Sodium Silicate Ceramic Slip
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Trimming knives used to trim away excess clay at the end.
Sodium silicate ceramic slip. It doesn t take a ceramic engineer to make a good quality casting slip but slip mixing is a chemical process that is affected by even the slightest changes in temperature humidity and the chlorine and chemicals that are added to water supplies. Sponge small generally nice to have if the piece gets goopy or you need to smooth things out. Too much sodium silicate causes overdeflocculation. This is a siccative or drying agent.
See the section on over deflocculation sodium silicate may be stored for extended periods in tightly closed plastic containers. Sodium silicate is the common name for a compound sodium metasilicate na2sio3 and is also referred to as liquid gl. Too much sodium silicate. The viscosity of this compound varies according to the ratios of silica and sodium oxide used.
The amounts of sodium silicate or dispex added to a casting slip are very critical and either too much or too little may result in the slip being too thick or too thin. Sodium silicate n brand sodium silicate is a chemical used to deflocculate casting slip. I ve used this method with a sodium silicate mixed with a white slip on a dark clay body with great results. On firing it forms a ceramic bond.
Because sodium silicate is sticky and dries hard it can be used as a glue to bind ceramic particles together even aggregates. Aluminum galvanized iron or zinc containers should not be used. Too much sodium silicate causes overdeflocculation. The greater the proportions of sodium silicate to slip the larger the cracks.
Sodium silicate is a chemical used to deflocculate casting slip. If this happens take a 1 litre sample of the slip and add one or two drops of dispex or sodium silicate. See the section on over deflocculation sodium silicate may be stored for extended periods in tightly closed plastic containers. Sodium silicate n brand sodium silicate is a chemical used to deflocculate casting slip.
By running my fingers through the silicate slip layer when partially dry i create areas of varing cracking textures. Sodium silicate also known as water glass or soluble glass is a compound containing sodium oxide and silica.