Hi Andrei,

> Very complicated, I think it's very low level for me.

As I've mentioned many times before, really if you want to do direct surface point modification a sub-d modeling toolset tends to be a better fit for that than NURBS modeling.

Some of the things that give accuracy to NURBS modeling do not lend themselves well to squishing surfaces around. Some problems like internal segmentation on circles/arcs/spheres can be avoided though by doing a rebuild on it.

- Michael