Hi grandpi, the NURBS surface type of geometry that MOI is based on is primarily focused on making smooth surfaces, not rough surfaces with small local details in them like you show there. So this type of thing is not really a good fit with MoI, other software like 3D Coat or ZBrush is much more suited and focused on that kind of shaping.

> Is there a way to create noise on surface after lofting like this Sketchup plugin ?

No, not really for applying it after lofting. Probably the best thing to try would be what Pilou shows above with Max's plugin for distorting the curves before you do the loft.

- Michael