the only detail is that you can't put it inside Moi :)

After you project the letter curves, if you trim your original surface with them, you can extrude the new letter surfaces using *Set dir* , *Cap ends* and *Both sides*
to create a cutter that will boolean out from the original object at a consistent depth, while following the contour of the surface.

Excellent! I hope these kind of tips find their way into the MoI documentation :)

Ed