Array nI have tried your suggestion (vertex at tip of tool) and it works but I would like to shown the deformation for example along the edge of tool. I think your suggestion rather describe the buckling of the tool. Please correct me if I'm wrong. nnTo be honest, I have tried your second idea of coordinate system topic. But in one case the simulate cannat solve, other case I cannot use those coordinate system which are created by joint to get the right deformations.nnThanks again! n