bsplinecurve bspline_3d_np_nc_nr 2 3 0 3 1 1 2 3  0 0 0 1  1 1 1 1  1 0 0 1  0 0 1 1
revsurf rs_bspline_3d_np_nc_nr  bspline_3d_np_nc_nr 0 -1 0 1 0 0
offset rs_bspline_3d_np_nc_nr_of  rs_bspline_3d_np_nc_nr .1
offset rs_bspline_3d_np_nc_nr_of_of rs_bspline_3d_np_nc_nr_of .1
mkface result rs_bspline_3d_np_nc_nr_of_of .3 .5 .3 .5
set MaxFTol 9.9999999999999995e-08
set MaxETol 7.0121431023305125e-07
set MaxVTol 7.0121431023305146e-07