This is an accurate and printable model of the male (lens) side of the Sony E-Mount. It should be a useful starting point for those interested in designing their own camera covers, lens adapters, or entire lenses themselves. This is the result of several iterations of printing and design refinement, and with very minor clean-up post printing (removing any tiny retraction blobs and any small mess under the bayonet overhangs) it should lock on to E-Mount bodies cleanly, smoothly, and securely. I will continue to refine as I discover improvements.