@PA...well spotted Must resist the oven!! Must resist the oven. Must re.... I wonder what temp to set the oven at that wouldnt warp the plastic... ARRRGGGHHHHHH!!!!
As I've only been using it on small areas, I've been doing it before I go out to work in the morning that way it's dry and ready when I get back. But I have painted over it after about four hours and that was fine.