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<p>[QUOTE=&quot;Taupou, post: 7234660, member: 45&quot;]To clarify some misunderstanding since the terms are confusing (and sometimes misused): &quot;greenware&quot; refers to unfired clay.&nbsp; Since it has not been fired, it is very fragile, and if it gets wet, will return to its former state as clay.&nbsp; (Some pottery is decorated at this stage, called a &quot;single fire&quot; type of pottery, but it isn&#039;t common, and the forms themselves are not sold, since it would present too many problems for the seller.)&nbsp; </p><p><br /></p><p>&quot;Slip cast&quot; ware refers to how a form was made, as in a mold, opposed to being thrown on a potter&#039;s wheel, or hand-built.&nbsp; </p><p><br /></p><p>Slip cast wares therefore can be either &quot;greenware&quot;, meaning it hasn&#039;t been fired, or &quot;bisque&quot;, meaning that it has been fired at a temperature high enough turn permanently hard and to prevent it from returning to clay if it gets damp, but still porous enough to be glazed.&nbsp; Slip cast forms are commonly sold in bisque state, ready for decoration.</p><p><br /></p><p>It is then fired a second time, to become &quot;vitrified&quot; or reach maturity, and for the glaze to become part of the pot.&nbsp; </p><p><br /></p><p>The type of the clay itself, and the glaze formula, will all have different temperatures at which they reach those two stages, and they need to be compatible.[/QUOTE]</p><p><br /></p>

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