Hi Pilou,

> I don't use any fillet before apply offset with your
> example file 3dm

In the example file that I downloaded from the above (test_34.3dm), there was already a fillet applied. Did you get a different file?


> But something curious : is it normal that over 3 cm nothing
> works in my example above?

It looks like your example is just an image with no .3dm model file? Could you please post the model file so I can take a look?

- Michael