I'm fairly new to casting resins i normally stick to metal but have decided to give some water clear figures a go. I'm using water clear polyester resin along with additional cure rtv silicone moulds. the problem I'm having is that although the moulds are perfect the resin is drying with a wrinkled surface, i have tried different ratios of catalyst and different tempratures with no luck :-/ has anybody had the same trouble and found a solution?