3dprinting is a hot subject right now obviously, but also a very complex and sometimes confusing subject too. There are so many different types of 3d printers out there and so many services that use many different types of standards. Sometimes one way of doing something will work fine for a particular type of service or machine, but not another. I think it's always best to have a supporting software in your toolbox which sole purpose is to eval or test models before printing. Something like Netfabb Cloud is great, but MeshMixer is also quite handy and is of course free. These specialized apps can do things specifically for 3d printing that Maya, 3dsmax or Blender alone wouldn't really be capable of without scripting or add-on functionality.

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