@BurrMan - again, thank you for your time.

I completely get what you mean by "For this, we need to adjust the actual geometry of the font/letters and then determine what you want to call "depth"."
So if I were to use Moi3d, choose the Bookman Old Style font from 'Draw Solid', and I use say a 20 degree V bit, how would I go about creating the geometry?

Also, "But anyway, an easy way to achieve the centerline path,"
Could you please explain how to create a centerline path from text in Moi3d?

Thank you!
Gunter