Okay, I did a really stupid thing today. I'm making heart candles using feather palm wax and 2-piece plastic molds. This particular wax was suppose to be pillar but I think I got container. So, I've been putting stearic in the wax so it will come out of the molds. Been doing this for a year. Today, my brain went south, and I forgot to put the stearic in. Now I have two heart molds with wax stuck in them. Any suggestions how to get the wax out without ruining the plastic molds. If it was a metal mold, I could put it in a pot on the stove and melt the wax out. But this is plastic, and the opening is really small. Too small to dig out with a knife. Any suggestions would be appreciated. I only have two molds and Valentine's Day is coming up.