Hi Mauro, those look good! Yes it is possible to do surface control point manipulation in Moi, but it's a somewhat different process than a brush stroke based type mechanism, and it only works in certain situations like when you have set up a single base surface.

It's not easy to try and do that style of deformation on a solid made up of many separate joined surfaces like you will get when you do any booleans, and using booleans tends to be a very common method of building objects in MoI...

Usually the difficulty with surface control point manipulation for NURBS surface is that you can't add in just a single isolated point in a surface, NURBS surfaces are rectangular in nature and so if you want to add in points you have to add in an entire row or column of points, not just a single one. That's why sub-d modeling is usually better suited for organic shape modeling instead, since it is not as restricted in the point layout.

- Michael