Hi Olga,

> I need at least 2 point thickness (millimeters)

Yeh, 2mm thickness seems extreme for shelling considering the size and shapes involved with this piece.
I gave it a go in another app that is very strong in shelling and the best I could get was 0.5mm,
so what you are asking for is like a type of rough shelling/coring out operation, I think that would be a tough one.
In this situation you could try to hollow the back and reduce the weight by boolean difference with a combo of different shaped solids.



Cheers