Describe the importance of the clay sculpture when creating bronze sculptures. (Site 1)

To begin the process of making a bronze sculpture, most sculptors choose to make an original out of clay. There are multitudes of different clays available for the sculptor. The three main categories of clay used for sculpture are water-based clay, oil-based clay, and self-hardening/low-fire clay. Choosing the proper clay for a particular project may simply be a matter of preference. Experience, however, is perhaps the best teacher when deciding what type of clay to use. - info from  

link to from clay to bronze - Sculptureworks, Inc.

Explanation:

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