You will need:
- blue dish-soap (any brand seems to work)
- 100% Silicone (do not buy quick set silicone, you need 100% silicone)
- caulking gun
- something you want to make a mold of.
- masking tape - to patch holes in your positive, if necessary.
Step 1: Make your catalyzing solution.
This is by no means an exact science, I use blue dish soap because it allows me to see how much I have added to a water bath, I approximate that I used 4 oz. of soap in 64 oz. of water.
Step 2: Catalyzing the silicone.
I use the whole tube usually.
Step 3: Preparing the silicone.
When it begins to become a bit less malleable, and stiffen, it is time to sink your positive into your material. In this case, Mike helped me, and we used his dinosaur, Jesus. (hay-zoos)