BENTONITE

General term for Montmorillonite clay.

Added to a body to improve  plasticity (up to 5%) to increase plasticity and in glazes (up tu 2%) as a suspending agent.

A general term for a montmorillonite clay, often added to a body to improve plasticity.

Used in bodies (up to 5%) to increase plasticity, and in glazes (up to 2%) as a suspending agent, but must be added to the dry ingredients.

At stoneware temperatures it fuses to produce a typical brown colour (5%).

Increases glaze viscosity, firing range and resistance to crystallization.