No.The cut formation is anomalous .In other words I draw an anomalous curve on the screen ,then I extrude this curve to get a tubal object. -- View this message in context: http://vtk.1045678.n5.nabble.com/Cut-volume-with-freehand-curve-tp5600009p5602442.html Sent from the VTK - Users mailing list archive at Nabble.com.