Yes

I FOUND THIS IDEA ALONE, THIS IS A NEW WAY OF MAKING STENCILS.

In 2014 I had to make the chinese character "HAO" stencil for an artist in Toulouse. When modeling the object I thought about making the bridges in 3 dimensions instead of the normal flat way, to avoid marks of those bars... And it works perfectly !

"3D Bridges" are easy to make yourself if you know a CAD software, but if you need a complex stencil, and don't know how to do it, please ask me ! (you need a 3D-printer to do this)