June Perry on thu 12 dec 96
Some delayed crazing can be caused by a non vitrified body which later takes
on water.
To correct crazing some things to try:
Make sure your claybody is tight.
Don't overfire that can cause crazing.
Fire bisque a bit hotter
Cool kiln slower
Use amorphous silica
Substitute some lower expansion material like magnesium for some of the
whiting in the recipe.
Decrease feldspar
Add more flint to the recipe.
Add flint to the body.
Get a new claybody!
Regards,
June
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