I modified user Torsten's awesome desk stand for the iPhone 5 and incorporated my iPhone 6 Cradle instead while still maintaining the holes for the lightning cable!
The cradle is a perfect snug fit for an iPhone 6 without a case. It slides in and out with ease while remaining flush inside the cradle.
Print with the settings of your choice.
I used MakerBot Desktop's PLA Low Resolution settings with...
+I had to remove a piece from the very front of the original design that was obstructing the iPhone 6
+I re-aligned the iPhone 6 holder so it aligns much better with the lightning cable