can you use cement in ceramic molds?

Answer 1

Don't think so-- slip (what you put in ceramic molds) is much different than cement-- and the action of the material is different.-- i.e. cement heats up as part of the chemical action to get to the solid state-- slip is actually a type of mud-- the mold wicks the moisture out of the mud-- leaving a shape.

Answer 2

I dont think so. As it dries the cement will expand and could damage or destroy the mold. Secondly I dont know how well the cement would react to a release agent in such a mold.