bsplinecurve bspline_3d_np_nc_r 2 3 0 3 1 1 2 3  0 0 0 2  1 1 1 1  1 0 0 1  0 0 1 2
revsurf rs_bspline_3d_np_nc_r  bspline_3d_np_nc_r 0 -1 0 1 0 0
offset rs_bspline_3d_np_nc_r_of  rs_bspline_3d_np_nc_r .1
offset rs_bspline_3d_np_nc_r_of_of rs_bspline_3d_np_nc_r_of .1
mkface result rs_bspline_3d_np_nc_r_of_of .3 .5 .3 .5
set MaxFTol 9.9999999999999995e-08
set MaxETol 5.4993597970838836e-07
set MaxVTol 5.4993597970838857e-07