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stage of clay

clay

QuestionAnswer
wedge to read or mix clay by cutting/rolling or pounding; removes air bubbles
leather hard clay which is dried somewhat but which is still damp enough to be joined to other
greenware clay pieces that have not been fired
bone dry the condition of unfired clay when it is as dry as possible prior to firing
kiln a furnace for firing clay products
Pyrometric cone a device for measuring heat in the kiln
pinch pot pinching a ball of clay inside and out to form a cup
coil building using snake like forms to build clay walls
slab building rolling clay into flat forms, cutting and standing them up to create boxes,cylinders
Extruder a lever system for pushing clay into a variety of forms
throwing forming clay on a potter's wheel
slip or slurry a mixture of clay and water used as a binder/glue
colored slips wet colored clay used to decorate
soft slab making a piece with a slab before it is leather hard and without corners
slip trailing decorating clay by squeezing slip out of a bottle
sgrafitto painting slip on clay and drawing through the slip so that the clay body showed
stencile using damp paper towels as a stencil with slip or glaze
glaze a compound of minerals that is applied to the surface of greenware or bisque ware and that forms a glassy coating when fired
bisque fire firing dried clay pieces for the first time in a kiln
glaze fire firing bisque pieces that have been glazed
primary clays clays that are found in the ground at their source of origin
peephole a hole in a kiln chamber, covered with a removable plug, through which one can observe the pyrometric cones, color or atmosphere inside the kiln
earthenware pottery fired to below cone2; usually red and porous
kiln furniture heat resistance posts, shelves, and other devices upon which ware is supported in a kiln during firing
kiln sitter a kiln mechanism that automatically turns off the kiln when a small pyrometric cone in it slumps
kiln wash a refractory coating applied to kiln shelves to prevent excess glaze from fusing ware to the shelves
plastic clay in this stage is wet, soft, workable. you can use it for throwing on the wheel and also hand building with coils, slabs and pinching
leather hard clay at this stage has begun drying the clay is damp but cannot be bent any longer
bone dry also know as "greenware". clay at this stage is fragile. almost all of the water has evaporated from the clay and it can feel dusty to the touch.Be careful handling clay at this stage as it will break very easily
Bisque clay at this stage has been fired once in the kiln.all of the water is gone from the clay it is at this stage that glaze i added onto the clay piece. clay at this stage is still fragile
Glazed clay at this stage has been fired twice and is at its maximum strength.functional work is ready to be used now
Created by: jia.mckelvy
 

 



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