Maybe this has been asked before but I'm looking to smooth over lines that have been premolded into a figure but I'm not sure what to use. I saw molding clay and molding putty at the store but the clay requires you to bake it to get hard and I doubt the figure would stand up to that. The putty says it's easy to mold but will never harden which would suck when you handle or transform the figure. So which one should I use if either, and if neither should be used, what should be? Thanks.