Hi all. A friend and I were discussing possibilities and we were wondering if anyone had ever tried printing a 3D model with a custom shaped insert. We're printing in translucent UV sensitive resin on a Photon S. What we were thinking was having a 'blood diamond' in red resin, but we'd like to have a hollow inside of it shaped like a skull, so that you can rotate the model around and see the cavity. Does anyone know if this is possible and/or who might be making such models?