xiaomi yi mount for martian 2, this is thought to be printed with flexible filament (tpu)
Has a antivibration system, a needle is needed to mount this, the needle works as the axis fo open and close the door to put the camera inside and extract it easily from the side and stay protected by the tpu.
to secure it closed i recomend using duct tape or something similar.
I elected 22º~23º because its suitable for 20º and 25º (still similar angles) which are the most common agles to fly freestyle.
*this design may need some post adjustments