> BTW, is there any limitation in the number of curves you can use as profiles ? 
 
Nope, you should be able to use as many as you want. 
 
But sometimes it can be a little frustrating if you try to build too much of a giant detailed thing just in one single enormous loft or sweep operation. It tends to be a bit more strategically helpful to do things in more managable pieces. 
 
I mention this because sometimes I see people trying to create something like an entire car with just one loft with a huge number of sections. 
 
    - Michael 
 |