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Description

5KG MULLITE GROG (100 MESH)Although rare in nature (its named for the only known occurrence of it on the Scottish Isle of Mull), mullite is ubiquitous in ceramics. When clay is fired above 1100 C, a network of interlaced mullite needles forms, creating the strong internal scaffolding of stoneware and porcelain. Mullite grogs are made by calcining an aluminosilicate such as kyanite. For more information on mullite, see the Digitalfire. com Reference Library of ceramic materials.

Leave it sit for a while & stiffen

Transparency is very good for a matte glaze but dark clays can appear a little milky where glaze application has been heavier

magnetite ore can produce fired colours ranging from light grey to taupe-grey to dark brown to near-black depending on concentration

It is one of the most useful and handy tools in my box

For maximum effect mix with water in a high shear mixer such as a kitchen blender

Use the texture to hold back runny glazes

Die kits are sold separately

dippig recipe

It decomposes to cobalt oxide on firing and can be used as a substitute for it in recipes (use 1

A very powerful glaze colorant typically used at levels <2% to produce opaque moss greens or blue-greens with cobalt oxide

Improve Temperature Uniformity

Knob is marked Off/Low/Med/High