12 sided
thingiverse
A personalized rendition of http://www.thingiverse.com/thing:40703 was produced using the Customizer (http://www.thingiverse.com/apps/customizer/run?thing_id=40703). For specifications, use pattern thickness of 2, an overlap of 86%, radius of 7, rotation at 0 degrees, iPhone version 2, build plate selector set to 0, and choose pattern shape 12. Case thickness should be 2.4.
Download Model from thingiverse
With this file you will be able to print 12 sided with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 12 sided.