Hi Gunter,

Since this is for 3D printing you are almost certainly better off using a different type of software like ZBrush. Here's a tutorial on filigree.

https://www.youtube.com/watch?v=n6TVd7vZSII

Making filigree in MoI, or any other NURBS CAD software, would be quite challenging and time consuming. The only reason I can imagine doing that would be if the part needed to be milled.

- Peer