Most pottery is fired twice (or in some cases 3 or more time!). The first firing is called the bisque, then there is a second firing for the glaze. This is the way youprobably learned, and they way you probably do it. But it is possible to fire only once.
Glazes are used almost exclusively on bisque. Occasionally, with certain techniques,you may apply glaze to greenware, but it is generally not done. The reason for this is that greenware should be fired to cone 04 and glaze to cone 06. During agreenware firing moisture and gases escape from the clay.
Underglazes are used in pottery to create designs and patterns that will come up through the glaze covering them, which can give the surface more visual depth and character. Although they are often used under clear glazes, they can also be used under other, generally light colored, transparent glazes
Ceramic Greenware. ... As potters also refer to wet or dry clay wares from the wheel or hand-built as Greenware (usually just referencing "Green" rather thangreenware), a simpler definition for Ceramic Greenware would be "any wet or dry clay based object before the first (bisque) firing".
Clay ware takes on varying physical characteristics during the making of pottery. ... Bisque refers to the clay after the object is shaped to the desired form and fired in the kiln for the first time, known as "bisque fired" or "biscuit fired".
The 6 Stages of Clay Slip: Clay suspended in water. ... Workable clay. Strong enough to hold its shape, and able to bend without breaking. ... Leather Hard: Drying clay that still has some flexibility. ... Bone Dry: Clay that has dried out and is ready to fire in the kiln. ... Clay that has [...]
Someone who makes pottery is usually called a "potter" in English. The place they do this is "a pottery". They make “pots” which is just a word for any vessel (at one time made of clay). ... The older English term is a "Crocker".
Porcelain. A high-firing fine-grained white clay body that fires to a durable, strong, vitreous ceramic. It is usually pure white because of its high kaolin content and lack of other ingredients like iron that can change the color and properties.
Other ceramics, such as silicon carbide, do not conduct electricity as well, but may still act as semiconductors. (A semiconductor is a material with greater electrical conductivity than an insulator has but with less than that of a good conductor.)
Also, clay is the raw material, ceramic and pottery are generally the same thing, just semantics, but some would disagree on definitions, porcelain is high fired, terra cotta or earthenware is generally low fired.
