How to make a 2 part mold

If you want to make a bunch of something but you only have one this tutorial on how to make a mold with just two ingredients may be just the technique for you. I have made push molds (one sided) bu tI have not tried to make a full 3-d mold yet. This tutorial on how to make a 3-d mold with just 2 ingredients featured at the blog A Crafty Mix looks like the one I am going to try.