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The whitest test bar here is a New-Zealand-kaolin-based cone 6 porcelain (NZK). NZK has low plasticity, so this body employs VeeGum to improve it. Immediately to the left of it are three North American-koalin-based bodies using standard bentonites. The bar to its right is a Grolleg-based body that uses a standard bentonite rather than a white burning one. All are plastic.
| Glossary |
Primary Clay
A clay deposit that is near the site of erosion and alteration. They have more mechanical impurities and fewer chemical and mineralogical impurities. Primary clays have larger particles and less plasticity. |
| Materials |
Bone Ash
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| Materials |
New Zealand Halloysite
The whitest burning kaolin available to potters. Low plasticity. Very sticky when wet, suspends glazes well. |
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