I enjoy sculpting in oil clay rather than water clay. It is just too much of a hazzle to work with water clay as it must be sprayed with water regularly so it doesn’t dry up. Oil clay can be left alone for years. The downpart of oil clay is that it cannot be burned but melts in heat. A mold must therefore be made around it so that the sculpture can be cast in another material.
This is where it is possible to make multiple casts in wax in order to produce heat resistant moulds that can accept molten bronze. I have however found that this so-called lost wax method is incredibly tedious and I have therefore experimented with alternative options for producing bronzes.