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Seb posted a topic in Clay and Glaze ChemistryHello everyone, I am wondering if anybody can give me an advice on deflocculation? I am trying to adjust the viscosity of one gallon slip "Cone 06 Casting Slip - White" from a ca 50 seconds runtime, to ca 30 seconds. I have used dispersal "Darvan 7" in small increments and I am not adding water! For some reason, the slip does not seem to change significantly. Could there be an issue that I am not aware of? About how much would I roughly need to add to a gallon to get the running time down about 20 seconds under normal circumstances? Any advice would be so much appreciated! Thanks everyone, Seb