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.
They should be laying flat, with the single column positioned on its side. There seems to be a bit of confusion on this, so I've updated the models so now they're in the correct printing orientation by default!
I hope this helps! (◠‿◠)