Slip or 'engobe' is a form of liquid clay in which colours can be added. It is used to paint onto the surface of pots to give them colour and texture. When we want to create a smooth finish we have to ensure the consistency of slip is spot on (like cream). If it is applied too thick or applied to a body of clay that is already very dry, it can split and crack. These effects can be exaggerated to create textural surfaces.
We've been experimenting with stretching a white slip over dark clay and throwing it across the table to make it crack. To create an extra thick slip we added dispex to porcelin. Dispex works to suspend particles in liquid. When it is added to slip it makes it extra thick and unctious.