Hi Pilou,

re:
> Acis works but only one by one...does this normal ?

It will work if you select all the edges coming off that central point instead of only some of them.

With a mix of some edges not being filleted combined with mixed convexity that might be a difficult corner configuration.

So that might be normal I'm not entirely sure. I have observed other situations where doing some fillets individually can succeed in ACIS but I don't know yet if this is a limitation of ACIS or if it's caused by something I'm doing when transferring geometry over to it.

Thanks,
- Michael