Hello, my problem is, that after deleting vertices or faces using garbage collection, the indices aren't consistent to the indices before the deleting process any more. For example: we have 3 vertices: 0,1,2 we delete vertex 0 using garbage collection and we have vertices labled: 0, 1 and the vertex labled with 0 belongs to the vertex labled with 2 before deleting. A consistent numbering for me would be: 1,2 Is there any way to have a consistent numbering after deleting using garbage collection ? best regards, Marcel -- Dipl.-Math. Marcel Makowski Institut für Geometrie und Praktische Mathematik RWTH-Aachen Templergraben 55 D-52056 Aachen, Germany email: makowski@igpm.rwth-aachen.de Phone: +49-241-80-97066 Fax: +49-241-80-92317 URL: http://www.igpm.rwth-aachen.de