This model was made in Morphi app using cylinders and a torus. You will need to add support on the very bottom of the model for it to print properly (see printing image above). Print our model or design your own in the app. In Morphi, users of all skill levels can make 3D printable objects on the go using touch, without wifi or a mouse. Download the app for free for iPad and IPad mini on the App Store. https://itunes.apple.com/us/app/morphi/id833530351?mt=8 Coming soon for Android!Copyright 2014-2015, The Inventery, Inc.