MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Yes, if you start looking at layers about 2 or 3mm up from the bottom, you should be able to identify the outer ring in the cross section. As you then move down layer by layer, at some point, the outer ring will disappear, and then in the next layer, you'll start seeing the cross section of the base beneath the ring. If the gap is there, you may be printing a little too hot or too slowly such that the outer ring still completely fuses to the base, even with the gap.