Vocabulary Ch#10
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Warping:
this occurs during drying or firing.
Fracturing:
when the glaze is applied to thick and causes the ware to break.
Shivering:
a glaze defect: glaze which has cooled, split & peels away from the clay.
Glaze:
a coating used to seal & protect, glass like.
Under Glaze:
color (paint like) applied to clay which fires flat.
Matt Glaze:
a mature glaze that is smooth but without gloss.
Kiln Furniture: equipment that is used in the kiln to hold ware during firing.
Stacking the Kiln: loading the kiln with the maximum amount of ware.
Electric Kiln:
a furnace used for firing ceramic projects, this is one is the easiest to regulate the temp.
Bisque ware:
what clay is called after it has been fired one time.
Vocabulary Ch #9
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Blebbing:
raised bumps on the surface, caused from improper kneading,
Bloating:
looks like blebbing but caused by insufficient oxygen in the kiln.
Crazing:
cracks all over the glaze fired piece, caused by contraction between the clay and glaze.
Crawling:
bare spots on the clay caused by contraction of the glaze, also known as beading.
Peeling:
glazes that are applied to heavy or projects that have not been washed before glaze is applied.
Bubbles:
glaze has been fired too rapidly, gasses from the clay try to escape yet get trapped in the glaze.
Blistering:
bubbles that pop and sharp edges are left on the surface of the glaze, known as cratering.
Running:
glazes put on too thick & slide down the surface of the project.
Cracks:
glaze defect, also known as exploding, these are caused by rapid water removal when firing.
Shrinkage cracks:
this happens in tall ware when the kiln is not heated evenly.
Vocabulary Ch #9
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Blebbing:
raised bumps on the surface, caused from improper kneading,
Bloating:
looks like blebbing but caused by insufficient oxygen in the kiln.
Crazing:
cracks all over the glaze fired piece, caused by contraction between the clay and glaze.
Crawling:
bare spots on the clay caused by contraction of the glaze, also known as beading.
Peeling:
glazes that are applied to heavy or projects that have not been washed before glaze is applied.
Bubbles:
glaze has been fired too rapidly, gasses from the clay try to escape yet get trapped in the glaze.
Blistering:
bubbles that pop and sharp edges are left on the surface of the glaze, known as cratering.
Running:
glazes put on too thick & slide down the surface of the project.
Cracks:
glaze defect, also known as exploding, these are caused by rapid water removal when firing.
Shrinkage cracks:
this happens in tall ware when the kiln is not heated evenly.