The more I mess with foam, the more I'm convinced that rigid molds are the way to go. Foam expands way more than featherlite and presents expansion problems that featherlite deoesn't. Conversely, foam yields an indestructable product and with some practice, is very manageable. Cheaper, Too. Spent some time today with casting into Bondo Molds, using Vaseline/mineral spirit as arelease agent and coating the cavity with talc. If the mold is symetical, read NO UNDERCUTS, the lure will pop out, smooth as a baby's rump, mimicking the model perfectly.