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Now that is a translucent porcelain! But much more.

These are two cone 6 transparent-glazed porcelain mugs. On the left is the porcelainous Plainsman M370 (Laguna B-Mix 6 would have similar opacity), it is semi-vitreous and has no translucency. Right is a highly vitreous, New Zealand kaolin based porcelain, Polar Ice. The secret to making this porcelain super-white is the NZ kaolin. The secret of its impossibly-high plasticity is the very expensive plasticizer, VeeGum T. What about the translucency? Nepheline syenite is used as the feldspar, but it alone cannot deliver this kind of translucency at cone 6. Amazingly the 4% Veegum acts as a translucency catalyst, it is the secret. Commercial manufacturers could never use a sticky and difficult-to-dry porcelain like this, but a potter can do incredible things with it (e.g. throw thinner, lighter, bigger than any other clay he/she has ever used!).

Polar Ice porcelain mug with a light inside to demonstrate its translucency

Links

Materials New Zealand Halloysite
Materials Bone Ash
Articles Formulating a Porcelain
The principles behind formulating a porcelain are quite simple. You just need to know the purpose of each material, a starting recipe and a testing regimen.
Glossary Bone China
A ceramic whose priorities are translucency, whiteness, fired strength and resistance to thermal shock failure.
Media A 3-minute Mug with Plainsman Polar Ice
Tony Hansen takes you through the steps from opening the box and wedging the clay to taking the fired mug from the kiln.
URLs https://plainsmanclays.com/data/index.php?product=12881
Plainsman Polar Ice cone 6 translucent porcelain

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