The casting material I used is called Polytranspar Liquid Cast. It is a two component product which requires mixing together equal amounts of Part A and Part B. The reason I like it is because it sets up within 3 minutes, has little odor and can be removed from the mold in a short time.
I sprayed the inside of the two mold halves with a light coat of mold release and clamped the mold together. After mixing the Polytranspar liquid cast I slowly poured it into the mold trying to avoid causing air bubbles. When I had poured about 8 oz. into the mold I began to rotate the mold by hand to make sure all the surfaces of the mold were evenly covered. I continued doing this for several minutes till the material set up.
Here is a picture of Kong's head fresh from the mold and ready to be cleaned of the flashing left on the casting from the mold seam. Next post I'll get down to installing some teeth in Kong.