Hi Pilou,

re:
> Of course yes...it was for the concept! :)

Ok, but this discussion thread is about this specific model.


> else does it normal that a volume "subdivided" even with a low subdivision
> can't be filleted ?

It's normal that you can't place an edge fillet along an edge that is already smooth between the 2 surfaces that it belongs to.

That control is not for controlling the amount of subdivision, it's for controlling a weighting effect. In a case like you show there with a value of 6 the surfaces are still smooth where they meet, their curvature is just more tightly bunched into a smaller area. If you zoom in closely on a corner or an edge you should see that it still has a rounded shape there (with a kind of bump and valley), just contained in a much smaller area.

You can only apply fillets to areas of a model that are sharp, not on edges that are already smooth.

Here's what you should see if you zoom in on your object:





- Michael