Good Morning, Colin...

Thanks for the feedback. I encountered three issues when trying to add text to
a curved surface. The depth into the surface; the percentage of chamfer or fillet;
and, following the curve. In green sand casting, all vertical surfaces (z axis) must be
angled (draft) at least 3 degrees from vertical (z). If you try to follow a curve that
has chamfered text, the chamfer degrees will be less than 3 degrees on one side
of the character and more than 3 degrees on the other, relative to vertical (z axis).
I can see this would introduce a huge programming problem, I've not seen solved
in any of the 3D packages I'm familiar with.

Other casting techniques such as lost wax, etc., can accommodate the problem,
but, for green sand casting you almost have to increase your angle of draft and
add the text as the final step in the process.

Regards...Bob