This is a mold for making Dunnies. You'll need to cast in a flexible material if you want to remove the resulting cast from the mold without destroying it. I used Oogoo, you can find the recipe for Oogoo here: http://www.instructables.com/id/How-To-Make-Your-Own-Sugru-Substitute/ Oogoo sets in less than 10 minutes so printing molds is a great way to build an army fast :). Have fun.