I've Just finished sculpting my latest piece and am in the process of making a mold.
It was so hot during the final stages of sculpting that the clay was like butter - impossible to work with. I had to keep the sculpture in the refrigerator overnight and for long periods in between working. It didn't leave much room for food, but who needs food when you are sculpting?
Next I started the rubber mold. Because of all the undercuts and internal spaces this is easily the most complicated mold I've ever made.
The blue tint is the first layer of rubber thinned out to pick up detail
Next I changed the color and thickened the rubber for quicker application and started to apply the shim lines