Hi Burr, stuff in MoI is set up to automatically adapt to different directions on curves and such, so it shouldn't normally be necessary to do any kind of manual flipping. This happened to be a case that was not doing it properly but it is fixed up now for v2.

I would still like to add in a function to reverse things at some point because it can be useful to know and flip which direction will be the "outside normal" direction for surfaces that are exported to a polygon mesh file. If you have a closed solid then normals will automatically be oriented outwards, but that won't happen for just surfaces instead of solids.

But that really needs a bit more UI for the "flip" command, because you need to not just be able to flip but also to see what the normal direction is currently.

- Michael