Here is the sterling silver casting fresh from the oven. The casting looks fairly clean due to the fact that I polish my wax carvings before casting. A clean wax reduces the time it takes to finish a raw casting.
Once the wax has been approved and polished, the model is sprued onto a rubber base. The sprue will act as a channel for the metal to flow into. The model, once attached to the rubber base is placed within a crucible and investment (like plaster) is poured into the form. It is air dried then placed in an heated kiln for several hours until all of the wax burns away. The metal is melted then poured into the cavity inside the plaster.
Once the metal is cooled the investment is broken away and the cast item is ready to be finished. In the following pictures you will see the cast ring before clean-up.