Mokka DIY - Central Air Vents Phone Support - iPhone 7

Due to the fact that I recently change car, and to the fact that I bought a Opel / Vauxhall Mokka without the integrated Navi system ( No money, no Honey... ), I had to solve the problem of how to install my iPhone on the Dashboard for use it as Navi. The phone had to be placed in a quite accesiible position, and without modifications to the dashboard ( I could have used a suction cup support installed the windshield, but... If that, what is the point to have a 3D printer??? ). So I start think about the "clip" system, using some edges present on the central air vents of the car. This is my first functioning prototype... now, few days of road test, and I will share the stl files updated with the last improvements. Update of 05/08/2018 Seems to be everything ok, the support is holding correctly the phone, so I release the STL files! Any critic/comment will be appreciated! Hope you enjoy!