Shaping and polishing the stone

A prior post showed the stone selected. The next step is to shape and polish the stone. I use power tools [power grinder and a power sander] to obtain the general shape for the sculpture. The stones usually have divets, cuts, and cracks throughout. I like to incorporate as many of the divets as possible into the sculpture because I find they add interest. I use the power tools to even out and smooth the surface. However, tool scars remain. Hand sanding is required. I start with 100 grade, sand thoroughly to even it out. Then sand again thoroughly with 200 then 320 then 400 and finally with 600 grade sand paper. I like to sand the stone until it looks translucent. The colors come out and the stone is smooth to the touch. When I am finished sanding I clean the stone and apply mineral oil to create a sheen.
This is the stone depicted in the prior post after the process is completed. This will be the general shape of the stone section of the sculpture. Further sanding and even modifications to the shape may take place after the bronze is cast. However, this will be used in the process of creating the wax sculpture.