Hi Pilou,

> Sorry i don't understand how the mirror can help for the angle wanted?

Well, probably the technique I show above that uses Sweep to build the sides is better anyway. That technique is easily adjustable by just changing the shape of a few of those curves to make the sides more angled, more rounded, less rounded, etc...


But for mirroring it's just that if you have a piece like this that comes to a straight side:



If you mirror it you will then have the overall shape with the angle that you want:




Just boolean or trim away the excess part and that leaves you with this:



- Michael