hello
try something like
Extrude {{0, 0, 1}, {0, 0, 0}, Pi/2} {Line{1};}
to create a surface of revolution from spline 1
in addition
Line{9} In Surface{32};
to force the meshing to pass trough the intermediate circle arc
of course adjust the numbers
--
jean pierre aubry
jeanpierre[at]lamachine.fr
33 688 670 795