We're making soap using silicone molds for our studio final, so far I've had one utter failure (I didn't wait for the soap to cool completely and it spilled everywhere) and one sorta failure (My first came out with silicone remnants on it, which I'm told is pretty standard for the first cast). Here's hoping that the third time is the charm. A lovely side effect is that I've been scented cinnamon and rosemary. It's a nice left over. Bit strong though.