Helper Snap-off Disks - Prevent Corner Warping

Helper Discs – see attached help and file – keep corners from warping and peeling off early – add to corners of your 3D object, snap off easily after printing:
* [Makerbot - Keep Corners Flat With MakerWares Helper Disks - 19Apr2013](http://www.makerbot.com/blog/2013/04/19/keep-corners-flat-with-makerwares-helper-discs)
* [Makerbot - 12 Ways to Fight Warping and Curling - 23Jun2011](http://www.makerbot.com/blog/2011/06/23/12-ways-to-fight-warping-and-curling)
* [Tinkercad - 3D Print - Helper