pbsplinecurve bspline_3d_p_r 2 4 0 1 1 1 2 1 3 1  0 0 0 2  1 2 0 1  2 0 0 1
extsurf es_bspline_3d_p_r  bspline_3d_p_r 0 0 1
offset es_bspline_3d_p_r_of es_bspline_3d_p_r 1
mkface result es_bspline_3d_p_r_of 0 1 0 3
set MaxFTol 9.9999999999999995e-08
set MaxETol 2.1334895038963668e-07
set MaxVTol 2.1334895038963673e-07