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Real bone ash is obtained by calcining bone up to approximately 1100°C and then cooling and milling. This material is still manufactured today since some of its important properties are due to the unique cellular structure of bones that is preserved through calcination. Real bone ash has excellent ...

This material is toxic in its raw state and care needs to be taken with storing and handling. Matte glazes made with high proportions should not be considered food safe.

Magnesium carbonate otherwise known as light magnesium carbonate. A white very light-weight powder, practically insoluble in water.When added to glazes magnesium carbonate often mattifies them, simply because it is refractory (it is useful at lower temperatures where making a good matte can be quite...

Manganese Di-oxide is also known as Pyrolusite. Above 1080C, half of the oxygen disassociates to produce MnO, a flux that immediately reacts with silica to produce violet colours in the absence of alumina, browns in its presence. Thus if it is being used in glazes fired below 1080C it should be cons...

China Clay Ultrafine, also known as Kaolin, is a white, soft, plastic clay mainly composed of fine-grained plate-like particles. It is chemically inert, non-abrasive and has low heat and electricity conductivity. Plastic clays have a wide range of colours, but when fired, selected clays give results...

Alternate Names: OM4 , OM4, OM#4, OM 4, Old Mine #4, OM-4Old Mine #4, Mayfield, KY.A fine-grained ball clay with excellent plasticity and strength. Old Mine #4 is an "industry standard" based on its popularity in both casting and plastic formed bodies. It is also widely used as a suspension aid in g...

The term 'silica' can be misleading. It is important to understand the difference between 'silica mineral', 'silicates', and 'silica glass'. Quartz is the best example of a natural mineral that is almost pure silicon dioxide (it is the most abundant mineral on planet earth). Other ceramic minerals l...

Soda Feldspar is generally a clean white mineral that sources sodium, alumina and silica along with some potassium and calcium. No actual materials have the ideal formula shown here, they all have some K2O and small amounts of other contaminants. Manufacturers refer to their materials as 'soda' if N...

a very slightly soluble source of SrO used in glazes.Strontium carbonate is often recommended as a substitute for barium to produce matte glazes. Use about 75% as much and test first to make sure colour response is the same. However, strontium is not a substitute for barium as a precipitator of solu...

Iron Oxide Yellow is also known as hydrated iron oxide.This is one of the many colours of iron oxide. More accurately, it is an iron hydroxide. Yellow ochre clay contains yellow iron oxide. In ceramics red iron oxide is most commonly used in glazes and clay bodies, but black is also used. Yellow is ...

Zinc oxide is a fluffy white to yellow white powder having a very fine physical particle size.A lot of zinc is used in crystalline glazes, because these have no clay content, they bring out the best and worst of both the calcined and raw materials. The raw zinc suspends glazes better (the calcined s...

A very white firing European suitable for use in bodies and glazes.

also known as Ferric Oxide, RIO, Hematite. In oxidation firing iron is very refractory, so much so that it is impossible, even in a highly melted frit, to produce a metallic glaze. It is an important source for tan, red-brown, and brown colours in glazes and bodies. Iron red colours, for example, ar...

Sodium silicate or waterglass, water glass or liquid glass is a sticky, viscous liquid. It is produced by dissolving silica gel in sodium hydroxide.Sodium silicate is the most popular deflocculant used in casting slips for many years (as a source of sodium ions). It is nearly always used with soda a...

Peptapon is an organic gum and binder that can be used almost the same way as CMC. Its gel isn't transparent like CMC gel; it is thicker using the same amount of water. Prepare as usual CMC preparation up to 45 gram in 1 litre of very hot water. Mix well using a mechanical mixer if possible, leave f...

Replaces Frit 4124This borosilicate frit is high in calcium. It melts are very low temperatures and among the most useful of all common frits because of its glaze-like balanced chemistry. This frit has a chemistry somewhat similar to 3134 (the latter adds CaO, Na2O and B2O3 at the expense of all the Al2O3 and some SiO2.

Used as a base for a brushing medium to impart green strength to brush work and glaze application. As a basic guide use at between 0.5 to 2% on water content. Add to warm water to dissolve and age overnight before adding to a the mix.Safety Data Sheet

10L666 pieces

Add to most casting bodies at 10% to achieve beautiful Terra CottaSafety Data SheetSlip Recipe

A beautiful plastic dry terra cotta raw clay for use in bodies, terra sigillata, glazes and decorationVery similar results to Red Art Clay from America.250gSafety Data Sheet

Iron Spangle - Magnetite Fe3O4 (BA610)Used to produce blacks and speckles in glazes (1-5%)A mineral form of black iron oxide. When mixed in clay body or glazes, produces a speckling effect. (Should be screened due to inconsistent particle sizes.)The final colour obtained with iron oxide varies with ...

1 LitreThis medium is the basis of Abbots brush-on clear glaze. Any glaze material can be dispersed in this medium (rather than in water) to produce a thixotropic gel suited to brush application. This enables multiple coats of glaze of one or more varieties to be applied without risk of peeling or b...