DW Gopro session mount with bumper

I did design this first in 2016. It was the best cover i've ever used. Here is my orginal design:
https://grabcad.com/library/3d-printed-flexible-cover-for-gopro-session-1

I uploaded current V5 version here now.
I use flexi material for this. I don't know anything about printer settings. My designs are always printed by my bro :)