Started with this design :http://www.thingiverse.com/thing:563347 and altered is to fit exactly on a iPhone 5. Changed the way the iphone doesn't fall out the bottom (deleted the ridge and made use of the curves of the iPhone). This way you can still use all holes in the bottom for earpieces and charging. furthermore I improved on roundness. Boltholes: 4 x 3.1 mm for use with M3 screws. Countersunc holes: 6mm diameter. Holes plasement (center to center) 30mm x x38mmI printed it horizontally to make best use of the strength of the PLA. support structure is then used for getting the cradle print nice, but with KISSlicer this is an easy job.