With porcelains, poor plasticity gets worse at the leather hard stage

Tuesday 25th October 2016

This porcelain becomes quite brittle as it gets stiffer making it difficult to make these cuts in the foot ring. This creates extra sponging work when it is dry. It also means that dry strength will be low. Porcelains do not need to be this way, plenty of white burning bentonites are available (although they increase cost).

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Plasticity, Porcelain

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