In pottery it can be used to mark the outlines of a design on to ware that is going to be decorated. In the past it was used when typing with a typewriter, layers of paper and carbon paper were put together so when typing an original document three or four copies were made. It is used for making one or more copies simultaneously.
PAPEL CARBÓN Click on the title to see more imagesĬarbon paper (originally carbonic paper) is paper coated on one side with a layer of a loosely bound dry ink or a pigmented coating, usually bound with wax. Read more about: Teapot – Lid / Lid (a) In pottery When you measure the size of one, the other moves in the opposite direction so you have measurements for the inside of the neck and the outside of the lid. At the joint they can be tightened so the size is exact when measuring and comparing sizes.Ī) Caliper to measure the outer edge of a flange, the metal one is handmade.ī) Caliper to measure the inner edge of a flange.Ĭ) Caliper joined an accurate way to size lids for pots so they fit exactly. Both arms can be moved 180º, allowing the ends to be pointed inwards or outwards. They are made of wood, plastic and metal and each unit has two arms which join at one end and are curved at the other end.
It is the main source of calcium in glazes and also a flux in all types of glazes, it reduces crazing and increases hardness and durability and in large quantities produces a matt effect.ĬALIPERS -A pottery tool for measuring and comparing sizes.ĬOMPÀS DE CALIBRE - Una eina de ceràmica per a graduar i comparar mides.ĬOMPÁS DE CALIBRE - Una herramienta de cerámica para graduar y comparar medidas.Ĭalipers are instruments for comparing and checking sizes. marble) or limestone aggregate for road building or as an ingredient of cement or as the starting material for the preparation of builder’s lime by burning in a kiln. The main use of calcium carbonate is in the construction industry, either as a building material in its own right (e.g. It is commonly used medically as a calcium supplement or as an anti-acid, but excessive consumption can be hazardous. Calcium carbonate is the active ingredient in agricultural lime, and is usually the principal cause of hard water. It is a common substance found in rocks all over the world, and is the main component of shells of marine organisms, snails, pearls, and eggshells. It can enhance the finish of salt glaze ware by developing a thicker finish.Ĭalcium Carbonate is a chemical compound with the chemical formula C aCO 3. Contributes hardness and durability and in large quantities produces a matt effect. Not a rare color.Calcium Carbonate is the main source of calcium in glazes and also a flux at high temperatures. Sick Color: The color is off or wrong for some reason. Peppering: Tiny black specks in the glaze, normally white or light colored glazes. Factory Flaw: Is a flaw that covers less common types of flaws. Kiln Kiss or Kiln Flaw: Is a little spot where the piece touched another piece in the kiln and made a glaze pimple on one piece and possible glaze loss on the other. Glaze Pop: Is a popped air bubble that burst at the surface of the glaze during firing. Glaze Slip: Is a part of the pottery where the glaze did not cover. Chigger Bite: Is a tiny chip that removes the glaze from a spot, but doesn’t go into the clay. Pinpoint: Is smaller than a fleabite, like the point of a pin. Sometimes you can’t see them well, but running your fingernail across the piece will pick up the flaw. Flea Bite: Is a raised bubble bump or a tiny nick. Skip: Is a factory flaw where the glaze is lighter or did not cover the entire piece. Chunk or Chunker: Is a chip but over 1/2″.
Sometimes you can only hear a hairline crack and not see it (for the more experienced). Hairline: Is a crack that is very thin and tight. The glaze and the pottery itself has a piece chipped off…it can measure from 1/16″ to 1/2″. Chip: Is a chip–this goes down into the clay.
Not detectable when you rub you fingernail over it. Crazing: A crackling effect in the glaze A spidery type crackling effect–looks like crackle glass.
Here is a list, feel free to add any other definitions. When buying or selling collectibles and vintage ceramics online, it’s good to know what the various flaw terms used in the item descriptions actually mean.