GoPro Hero Session ND-Filter Frame

Everyone who searched for a ND-Filter for the GoPro Hero Session (4 or 5) knows that finding a good quality but not exorbitant expensive Filter or Filter Frame is basically imposible.
Therefore I made my own frame for a basic glass ND-Filter I found on the FPV Section of the Internet. It just clips onto the Hero Sessions Frame.

DO NOT glue the Filter glass in place!! When you put the Filter Frame on the GoPro Frame it slightly warps. If the Glass is glued into the Frame you warp it too, and risk braking it!
The Frame is designed to fit the Filter Glass tight, in some cases you even have to scrape away some material.

ND-Filter used:
Team BlackSheep Glass ND-Filter ND4
https://www.team-blacksheep.com/products/prod:ndfilter_nd4

short Thumbscrew:
https://www.thingiverse.com/thing:3843319