Beth, I manipulate some figures that I have molds for by cutting at
the joint (elbow, knee, whatever) with a sharp blade and welding them
back together with wax. This keeps things very neat, and avoids
problems you can get with any type of wax trying to get back to its
original shape (aka "memory") when you just bend it. Use a lower-
melting wax to stick them back together, so as not to lose your
details. Try it once.