Plaster Mold Making & Some Ceramics - Other Crafts

G GROG Grand Member (1 year) Tujunga Joined: Jun 21, 2006 Posts: 7548	G GROG Posted posted on Wed, Apr 30, 2008 8:18 AM GROG not remember you guys mentioning "shrinkage". Shouldn't your sculpt be a little larger than what you want the final ceramic size to be? If GROG remember GROG' ceramic-making correctly, after the mold is made, the slip is poured into the mold, and once hardened enough it is removed from the mold and is called greenware. As it dries it shrinks. Then, when it is fired it shrinks some more if GROG remember correctly. Thus, your finished ceramic will be smaller than your original sculpt. About what percentage of shrinkage can you expect?

GROG not remember you guys mentioning "shrinkage". Shouldn't your sculpt be a little larger than what you want the final ceramic size to be?

If GROG remember GROG' ceramic-making correctly, after the mold is made, the slip is poured into the mold, and once hardened enough it is removed from the mold and is called greenware. As it dries it shrinks. Then, when it is fired it shrinks some more if GROG remember correctly. Thus, your finished ceramic will be smaller than your original sculpt.

About what percentage of shrinkage can you expect?

Post #377197 by GROG on Wed, Apr 30, 2008 8:18 AM