Basic shell case for iPhone 6. Tested to fit on real phone. 50 mils thick on all sides, with openings for sleep and volume controls. Blank back so feel free to customize. Comments appreciated.
UPDATE:
v3: Rounded corners for better aesthetics and less pant-snaggin (shown in bronzefill).
v2: Increased width of case by 20 mils. Phone now fits in the case more easily while still remaining snug.
SLDPRT: I've uploaded the SolidWorks file by request. It was made in SolidWorks 2013.

I printed it at 100% scale in PLA on a MendelMax 1.5. It was thin enough such that there were no infill layers generated. Not sure how the case would work if there were an infill layer. It fits great without any cracking. The part was designed in SolidWorks.