Hi Pilou,

> The problem is how to "past" at the original curves with the
> fillet and the "join" of upper surface?

I'm sorry, I don't understand - "past" what?

Did you see the model I posted previously? It has an angle in it like you were asking:



Also note there that the Fillet radius I used was pretty large, so that the fillet went a fair distance down the sides.

So for the fillets in my example model were actually this piece here:



- Michael