Thanks a lot! Figuring out how exactly to do this in Java took me a while but now the loading times for my biggest mesh has gone down from 2 minutes to 4 seconds. -- View this message in context: http://vtk.1045678.n5.nabble.com/Speed-up-cell-allocation-tp5733208p5733267.html Sent from the VTK - Users mailing list archive at Nabble.com.