I'm only a newbie to MoI and 3D printing. :)

But I am finding I have less problems if I export to STL and check for "holes" in meshlabs has I create the model.
i.e after using merge to cut a solid in half, I will export to STL and test in meshlabs for holes. I have found a few times that MoI will report a object has solid but meshlabs will report a hole, most often along a edge where the solid was cut. I also find exporting to STL and testing for holes helps when trying to figure out why a bunch of surfaces will not join into a solid.


Cheers, steve