Painting and finishing dried clay without ruining it

Wait longer than you want to

The commonest mistake is painting a piece that is dry on the surface and soft inside. The paint seals the outside, the core cannot lose its moisture, and a week later the piece smells faintly of a damp cupboard and the paint lifts in sheets. Give thick work two days, and test by weight rather than by touch: a fully dry piece feels surprisingly light.

Thin work is forgiving. A flat pendant painted the next morning will be fine.

Acrylic is the answer, and white is the base

Craft acrylic covers in one or two coats, dries fast enough that a child does not lose interest, and does not need anything added to it. Watercolor soaks in and goes chalky; oil paint never really sets on a porous surface. On white clay the colors read true, which is why anyone who intends to paint should buy white in bulk rather than painting over a colored piece.

For a custom shade all the way through, knead a drop of acrylic into wet white clay instead. It is slower than painting but it survives a chip, which painted work does not.

Sealing, gluing and hanging

A brush-on matt or gloss sealer makes a piece water-resistant and much harder to chip. Two thin coats beat one thick one. Hot glue bonds dried clay to card, wood and itself; white school glue works but takes an afternoon.

If something needs to hang, push the hole through while the clay is still soft. Drilling a dry piece splits it, every time, and there is no repair that does not show.