This model was made in Morphi app using the free cylinders and the star from the paid shapes pack. www.morphiapp.com. We have included one .STL file with the base and the gears. No support is needed. We printed the base first. Then we switched out the color in our printer and printed the gears in a different color. Here is a video of the final print on our YouTube channel. https://www.youtube.com/watch?v=ysndNsVFolI 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. www.morphiapp.com 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.