A later version, presented at MICCAI 2001, also repositioned nodes within the mesh to smooth the cut surface. At this point I discovered how hard 3D meshing really is: when you take a naive approach to flattening the cut surface, you also flatten elements, which have to be removed again by heuristic methods. Two animations from the MICCAI presentation are also available. The first one shows a modest cut in a small object . The second one shows two cuts in larger cube, and clearly demonstrates the lack of realism in linear elasticity.