Grogs & Sand

"Ground fired body added to clays to provide a proportion of already fired and often refractory material. Grog provides texture, both tactile and visual, along with bite for better control in forming. Grog is an opener which helps the clay to dry uniformly and because it is already fired it proportionately cuts down the overall shrinkage and hence any tendency to crack or warp. It is usual to consider grog as a body that is more refractory than the clay to which it is added and most grogs are fireclay fired to at least 1300°C (2372°F)."
-The Potter's Dictionary of Materials and Techniques

Products In This Category

Displaying products 1 - 12 of 12 results
$1.85

Grog is a hard-fired clay crushed to various mesh sizes. It may be added to clays for tactile and visual texture. It can aid in opening the body for drying purposes, reducing shrinkage, and to add 'Tooth' during the forming process.
$2.03

Grog is a hard-fired clay crushed to various mesh sizes. It may be added to clays for tactile and visual texture. It can aid in opening the body for drying purposes, reducing shrinkage, and to add 'Tooth' during the forming process.
$1.85

Grog is a hard-fired clay crushed to various mesh sizes. It may be added to clays for tactile and visual texture. It can aid in opening the body for drying purposes, reducing shrinkage, and to add 'Tooth' during the forming process.
$1.87

Grog is a hard-fired clay crushed to various mesh sizes. It may be added to clays for tactile and visual texture. It can aid in opening the body for drying purposes, reducing shrinkage, and to add 'Tooth' during the forming process.
$1.87

Grog is a hard-fired clay crushed to various mesh sizes. It may be added to clays for tactile and visual texture. It can aid in opening the body for drying purposes, reducing shrinkage, and to add 'Tooth' during the forming process.
$2.88

Molochite is highly calcined low iron mineral consisting of 55% Mullite and 45% amorphous glass. It is an excellent addition to porcelains as a grog material.
$3.02

Molochite is highly calcined low iron mineral consisting of 55% Mullite and 45% amorphous glass. It is an excellent addition to porcelains as a grog material.
$2.94

Molochite is highly calcined low iron mineral consisting of 55% Mullite and 45% amorphous glass. It is an excellent addition to porcelains as a grog material.
$2.99

Molochite is highly calcined low iron mineral consisting of 55% Mullite and 45% amorphous glass. It is an excellent addition to porcelains as a grog material.
$1.49

Feldspathic silica sands which can be used in place of grog in clay bodies to add texture and strength.
$1.55

Feldspathic silica sands which can be used in place of grog in clay bodies to add texture and strength.
$1.49

A high purity silica sand from Illinois.