Sorry Martin, I forgot to add an answer on this last question; if you have resin that's still not cured after 24hrs and you would like to know if there's a problem then we'll need a little more information on what resin you're using and what your cure environment is like. You mention a 100:30 mix ratio so you're most likely to be using our EL2 laminating epoxy or IN2 infusion epoxy but we also have a choice of hardener speeds on those systems too. Please confirm what resin and hardener you're using and also what the ambient cure temperature is (for the whole cure time) and I'll let you know if you have a problem.