Leola Posted June 15, 2014 Report Share Posted June 15, 2014 Hello My question: Am slipcasted some small pieces porcelain of around 15 cm before firing. Some of them shrinked more (like 2 cm more) then others, while the thickness is even. Someone any clue why this is? Thank very much! Link to comment Share on other sites More sharing options...
Mark C. Posted June 15, 2014 Report Share Posted June 15, 2014 If they where made from the same slip(all one batch) and the molds where the same dryness(same absorption rate)-then the only thing left is they where different temperatures in kiln? Mark Link to comment Share on other sites More sharing options...
Leola Posted June 16, 2014 Author Report Share Posted June 16, 2014 mmm, That could be the case, although the kiln is very small. Thank you for your reaction Link to comment Share on other sites More sharing options...
Mudslinger Ceramics Posted June 19, 2014 Report Share Posted June 19, 2014 Hello lala Were your pieces all cast at the same time? I slip cast often and the runniness or thickness of the slip, the dryness or wetness of the molds, the warmer or cooler atmosphere of the studio or a slight chemical change in different slip batches all combine to change the conditions of slipcasting which affects the final clay product and can change their shrink rates. To get pieces the 'same' all the conditions must be the same each time you pour the slip. Irene Link to comment Share on other sites More sharing options...
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