Mold Making Part 4 - The Finished Mold
Fill it as high as you can. A thick wall is better and will make your mold last longer Vibrate it if you can and pop any bubbles that rise to the surface. Allow the rubber to cure at least 16 hours. I usually go 20 hours.
If you did it right and the spray worked, you should be able to find the parting line. Don't worry if it does not fall right apart at the line. The rubber may take a bit of work to separate but once you get it started it will separate.
To the right is my final product, a reproduction of a 1960's James Bond toy. The hair and shirt are painted. The body was molded separately in black.