Material: PLA, Infill Octet 50%, around 7 hours printing time for part 1 and 3 together. Mounting: 1. slide part1(red) onto the head of the M365 until it snaps in just behind the handlebars. 2. clip the mobile into part 2(white) 3. slide part2 into part1. Notes: if part 1 and 2 slides to easy, try to print part2 with a + 0.5% scale in width or depth so that it's dovetail gets a little larger (Of course you can use a rubber strap as well or even glue it together). If you have a different mobile you can try to stretch or lengthen the outer vertices. Just take care that the dovetail will maintain it's dimensions. Issues: 1. I made that with blender and part1 seems to be quite perfect. part2 against it, has some thin edges/faces, so that the stl doesn't give a perfect slice and will print some strange lines, but it doesn't matter about the function. Blender is appreciated here, if someone has a clue how to avoid it? :-) 2. As you can see, the Headphone output is somewhat covered..