Making a Negative Alginate Mold:
You'll either be making a temporary mold of the fangs with alginate, or a permanent one with silicone that you can use multiple times. First I'll show you the one with alginate.





Taking 2oz of alginate and 2oz of water mix up a small batch. Overfill the dental try you've already used. Now carefully, slowly and not too tightly, place the plaster molds with the sculpted teeth into the alginate, down to and including part of the gums. After it sets up, pull the cured alginate filled tray off of the plaster cast. Clean the clay off of the cast and brush some dental foil separator onto those teeth that are now exposed clean. Let it dry a few minutes.