Hi normanius, I need to use Adam algorithm, could you please guide me how. I use VTK 7.1 Thx -- View this message in context: http://vtk.1045678.n5.nabble.com/vtkBooleanOperationPolyDataFilter-creates-non-manifold-edges-tp5738088p5743665.html Sent from the VTK - Users mailing list archive at Nabble.com.