HGLRC Petrel85 Mounting Insert

I wanted to mount the Mobula8 Mounting Bracket for the O3 on the Petrel frame.

These should be printed in TPU in order to be penetrated by self tapping screws (M1.4/12mm). This also should add a little bit of softmounting. I also raised the bracket with m2 rubber standoffs (next time building I'll add washers underneath them as well so they can't push trough).

It's intended for cinematic flying, not freestyle.