Making moulds with Plaster

Making moulds for ceramic work is easy and affordable. To make bowls you can either spray the bowls with a release agent, such as silicone or cover the bowl with a clay layer. This means you can etch or alter the shape to suit before pouring in plaster.

To make my heart mould I formed a solid heart shape and pressed it firmly to the base of a plastic container. After pouring the plaster I jiggle the container to release any bubbles.

Once set, the plaster mould can be easily removed and used. When creating wall hangings it’s important to consider how the piece will be hung. I attach clay using a vinegar and water mix to help with the blending of the clay. Using a small 2cm long piece of straw I cut a hole, so the wire can be used for hanging the ornament when finished.

After about a week of drying, weather dependant, the pieces can be put into the kiln for a bisque firing up to 1040oC. Then once the glaze has been applied, the pieces will receive a second firing, up to 1200oC. Complete.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s