Solid Inspector2 is a nice idea, but the very first solid I tried it on returned a message telling me that holes in the mesh cannot be repaired automatically, that I would need to fix the hole first and then run Solid Inspector again. Really??? I thought this is what Solid Inspector was going to help me do in the first place.

My pseudo-solid is a 5 sided beam, one of the simple rectangular sides won't close. I've deleted the offending edges and re-drawn using both pencil and rectangle tools, and of course tried Solid Inspector2. SI2 shows me the offending edges, but can't/won't fix them.