Hi Danny,

> On this note it reminded me if offset could be enhanced so if you have a hole in a
> solid and want it smaller or larger you apply an offset and the surrounding surfaces
> will 'heal' themselves and keep the solid structure, is this possible?

That is something I'm hoping to work on during v4 - there is some functionality for that in the geometry library that MOI uses but it needs some tuning up for how it handles the extensions of trimming boundaries, it's not quite all that reliable in its current state.

- Michael