Thanks fredron. I use nonstick backing pans to put my excess wax in and haven't had issues getting the wax out yet, but then again they aren't small in size like a muffin mold. Cool, so i'll make the tarts with my pillar/votive wax and it'll require a repour since the wax does... 2 piece mold, i've read a lot about clamshell molds, is that what you are talking about? sorry so long in responding...reading other threads and overlooked my own.