help needed re slip casting in Studio Operations and Making Work Posted September 17, 2018 · Report reply 18 hours ago, Min said: Hi Julia, Okay, so it's not too much deflocculant but not any at all that is the problem. There is just too much water in your slip. Casting slips contain far less water than a slip made with just clay and water and yet look just as fluid. There is an article about using your claybody and turning it into a casting slip here, and a short explanation of mixing casting slips here. For red earthenware I would suggest using Darvan 811. It's easy to add too much deflocc so you need to be able to accurately measure the deflocc and slip as you find the right amount to use. (Some pugged claybodies don't work well as casting slips as there can be too much bentonite in them which causes them to cast too slowly.) Min thanks so much for the information. Ill have a look at those links and hopefully get it sorted. Cant wait to get started!