I want to make and cast a bunch of "skeleton" parts (chests, pelvises, bits of legs, arms, skulls and so on) so I can wire them together at the joints to make armatures for sculpting on (rather than building a contraption from wire every time). If I cast these in resin, does anyone know if I could build directly onto that with Milliput? I would rather not go to the expense of buying all the moulding and casting stuff only to find it won't work.