Format igs

 From:  Michael Gibson
154.2 In reply to 154.1 
This file has objects in it, but they are set to have the IGES "blanked" flag on them, so they are imported as a hidden object. Click on Edit/Hide to show them. The same thing happens when reading the IGES file into Rhino as well.

It seems to just be wireframe curves of a sphere and cube though, no actual surfaces...

- Michael