Hi mdesign,

re:
> Thanks a lot for your reply. Do you know any more affordable kernels which could be worth to look?

The only one I know of is C3D but since that is from a Russian company it's probably not going to be feasible to use it for the time being at least. I was just about ready to spend some time doing a thorough investigation of it when the war started.


> What do you think about Open Cascade kernel (FreeCAD)?

I've looked at it a few times, it's generally not at the same level as the commercial kernels.


> Could it bring a bit better fillets/ offsets/ shelling or it`s not worth to check?

Maybe in some cases. There will be a large amount of work involved in incorporating an additional kernel though.


> I mean as addition to existing one. Something like that:
> https://discourse.mcneel.com/t/scripting-freecad-from-rhino-filletedge-case/135784
>
> If it is worth to do it inside Rhino maybe it`s worth to have it inside MoI3d.

I think that's about a n-sided patch surface filling mechanism which is a newer thing that's been developed in Open Cascade. So it could very well be in better shape than other things.

- Michael