Hi Rico,

> Oh dear.
> While the fillet works fine (with rebuild of joined curves and 2-rail sweeps, yay) now the fillet operation
> has decided to do an unwanted "cleanup" of the rest of the surface.

It's built into filleting that it tries to remove "topological edges" from the model if possible, which means it will try to merge 2 coplanar plane fragments into a larger plane.

In MoI v4 I can see about disabling that but for now there isn't any way to turn that off, sorry.

- Michael

>To do that, set up a shortcut key with this as the command part:
>SaveAs c:\test.obj

Superb tip.. thank you Micheal

>It's built into filleting that it tries to remove "topological edges" [SNIP]
>In MoI v4 I can see about disabling that but for now there isn't any way to turn that off, sorry.

Ahh it's good to know I'm not just going mad and seeing things. (joking aside, was just wondering if I was missing an option)
Thank you again