Foam rubber: Is an artificial plastic sponge and is manufactured to use in many different ways from mattress to sleep on, mops to clean floors with, it is soft and collects water.
a) Useful for cleaning clay, leveling out transfers, stamping a texture into slip or onto a fired glaze.
b) A design can be cut out of it, dipped into a color and then marked onto the surface.
Read more about: Impressing
c) Used to rest the edge of the plate so that it does not slip while standing it up to paint and to protect the glaze-base from being damaged.
Read more about: Plate – stand