debsboon Posted October 16, 2015 Report Share Posted October 16, 2015 I am using a pre mixed stoneware slip. I am casting in several different moulds, one part and two part. During the initial drying before (and sometimes after) I remove from the mould, the inside bottom of the pots craze and crack. I am drying them out slowly and not in a warm room. Why oh why oh why? Can provide photo if required Link to comment Share on other sites More sharing options...
debsboon Posted October 16, 2015 Author Report Share Posted October 16, 2015 I am using a pre mixed stoneware slip. I am casting in several different moulds, one part and two part. During the initial drying before (and sometimes after) I remove from the mould, the inside bottom of the pots craze and crack. I am drying them out slowly and not in a warm room. Why oh why oh why? Can provide photo if required Link to comment Share on other sites More sharing options...
Mark C. Posted October 16, 2015 Report Share Posted October 16, 2015 photo and times left in molds nd location. mark Link to comment Share on other sites More sharing options...
Chilly Posted October 16, 2015 Report Share Posted October 16, 2015 I have used pre-mixed and converted from plastic clay. Both ^6 and not had this problem. I leave the slip in the mould for between 10 minutes in the summer to 25 minutes in the spring/autumn/winter/damp days. Depending on the type of mould (mug with or without handle for example) I leave the casting in the mould for 24/38/72 hours. How thick are your castings? How dry are your moulds before you cast? Link to comment Share on other sites More sharing options...
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