The basic casting material is plaster of Paris and modifications of it. There are other materials that can be used. I have even used metals. The choice depends on what use is to be made of it, time available and the nature of the imprint material.

You also need something to contain the casting material while it sets. I have used modeling clay on duct tape for instance. There are commercial mate...

The basic casting material is plaster of Paris and modifications of it. There are other materials that can be used. I have even used metals. The choice depends on what use is to be made of it, time available and the nature of the imprint material.

You also need something to contain the casting material while it sets. I have used modeling clay on duct tape for instance. There are commercial materials for this purpose also.

The procedure is to mix it, work fast and avoid air inclusion. Wait the proper amount of time before disturbing it. Separate carefully. Sometimes a separation media is necessary before applying the casting material.