Have you seen the marching cubes implimentation? http://www.vtk.org/Wiki/VTK/Examples/Cxx/Modelling/MarchingCubes -- View this message in context: http://vtk.1045678.n5.nabble.com/Surface-Mesh-of-Equilateral-Triangles-tp5724466p5724478.html Sent from the VTK - Users mailing list archive at Nabble.com.