Hi Pilou,

> After 3cm ??? Offset seems not works!

Yeah, it looks related to the same problem, it is having a problem with the corner patch.

If you delete the small rounded corner patch, you can then go above 3cm.

That is interesting that it works when you scale the object down by 10 times though.

Same advice as before though - it works better to apply the offset to the plain box, and then apply fillets to everything after offsetting has been done, rather than filleting before.

- Michael