Post #684029 by MadDogMike on Sun, Jun 30, 2013 8:27 AM

I knew when I posted that yogurt comment it was going to get me into trouble, not very scientific :lol:

Jurka, I'm having trouble understanding where your problem lies. "I saw that walls were not solid, hard pieces or something..." Were there places where no clay stuck to the mold and there was no ceramic wall there? Maybe a picture would help? The recommended Formsil 113 that you don't add is the deflocculant we were talking about, I'm not sure how it would work without that. I can't figure out what the Plastifikaator CJ is, some sort of plastifier or wetting agent usually used in plaster.

I slip cast a piece yesterday afternoon and left it in the mold for not quite 2 hours, wall thickness is about 3/8 inch or 10 mm which is about what I like. As far as it turning hard in the mold, I have never had that problem. After pouring the excess slip, I let it set in the mold for about 14 hours then carefully removed the mold - it is still too soft to handle and will need to dry out of the mold for several hours.