circle circle 0 0 0 0 0 1 30
extsurf es_circle circle 0 0 1
offset es_circle_of es_circle 5
offset es_circle_of_of es_circle_of 5
mkface result es_circle_of_of 0 3 0 40
set MaxFTol 9.9999999999999995e-08
set MaxETol 1.4095203923333596e-07
set MaxVTol 1.4095203923333602e-07