bsplinecurve bspline_3d_np_c_r 2 3 0 3 1 1 2 3  0 0 0 2  1 1 1 1  1 0 0 1  0 0 0 2
revsurf rs_bspline_3d_np_c_r  bspline_3d_np_c_r -1 0 0 0 1 0
offset rs_bspline_3d_np_c_r_of  rs_bspline_3d_np_c_r -.1
mkface result rs_bspline_3d_np_c_r_of .3 .5 .3 .5
set MaxFTol 9.9999999999999995e-08
set MaxETol 5.1520306848770894e-07
set MaxVTol 5.1520306848770915e-07