I printed the original iPhone 5 Eyepiece Mount (http://www.thingiverse.com/thing:39308) and found that the eyepiece holder only fit one of my eyepieces thus limiting my selection. I decided to modify it by splitting it to allow it to expand or contract a small amount to accomodate some of the other eypieces I wanted to use. There is a hole for a screw, or you could use a rubberband or plastic clamp as shown which works well. After trying it a few times I found that it gave better results when the eyepiece was further away from the iphone camera lens so I went back and made a taller version to allow more space. This allowed a full frame picture capture on my iphone 5. You can just down load the original file and delete the eyepiec holder in your slicer or just add this one in addition.