I was wondering if any one could give me some pointers on an issue I'm having. I made some new molds yesterday, and did a test casting, under pressure. But when I went to demold them, I noticed the resin had leaked from the bottom of the molds. I made sure the two halves of the molds were tightly held together by pieces of foam board and rubber band. But I don't get how the resin could still leak through. I'm using Smooth Cast 326. It has about a 10 minute pot life, and 60 minutes before demolding. Anyways, I've had this issue before. So I was wondering if there is something I'm over looking? I can show pics of my molds if it helps. Any help is appreciated.