Hey, I'm a researcher doing biomedical research and I have a bunch of .stl files of scans of body parts (nasal passage). I was wondering if there was any way to use a mesh surface for making a mold. I'm hoping to have something that fits perfectly around these body parts, and being able to in solidworks make a negative of a small portion is all I need. Anyone know how to take a .stl scan carve the shape out of a block?