Mini tut :)

 From:  Frenchy Pilou (PILOU)
8388.29 
Loft power! ;)

Rail Revolve
Iso curves
Kill or Hide Rail Revolve + Surface
Loft and deform real time curves as you want (general, by points ...etc)
Here just horizontally :)
Have fun!

EDITED: 23 Nov 2020 by PILOU