Quote Originally Posted by shipahoy41 View Post
To seal a plaster of Paris mold I use elmer's white glue mixed with water. Use an artist paint brush to brush it on.
you are right ship they do use Elmer's glue to seal plaster Paris sorry for my misunderstanding in the first place we A little bit of information to post here we just bought a oven for firing clay so we will give a shot at making hand poured molds in the future.