Buy modeling putty from your local craft store, opting for a type that has two types of putty in each kit. You roll the two kinds together to make the putty and it dries hard. Choose a nontoxic form if you're repairing a dish, pot, cup or serving dish.
Pinch a small piece of putty off the larger roll. Roll the piece in your hands, until it forms a small ball. Push a toothpick against the ball of putty and transfer it to the porcelain piece. Use the toothpick to push the putty down gently against the break.
Push the broken piece of porcelain into place against the putty. Wiggle the pieces slightly, until the broken piece is flush against the porcelain. You might notice a small amount of putty squeeze out over the sides. If this happens, wipe it off with a damp cloth.
Tear off a small piece of masking tape and push one end flat against the porcelain, right at the end of the broken edge. Pull the tape tightly to the other side and press down to push it against the broken edge. The masking tape should completely cover the break.
Wait six hours for the putty to finish drying and then pull off the masking tape. Use fine-grit sandpaper to gently rub off any putty that you missed earlier or any putty that seeped out during the drying process. Use an artist's brush to paint over the crack with acrylic paint and add a coat of clear glaze, if you like.
Things You Will Need
- Modeling putty
- Damp cloth
- Masking tape
- Fine-grit sandpaper
- Acrylic paint
- Clear glaze
- Make sure that the modeling putty you use dries completely and doesn't remain flexible.
- It may take longer than six hours for the putty to dry.