In this video, I show how to make a simple 2-part cavity mold using the Boolean Mesh Operation function in Geomagic Design X Pro.
We start with a single scan of a toy and then create 2 solid bodies that will become 2 solid blocks.
From there we convert the solids into meshes and perform the Boolean operations of cutting each of the block meshes from the tool body mesh (the single-part scan).
This leaves 2 mesh cavities that could be machined or 3D printed for casting purposes.