Mathematical models
It's a problem that many of us have faced - how do I represent the four-dimensional analog of the dodecahedron in three dimensional space in a way that my students and visitors can understand?
Actually, for most of us, it's not a problem -but for anyone that does need to accurately represent complex polyhedral structures, we can help. All we need from you is the three dimensional coordinates of the nodes in a structure, and we can construct the model from there.