Clay
What is clay that has formed in place by the parent rock rather than being transported somewhere else. Also called a residual clay.
Primary Clay
any form of brace or support. Usually a skeletal construction over which clay is applied.
Armature
A furnace or oven built of heat-resistant materials for firing pottery
kiln
the firing of a kiln or open fire where oxygen is present such as in an electric kiln which is the kind of kilns we use here at school.
Oxidation firing
a furnace or oven built of heat-resistant materials for firing pottery
clay moved by water or wind from its source and settled elsewhere in deposits. Also called sedimentary clay.
Secondary Clay
unglazed ware that has been fired once.
Bisque ware
Heating pottery in a kiln to bring the clay or glaze to maturity.
Firing
a firing in which the oxygen is removed, often using a gas kiln.
Reduction firing
heating pottery in a kiln to bring the clay or glaze to maturity
Firing
although seemingly dry
green ware
an exceptionally heat-resistant clay used to make the walls of kilns, and kiln furniture as well as external covering for space craft, such as a space shuttle.
A hole in the wall of a kiln through which the potter can watch the firing.
Peephole
triangular supports with fire-resistant metal points, which leave only small marks on the glaze. Used to support pieces of glazed pottery during the glaze firing.
Stilts
unglazed ware that has been fired once.
Bisque ware
green ware is ready for
bisque firing
small pyramids of ceramic materials formulated to bend over the then melt at certain temperatures, indicating that the firing is complete.
Pyrometric cone
the mechanism on the side of a kiln which automatically turns off the kiln by using a timer, a pyrometric cone, or both
Kiln sitter
glaze defect in which the glaze separates from the ware during firing and leave bare spots. Usually caused by dust or grease spots on the surface of the ware before glazing.
Crawling
clay that was formed in place by the parent rock, rather than being transported elsewhere. Also called residual clay.
Primary clay
Although seemingly dry, green ware is ready for bisque firing when it no longer feels _____ to the touch.
cold
What are four steps you need to take to join two pieces of clay? (in order)
score, slip, join, and weld
heat resistant shelves and posts for supporting ware in the kiln during firing.
Kiln furniture
glaze defect in which unintentional cracks develop over the glaze surface. Usually caused by the ware cooling too quickly or improper mixture of the glaze.
Crazing
a firing in which the oxygen is removed, often using a gas kiln.
Reduction firing