Hi Pilou,

> Ps Not possibility to have the Rail Scaling only limited of
> the "upper" half side of the volume?
> (don't want the bottom section follow the Rail Scaling)

Not with a scaling rail - it works by applying a scale transformation on the profiles, which does not easily allow for that kind of a "partial" scale in a general way.

But if I understand you correctly, you can get that kind of a shape by using a 2-rail sweep instead of using a scaling rail.

That would be a profile and rails like this:



Then when you do the sweep, select both of those as sweep rails at the rail selection prompt, instead of picking one as a scaling rail later. With both of those as sweep rails, the profiles will slide along the 2 rails which gives this kind of a result:



- Michael