most of Peru. In cities, the artisans buy clay intermediaries by bringing truckloads of nearby quarries or clay made that offer specialized companies.
To the best qualities of clay is combined with other materials and especially with calcareous sand (silica), the chamotte (remains of the pottery, etc.). In some places using other aggregates such as the Shapiro adding the ash made from bark of a tree called “apacharama” to give greater strength to the clay against the cochura.
Production Process :
The production process of different types of ceramic products and different styles, differs slightly from one another. Try to describe each step indicating the differences between the two styles.
Selection: The clay material is selected separating impurities visible crumbles into small pieces. Sometimes it makes a grinding mill and make it easy for its dissolution.
Preparation of clay: The clay is dissolved in water and added some components, as is the case, then beat the mixture to homogenize.
The diluted pulp is passed through a fine sieve to remove pellets and impurities.
Pulp drying liquid is placed in dryers to remove water by evaporation at room temperature and get the dough to form. The drying beds are red brick that goes into the ground. The paste is kept covered with polythene bags, in some places it is left to mature for several days before use.
The extruded paste is obtained through various methods to remove air bubbles, in some cases it is kneaded by hand or rollers and others were compressed into a pasta extruder being used.
Molding: modeling has different variants depending on location, tradition, technology, etc..
Shaped or sausage rolls (Columbus): The classical and most primitive form of shaping the articles of pottery, is to make rolls of clay with a suitable thickness which will form the basis of the vessel and then grows edges, this is done with the fingers to give an optimal thickness of the vessel according to the size of it.
Palette: A technique used in some regions, especially in northern Peru. Is to shape the vessel being beaten with a paddle. Is the initial coils of clay, then maintained as a stand liza stones on the inside is being beaten with a wooden paddle from the outside, until the desired shape.
Modeling Hand: Generally used by expert craftsmen to make unique and artistic products. The form is used solely by hand ESTEC and carving knives.
Casting: A technique used to make utilitarian items of uniform and smooth finish or decorative items repetitive. The plaster mold is made by the same artisans. There are variations according to the consistency of clay.
The first is the technique of pressing, dry pasta is used clay is filled all the folds on both sides of the mold and then pressed the two sides together, then the mold is removed to make it dry.
The second is the technique of casting or “collage”, it is used in pasta liquid clay, in this case first unite and push the two sides of the mold, then filled a hole at the top the pasta liquid, is calculated thickness acquired and empties the remaining pasta. Let it dry and then removed from the mold.
Turning: This is the most widely used technique for circular items such as dishes, pots, vases, cups, mugs, etc.. Using a tool called a lathe, which is a metal disk rotating at a certain speed, the craft will give way to exploiting this article focuses on the disc requires quite proficient in their fingers to calculate the thickness and shape of the article .
Other techniques such as those used in Rachi (Cuzco) where craftsmen shape the dishes based on another dish, there are other more rudimentary and more tech, but are less used.
The preliminary finish finished pieces but not dry or medium dry (a “leather”) is to finish a preliminary passing a sponge, refining the defective parts, remove the mold in some cases are holes, doors, decorations or carving decorative figures, etc. in the case of articles with facts about the parts are returned.
Drying the shaped pieces are dried in the atmosphere, in the shade, about 3 to 4 days depending on the humidity and the size of the piece. The workshops newer dryers are used based on hot air.
The polished pieces were dried lijan for a fine finish and close the pores. This process is not mandatory in all cases.
Cochura: The process of cooking is also called cochura which gives the degree of technical ceramics, such as terracotta, pottery and ceramic itself, according to the temperature reached in the burning and the oven used.
There are basically three types of ovens: wood-fired oven, gas ovens and electric ovens.
Wood stove: These ovens made of adobe (earth blocks) or brick in cylindrical or square, has a door at the bottom for feeding firewood. The pieces are placed inside the oven using dry media such as rods, corrugated iron, then turn the wood into the lower leg and pokes the temperature, the burning time is approximately 2 hours and reached temperatures up to 850-900 degrees. Items that are burned are basically decorative.
Oven gas ovens are made of refractory materials (bricks and asbestos loose) inside which there are gas burners. In these furnaces that reach temperatures up to 900-1000 degrees is even higher. Burning decorative and utilitarian.
Oven: kilns are more sophisticated and is used for items such as high temperature ceramic tableware and other glass in these furnaces can reach 1100 to 1180 degrees of temperature.
In some places, such as the Shipibo in the Amazon jungle, the objects are burned with fuel to the environment, do not use any type of furnace, in this case the temperatures reached are low compared with those achieved in the furnaces camera.
In all cases there is a pre-heating stage and then burned itself. In the gas and electric furnaces are used pyrometers or thermostat devices to find the end of cooking, which is indicated by the temperature reached.
The product obtained is the “cake”, which is the piece but not burned decorating.
Items requiring a second glazes burning in an oven after being decorated and glazed.
Scenery: The decor also has different variations depending on the type of product.
Painting cold: The items are hand decorated with figures of various reasons. As for the pigments are the natural, which are usually land and stone powder of different colors, or artificial or synthetic.
Andalusia paint oven: mineral pigments are used to withstand high temperatures and make your final color after the second burn, the final color depends on the time and the temperature reached.
Texture: The textures are available in different forms, some wrapped with a piece of jute when fresh, the passing over a brush, or inject a strong flow of fine sand, depending on their skill, the artisan can achieve results implausible. The texture is always fresh and before the first burn.
Sizes: In this case the motives or figures are carved into the object when it is half dry (state leather) using punches or burins.
Smoking: In the same furnace is passed a stream of black smoke, which is achieved by burning green leaves of plants like mango, paper or rags, black smoke is impregnated on the surface of the ceramic giving an artistic aspect.
Finishing: Describe some techniques used by artisans to give the final finish to their work.
Bruno: The pieces, usually painted with natural pigments and minerals, smoked, and some other types of decoration are polished using abrasives, used in many pieces of polished stone with which they rub the surface to achieve a natural glow .
Waxing: This event is passed a special layer of wax on the object and rubbed with a cloth for a glossy finish.
Coating: The coating used to waterproof and make transparent the object brightness, the Shipibo use a plant called sealing varnish.
Enamel: For items of high temperature is passed from one layer of enamel vitrificador a second and then burned in an oven with a glaze finish. When using white enamel decoration is made on the enamel, transparent enamel is used if it is already decorated on the article.
Waterproofing: In the case of vases and pots of impermeability is achieved by pursuing any waterproofing resin or enamel vitrificador, in the latter case you have to do a second burn.
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i.jpg (3984 bytes)t is in this disparate land, beside the rivers and tempered 
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